identifier	taxonID	type	CVterm	format	language	title	description	additionalInformationURL	UsageTerms	rights	Owner	contributor	creator	bibliographicCitation
039BD60BFF9A3F187AE1FA77FC206028.text	039BD60BFF9A3F187AE1FA77FC206028.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Munidion radagasti Williams & Boyko & Zheng 2026	<div><p>Munidion radagasti sp. nov.</p><p>(Figs. 1–3)</p><p>Type material: New Zealand: Holotype, mature female (10.3 mm; NIWA 176421), mature male allotype (3.9 mm; NIWA 176422), infesting left branchial chamber of female Curtonida endeavourae (Ahyong &amp; Poore, 2004) (15.6 mm CL), <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=178.4292&amp;materialsCitation.latitude=-35.3335" title="Search Plazi for locations around (long 178.4292/lat -35.3335)">Stn. TAN1104/39, seamount west of Rumble II West</a>, 35.3335°S, 178.4292°E, 1520 m, coll. NIWA, 8 Mar 2011 (NIWA 72417).</p><p>Type host: Curtonida endeavourae (Ahyong &amp; Poore, 2004) .</p><p>Description: Holotype mature female (NIWA 176421): Body (Figs. 1, 2A) ovate, segments distinct, body asymmetrical, sinistral (~ 5°); total length 10.3 mm, maximal width (across pereomere 3) 2.3 mm. Head subovate (Figs. 1, 2A), length 2.2 mm, width 3.4 mm, convex anteriorly and posteriorly, not fused with first pereomere, dorsal surface smooth. Frontal lamina broad, extended laterally (Figs. 1, 2A), eyes absent. Pereon of seven pereomeres, broadest across pereomere 3, tapering anteriorly and posteriorly (Figs. 1, 2A); pereomere 1 surrounding head, posterior borders of pereomeres 4–7 progressively more convex. Large smooth coxal plates on both sides of all pereomeres; dorsolateral bosses and tergal projections on all pereomeres.</p><p>Antennules of three articles each (Fig. 2B); basal article subquadrate, spinous scales at distal margin; second article cylindrical, few setae distally; terminal article rounded, tuft of five short and simple setae distally.</p><p>Antennae of four articles each (Fig. 2C); basal article ovate, bilobed; second article cylindrical, third article subquadrate, fourth article tapered, appears encased in unshed exoskeleton (likely with setae internally).</p><p>Barbula (Fig. 2D) with slightly curved lanceolate projections on each side, outer ones much longer than inner ones; middle region smooth.</p><p>Maxillipeds (Fig. 2E) each with broad anterior lobe with non-articulated palp bearing two small setae; posterior lobe with small, rounded spur.</p><p>Pereopods (Fig. 2F, G) of nearly equal size (Fig. 2F, G); dactylus curved, propodus ovate with small socket for dactylus insertion, carpus subquadrate (fused to propodus or indistinctly separated on pereopod 1), merus subtriangular, ischium stout on anterior pairs, elongate on posterior pairs, basis broadly ovate.</p><p>Marsupium closed; five pairs of smooth oostegites (Fig. 1B). Oostegite 1 anterior lobe subovate, posterior lobe triangular with acute projection extending far beyond posterior margin, internal ridge weakly tuberculate (Fig. 2H, I).</p><p>Pleon length 2.6 mm, of six distinct pleomeres (Figs. 1A, 2A), slightly narrower than pereon. Pleomeres 1–5 with uniramous rounded, smooth lateral plates and similarly sized biramous, smooth ovate pleopods, posterior ones more sharply pointed (Figs. 1B, 2A, J). Pleotelson (Fig. 1A, J) with pair of triangular, smooth biramous uropods.</p><p>Allotype male: (NIWA 176422): Body (Fig. 3A, B) elongate, unpigmented, total length 3.9 mm, maximal width (across pereomere 2) 1.6 mm. Head subovate, distinct from but narrower than pereomere 1 (Fig. 3A), length 0.65 mm, width 0.86 mm, anterior margin broadly rounded, posterior margin triangular and extending far into pereomere 1 (Fig. 3A), eyes absent; cephalic slits present.</p><p>Antennules of three articles each, extending beyond margin of head; all articles with few distolateral setae; terminal articles each with tuft of setae (Fig. 3D).</p><p>Antennae of five articles each, extending beyond margin of head; all articles with few distolateral setae; terminal articles each with tuft of setae (Fig. 3D).</p><p>Maxillipeds (Fig. 3C) each of single, oblong article, sharply pointed distally.</p><p>Pereomeres (Fig. 3A) broadest across pereomere 2, tapering anteriorly and posteriorly; pereomere 1 partly surrounding head; 1–3, 7 laterally rounded, 4–6 laterally squared off; lateral margins of pereomeres 1, 2 directed anteriorly, 3–5 laterally, 6, 7 posteriorly; midventral tubercles present on all pereomeres (Fig. 3B).</p><p>Pereopods 1–7 similar in size; dactylus curved (progressively smaller in size on posterior pereopods), propodus ovate, without socket, carpus/merus fused, subquadrate, with stout setae at distal tip, ischium subovate, basis subovate (Fig. 3E, F).</p><p>Pleon length 1.2 mm, of four distinct pleomeres (pleomeres 4–6 fused) (Fig. 3A, B), pleomere 1 narrower than pereomere 7, segments narrowing abruptly posteriorly with 4–6 cylindrical and bifurcated distally; pleopods, midventral tubercles, and uropods absent.</p><p>Distribution: Known only from the type locality in New Zealand, 35.3335°S, 178.4292°E, 1520 m (see Fig. 19).</p><p>Etymology: Named after the frontal lamina lateral extensions on the head of the female that are reminiscent of Radagast’s hat with its extended ear flaps. Radagast the Brown is a wizard who appears briefly in J.R.R. Tolkien’s The Lord of the Rings and other works, but who has a much more substantive role, memorably played by Sylvester McCoy, in the Peter Jackson Hobbit films which were primarily filmed in New Zealand. Radagast has a close association with the natural world and is known for his love animals and plants.</p><p>Remarks: The female and male of the new species are most similar to those of Munidion laterale Richardson, 1910, found infesting a “galatheid” (fam., gen. et sp. indet.) from the Philippines (Richardson, 1910) and a specimen of Munida scabra Henderson, 1885 (= Paramunida scabra (Henderson, 1995)) from Indonesia (Bourdon, 1972a). Munidion radagasti sp. nov. can be distinguished from M. laterale by the following characters (those of M. laterale in parentheses): female with barbula bearing two small lateral lobes, median region smooth (barbula bearing two large lateral lobes, median region digitate), female with weakly inflated lateral margin of posterior lobe of maxilliped, inner ridge with wide area of few tubercles (strongly inflated lateral margin of posterior lobe of maxilliped, inner ridge with small area of few tubercles), female with tapered subacute endopods of pleopods (female with tapered rounded endopods of pleopods), male with antennae of five articles (male with antennae of four articles), male without midventral tubercles on pleon (male with midventral tubercles on pleon). This is the eighth species described in Munidion, the fourth from the Pacific Ocean, and the second from the Indo-West Pacific. It is also the first bopyrid described infesting Curtonida endeavourae .</p></div>	https://treatment.plazi.org/id/039BD60BFF9A3F187AE1FA77FC206028	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		MagnoliaPress via Plazi	Williams, Jason D.;Boyko, Christopher B.;Zheng, Justin	Williams, Jason D., Boyko, Christopher B., Zheng, Justin (2026): A new genus and four new species of parasitic isopods (Isopoda: Epicaridea) from deep water squat lobster hosts (Decapoda: Anomura) off New Zealand. Zootaxa 5777 (1): 61-90, DOI: 10.11646/zootaxa.5777.1.3, URL: https://doi.org/10.11646/zootaxa.5777.1.3
039BD60BFF9E3F1A7AE1FE49FDDB60C4.text	039BD60BFF9E3F1A7AE1FE49FDDB60C4.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Pseudione apoisos Williams & Boyko & Zheng 2026	<div><p>Pseudione apoisos sp. nov.</p><p>(Figs. 4, 5)</p><p>Type material: New Zealand: Holotype, ovigerous female (6.9 mm; NIWA 176423), mature male allotype (2.5 mm; NIWA 176424), infesting left branchial chamber of female Curtonida isos (Ahyong &amp; Poore, 2004) (9.9 mm CL), <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=164.947&amp;materialsCitation.latitude=-48.532" title="Search Plazi for locations around (long 164.947/lat -48.532)">Stn. TAN0803/19, Seamount 1, Macquarie Ridge</a>, Snares Island, 48°31'55.2"S, 164°56'49.2"E, 1060–1112 m, coll. NIWA, 30 Mar 2008 (NIWA 39597).</p><p>Type host: Curtonida isos (Ahyong &amp; Poore, 2004) .</p><p>Description: Holotype ovigerous female (NIWA 176423): Body (Fig. 4A) ovate, segments distinct, body asymmetrical, sinistral (~ 10°); total length 7.0 mm, maximal width (across pereomere 3) 4.3 mm. Head subovate, weakly bilobed on dorsal surface (Fig. 4A), length 1.5 mm, width 2.1 mm, convex anteriorly and posteriorly, not fused with first pereomere, dorsal surface smooth. Frontal lamina thin, slightly sinuous (Fig. 4A), eyes absent. Pereon of seven pereomeres, tapering anteriorly and posteriorly (Fig. 4A). Small digitate coxal plates on sides of all pereomeres; dorsolateral bosses and tergal projections on pereomeres 1–4.</p><p>Antennules of three articles each (Fig. 4B), slightly extending beyond anterior margin of head; basal article ovate, few setae anterolaterally; second article subquadrate, few setae distally; terminal article rounded, tuft of four short setae distally; articles 1 and 2 each approximately twice as wide as following article.</p><p>Antennae of four articles each (Fig. 4B); basal article oblong, second article rounded, third article subquadrate, fourth article rounded; articles 1–3 each approximately twice as wide as following article.</p><p>Barbula (Fig. 4F) with two curved lateral projections on each side; middle region smooth except for small lobe adjacent to lateral projections.</p><p>Maxillipeds (Fig. 4E) each of broad anterior lobe, distinctly separated palp fringed with setae; posterior lobe with small, rounded spur.</p><p>Pereopods similar in structure (Fig. 4G, H), pereopod 1 largest, others slightly decreasing in size posteriorly; each pereopod with all segments distinct, dactylus curved, propodus subrectangular with large socket for dactylus insertion, carpus subquadrate, merus subtriangular, ischium elongate, basis broadly subquadrate; all segments with spinous scales, propodus with setae and scales on socket surface, carpus with setae at distal tip.</p><p>Marsupium of five pairs of smooth oostegites. Oostegite 1 (Fig. 4C, D) with anterior lobe subovate, posterior lobe subquadrate, nearly as broad as anterior lobe, with weakly produced extension setose along margin, internal ridge smooth.</p><p>Pleon length 2.3 mm, of six distinct pleomeres (Fig. 4A, I, J). Pleomeres 1–5 with uniramous rounded, smooth lateral plates and biramous, digitiform pleopods (Fig. 4A, I, J); exopods conical, directed laterally, tuberculate only at base; endopods slender, directed ventrally, tapered (Fig. 4I, J); lateral plates and pleopods smaller posteriorly. Pleotelson (Fig. 4A) with pair of distally rounded, elongate uniramous uropods.</p><p>Allotype male: (NIWA 176424): Body (Fig. 5A, B) compact, ovate, unpigmented, all segments distinct, total length 2.8 mm, maximal width (across pereomeres 3, 4) 1.4 mm. Head ovate, distinct from pereomere 1 (Fig. 5A), length 0.5 mm, width 0.8 mm, anterior margin broadly rounded (Fig. 5B), eyes absent.</p><p>Antennules of three articles each; all articles with few distolateral setae (three on each of two proximal articles); terminal articles each with tuft of approximately nine setae (Fig. 5C).</p><p>Antennae of four articles each, extending beyond margin of head; basal articles each with two distolateral setae, penultimate articles each with six or seven setae; terminal articles each with tuft of approximately five setae (Fig. 5C).</p><p>Maxillipeds each of two articles, with terminal setae (Fig. 5E).</p><p>Pereomeres (Fig. 5A, B) broadest across pereomeres 3 and 4, tapering anteriorly and posteriorly, laterally rounded; lateral margins of pereomeres 1, 2 directed anteriorly, 3, 4 laterally, 5–7 posteriorly; midventral tubercles absent.</p><p>Pereopods 1–7 similar in size and morphology (Fig. 5B–D); all segments distinct, dactylus curved, propodus ovate with small socket for dactylus insertion, carpus and merus subquadrate, ischium subovate, basis subrectangular; propodus, carpus and merus with spinous scales, propodus with spinous scales on socket, carpus with setae at distal tip (Fig. 5C, D).</p><p>Pleon length 0.6 mm, of six distinct pleomeres (Fig. 5A, B), pleomere 1 slightly narrower than pereomere 7, segments narrowing abruptly posteriorly; five pairs of uniramous pleopods; midventral tubercles absent. Pleotelson with distoventral tufts of setae (Fig. 5F); uropods absent.</p><p>Distribution: Known only from the type locality in New Zealand, 48°31'55.2"S, 164°56'49.2"E, 1060–1112 m (see Fig. 19).</p><p>Etymology: The species name is a combination of the Greek apó (ἀπό; from) and isos (ἴσος; equal or same) to reflect the name of the type host ( Curtonida isos).</p><p>Remarks: The female and male of the new species are similar to those of Pseudione chiesai Pereira, Doti &amp; Roccatagliata, 2021, found infesting a specimen of Munida spinosa Henderson, 1885 from the southwest Atlantic Ocean (Pereira et al., 2021). Pseudione apoisos sp. nov. can be distinguished from P. chiesai by the following characters (those of P. chiesai in parentheses): female with weakly tuberculate margins on coxal plates (female with strongly tuberculate margins on coxal plates), female without tuberculate raised structures on posterior pereomeres (female with tuberculate raised structures on posterior pereomeres), female without tuberculate margins on pleomeres 1 and 2 (female with tuberculate margins on pleomeres), oostegite 1 with smooth surface and inner ridge (oostegite 1 with tuberculate surface and inner ridge), pereopod 7 with smooth basis (pereopod 7 basis with large tubercles), and male without midvental tubercles on pereomeres or pleomeres (male with midventral tubercles on pereomeres and pleomeres). This is the first bopyrid described infesting Curtonida isos and belongs to the Pseudione crénéles group sensu Bourdon (Bourdon, 1972b).</p></div>	https://treatment.plazi.org/id/039BD60BFF9E3F1A7AE1FE49FDDB60C4	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		MagnoliaPress via Plazi	Williams, Jason D.;Boyko, Christopher B.;Zheng, Justin	Williams, Jason D., Boyko, Christopher B., Zheng, Justin (2026): A new genus and four new species of parasitic isopods (Isopoda: Epicaridea) from deep water squat lobster hosts (Decapoda: Anomura) off New Zealand. Zootaxa 5777 (1): 61-90, DOI: 10.11646/zootaxa.5777.1.3, URL: https://doi.org/10.11646/zootaxa.5777.1.3
039BD60BFF9C3F177AE1F9A6FB1862CC.text	039BD60BFF9C3F177AE1F9A6FB1862CC.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Pseudione bourdoni Williams & Boyko & Zheng 2026	<div><p>Pseudione bourdoni sp. nov.</p><p>(Figs. 6, 7)</p><p>Pseudione cf. fibriata Richardson, 1910 — Boyko et al., 2024: 70 [New Zealand, material examined below].</p><p>Type material: New Zealand: Holotype, mature female (10.0 mm; NIWA 176425) with cryptoniscus larva of Bourdonia inexpectata Boyko, Williams &amp; Sancetta, 2024 in marsupium (NIWA 173610), mature male allotype (3.5 mm; NIWA 176426), infesting right branchial chamber of female Munidopsis victoriae Baba &amp; Poore, 2002 (15.0 mm CL), Stn. TAN0509/43, 42.8416672 S, 178.9246674 E to 42.8428345 S, 178.9586639 E [42°50'30.0"S 178°55'28.8"E to 42°50'34.2"S 178°57'31.2"E], 1004–1007 m, 28 June 2005 (NIWA 19231B); female paratype with epicaridium larvae (10.5 mm) (NIWA 176427), infesting left branchial chamber of female M. victoriae (14.2 mm CL), Stn. TAN0509/43, 42.8416672 S, 178.9246674 E to 42.8428345 S, 178.9586639 E [42°50'30.0"S 178°55'28.8"E to 42°50'34.2"S 178°57'31.2"E], 1004–1007 m, 28 June 2005 (NIWA 19231A).</p><p>Type host: Munidopsis victoriae Baba &amp; Poore, 2002 .</p><p>Description: Holotype mature female (NIWA 176425): Body (Fig. 6A, B) elongate, segments distinct, body asymmetrical, dextral (~ 30°); total length 10.0 mm, maximal width (across pereomere 3) 5.7 mm. Head subovate (Fig. 6A), length 1.9 mm, width 2.9 mm, convex anteriorly and posteriorly, not fused with first pereomere, dorsal surface smooth. Frontal lamina thin, extending laterally beyond margins of head, tuberculate on lateral margins (Fig. 6A), eyes absent. Pereon broadest across pereomere 3, tapering anteriorly and posteriorly (Fig. 6A); lateral margins of all pereomeres tuberculate. Digitate coxal plates on sides of all pereomeres; dorsolateral bosses and tergal projections on pereomeres 1–4.</p><p>Antennules of three articles each (Fig. 6C), not extending beyond anterior margin of head; basal article ovate, few scales near posterior margin, with two large wart-like protrusions; second article cylindrical, few (ca. seven) setae distally; terminal article narrow, tapered, tuft of ca. five short setae distally; articles 1 and 2 each approximately twice as wide as subsequent article.</p><p>Antennae of five articles each (Fig. 6C); basal article oblong, with few spinous scales, second article subquadrate, third and fourth articles cylindrical with ca. 3–5 distal setae, fifth article narrowly cylindrical with tuft of ca. seven distal setae; article 4 slightly wider than terminal article, articles 1–3 each approximately twice as wide as following article.</p><p>Barbula (Fig. 6E) with two tuberculate tapered projections on each side; middle region lobate.</p><p>Maxillipeds (Fig. 6D) each of broad anterior lobe and irregularly indented anterior margin, palp absent; posterior lobe triangular with large, rounded spur.</p><p>Pereopods similar in structure (Fig. 6H, I), pereopod 7 largest, others slightly decreasing in size anteriorly; all segments distinct, dactylus curved, much more conspicuous on posterior pereopods; propodus ovate without socket for dactylus insertion, carpus subtriangular with distal tuft of setae, merus subtriangular with spinous scales, ischium elongate, with ventral median bulge, basis broadly subquadrate with dorsal ridge.</p><p>Marsupium (Fig. 6B) of five pairs of smooth oostegites. Oostegite 1 (Fig. 6F, G) anterior lobe subtriangular, internal ridge irregularly tuberculate; posterior lobe subovate with posteromedial point extending slightly medially, not posteriorly.</p><p>Pleon length 3.4 mm, of six distinct pleomeres (Fig. 6A, B). Pleomeres 1–5 with uniramous digitate lateral plates and biramous, digitiform pleopods (Fig. 6A, B, J), pleomeres, lateral plates and pleopods progressively smaller posteriorly; exopods triangular; endopods tapered (Fig. 6J); wart-like growth on pleopod 4 exopod (see Remarks). Pleotelson (Fig. 6A) with pair of tapered digitate uniramous uropods.</p><p>Allotype male: (NIWA 176426): Body (Fig. 7A, B) elongate, unpigmented, all segments distinct, total length 4.3 mm, maximal width (across pereomeres 3–6) 1.8 mm. Head ovate, distinct from pereomere 1 (Fig. 7A), length 0.6 mm, width 0.9 mm, anterior margin broadly rounded (Fig. 7A), eyes absent, cephalic slits present.</p><p>Antennules of three articles each; all articles with few distolateral setae; terminal articles each with tuft of setae (Fig. 7C).</p><p>Antennae of five articles each, extending beyond margin of head; all articles with few distolateral setae; terminal articles each with tuft of setae (Fig. 7A, C).</p><p>Maxillipeds each of one small distally tapered article, with terminal setae; pair of low, rounded knob-like structures anterolaterally to maxillipeds (Fig. 7D).</p><p>Pereomeres (Fig. 7A, B) broadest across pereomeres 3–6, tapering anteriorly and posteriorly, laterally rounded; lateral margins of pereomere 1 directed anteriorly, 3–6 laterally, 7 posteriorly; midventral tubercles absent.</p><p>Pereopods (Fig. 7B, C, E) 1 smallest, 2–7 larger, similar in size and morphology; each with all segments distinct, dactylus curved, propodus ovate with small socket for dactylus insertion, carpus subquadrate to subtriangular in posterior pairs, merus subquadrate, ischium subovate, basis subovate; propodus, carpus and merus with spinous scales, propodus with spinous scales on socket, carpus with setae at distal tip.</p><p>Pleon length 1.1 mm, of six distinct pleomeres (Fig. 7A, B), pleomere 1 much narrower than pereomere 7, pleomeres narrowing posteriorly, 1–4 distinctly segmented, 5 and 6 fused with lateral indications of segmentation; four pairs of uniramous pleopods; midventral tubercles absent (Fig. 7B). Pleotelson (Fig. 7A, B) ending in posterior nipple-shaped anal cone; uropods absent.</p><p>Distribution: Known only from the type locality in New Zealand, 42°50'30.0"S 178°55'28.8"E to 42°50'34.2"S 178°57'31.2"E, 1004–1007 m (see Fig. 19).</p><p>Etymology: The species name is given in honor of Roland Bourdon (1931–2024), one of the most important and prolific epicaridean biologists of all time. Anyone working in this taxon would find it difficult not to cite at least one of his papers in every publication. It is fitting that this species is named after Dr. Bourdon, because the marsupium of the holotype contained a paratype of the cabiropid Bourdonia inexpectata .</p><p>Remarks: This new species is most similar to Pseudione fibriata Richardson, 1910 (see below) in overall body shape and structures of the female, including the presence of a ridge on the dorsal surface of the basis on the pereopods. Pseudione bourdoni sp. nov. can be distinguished from P. fibriata by the following characters (those of P. fibriata in parentheses): female body elongate (body compact), head without anterior indentation (head with anterior indentation), without hook-like extensions on pleomeres 5–7 on long side of body (with hook-like extensions on pleomeres 5–7 on long side of body), with distally narrow lateral plates with tubercles on margins (female with distally broad lateral plates with tubercles on surfaces), male with pereopod 1 slightly smaller and pereopods 2–7 similar in size (pereopods 1–4 large, 5–7 much smaller) and pleomeres 5 and 6 fused (pleomeres 5 and 6 distinct). This is the first bopyrid described infesting Munidopsis victoriae and belongs to the Pseudione crénéles group sensu Bourdon (Bourdon, 1972b). The holotype bore a large wart-like growth on the exopod of the left fourth pleopod (Fig. 6K, L); the structure was removed from the host to confirm it was not a hyperparasite. The tissue of the growth appears to be the same as the exopod and is likely the result of prior damage to the pleopod.</p></div>	https://treatment.plazi.org/id/039BD60BFF9C3F177AE1F9A6FB1862CC	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		MagnoliaPress via Plazi	Williams, Jason D.;Boyko, Christopher B.;Zheng, Justin	Williams, Jason D., Boyko, Christopher B., Zheng, Justin (2026): A new genus and four new species of parasitic isopods (Isopoda: Epicaridea) from deep water squat lobster hosts (Decapoda: Anomura) off New Zealand. Zootaxa 5777 (1): 61-90, DOI: 10.11646/zootaxa.5777.1.3, URL: https://doi.org/10.11646/zootaxa.5777.1.3
039BD60BFF913F107AE1FC65FDCD6250.text	039BD60BFF913F107AE1FC65FDCD6250.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Pseudione fibriata Richardson 1910	<div><p>Pseudione fibriata Richardson, 1910</p><p>(Figs. 8, 9)</p><p>Pseudione fibriata Richardson, 1910: 37, fig. 34 (Philippines, ex Gonionida andamanica (Alcock, 1894)) .— Shiino, 1952: 41 (mention).— Bourdon, 1967: 290 (mention).— Bourdon, 1968: 187 (mention).— Bourdon, 1972: 825 (mention).— Palisoc, 1987: 281 (mention).— Kazmi &amp; Boyko, 2005: 2 (list).— Boyko et al., 2012: 11, 16, 19 (list).— Brito et al., 2018: 449 (mention).— Pereira et al., 2021: 369–370 (mention).— Romero-Rodríguez &amp; Álvarez, 2021: 330 (mention).— Corral, 2022: 75 (list).</p><p>Pseudione fimbriata [sic]—Nierstrasz &amp; Brender à Brandis, 1923: 76, fig. 10a, b (Indonesia, ex “ Munida ” species).—Nierstrasz &amp; Brender à Brandis, 1925: 3 (mention).</p><p>Material examined: Philippines: Mature female lectotype (10.4 mm), infesting left branchial chamber of female Gonionida andamanica (Alcock, 1894) (19.6 mm CL; USNM 151697), Sta. 5126, 10°34'45"N, 121°47'30"E, Nogas Island (W.), 26°30'E, 11.75 miles, coll. Albatross, 3 Feb 1908 (USNM 40924) . Indonesia: Mature female (6.7 mm), mature male (3.2 mm), ex “ Munida ” sp., Sta. 254, 5°40'S, 132°26'E, 310 m, coll. Siboga Expedition 10 Dec 1899 (ZMA.CRUS.I.260336) .</p><p>Type host: “ Unknown”: (see Richardson, 1910) but identified herein as Gonionida andamanica (Alcock, 1894) (see Remarks).</p><p>Redescription: Lectotype mature female (USNM 40924): Body (Fig. 8A) compact, segments distinct, body asymmetrical, sinistral (~ 13°); total length 10.4 mm, maximal width (across pereomere 3) 7.5 mm. Head triangular (Figs. 8A, 9A), length 1.8 mm (not including frontal lamina), width 2.9 mm, weakly convex anteriorly with medial indentation, strongly convex posteriorly, not fused with first pereomere, dorsal surface smooth. Frontal lamina broad, extending laterally beyond margins of head, weakly tuberculate on entire margin (Figs. 8A, 9A), eyes absent. Pereon broadest across pereomere 3, tapering anteriorly and posteriorly (Figs. 8A, 9A); lateral margins of all pereomeres strongly tuberculate, those on pereomeres 5–7 with hook-like extension. Strongly digitate coxal plates on pereomeres 1–4, extending beyond dorsolateral bosses; large dorsolateral bosses and weak tergal projections on pereomeres 1–4.</p><p>Antennules of three articles each, not extending beyond anterior margin of head.</p><p>Antennae of four articles each, not extending beyond anterior margin of head.</p><p>Barbula (Fig. 8D) with two pairs of long lateral projections bearing fringe of digitate processes along their lateral margins, middle region smooth except for pair of rounded tubercles on each side clustered close to lateral projections.</p><p>Maxillipeds (Fig. 8C) each of broad anterior lobe with anterolateral corner produced into blunt point in place of palp extending far forward of anterior margin; posterior lobe with small, tapered, distally rounded spur.</p><p>Pereopods all of similar structure, pereopod 5 longest, others slightly decreasing in size anteriorly and posteriorly (Fig. 9A, B); all segments distinct, dactylus curved, propodus ovate without socket for dactylus insertion, carpus subtriangular with distal tuft of setae, merus subtriangular with spinous scales, ischium elongate, with ventral median bulge, basis broadly subquadrate with dorsal ridge.</p><p>Marsupium closed, five pairs of smooth oostegites, oostegites 2–4 (Fig. 9B) with tuberculate surfaces, others smooth. Oostegite 1 (Fig. 8B) with anterior lobe rounded, posterior lobe subovate with weakly produced posterolateral extension and tuberculate internal ridge.</p><p>Pleon length 3.8 mm, of six distinct pleomeres (Figs. 8A, 9A, B). Pleomeres 1–5 with uniramous digitate broadly triangular lateral plates and biramous tuberculate pleopods with similarly sized endopods and exopods (Fig. 8A), pleomeres and pleopods progressively smaller posteriorly, lateral plates little decreasing in size posteriorly; exopods triangular; endopods tapered. Pleotelson (Figs. 8A, 9A, B) with pair of tapered digitate uniramous uropods similar in shape to pleopod 5.</p><p>Male: (ZMA.CRUS.I.260336): Body (Fig. 9C) elongate, unpigmented, all segments distinct, total length 3.2 mm, maximal width (across pereomere 3) 1.2 mm. Head ovate, distinct from pereomere 1 (Fig. 9C), length 0.3 mm, width 0.8 mm, anterior margin broadly rounded (Fig. 9C), eyes absent, cephalic slits present.</p><p>Antennules of three articles each; basal articles each with three distolateral setae, second articles each with seven subterminal setae; terminal articles each with tuft of ca. nine setae (Fig. 8E).</p><p>Antennae of five articles each, extending beyond margin of head; second to fourth articles each with one, two, and four distolateral setae, respectively; terminal articles each with tuft of ca. nine setae (Fig. 8E).</p><p>Maxillipeds each of two articles with distal pair of setae (Fig. 8G).</p><p>Pereomeres (Fig. 9C) broadest across pereomeres 3, 4, tapering anteriorly and posteriorly, pereomeres 1–4 laterally subquadrate, anterolateral corners directed anteriorly; 5–7 laterally rounded, directed laterally; midventral tubercles absent.</p><p>Pereopods nearly all extending beyond margins of pereomeres; pereopods 1–4 large, similar in size and morphology, merus and carpus of each partly fused, propodus deeply concave anteriorly, socket for dactylus insertion small, located atop small tubercle; dactylus long and slender, extending across propodal concavity to carpus, sharply pointed. Pereopods 5–7 much smaller (Figs. 8F, H, I, 9C), all articles distinct; tuft of short spines on distal edge of carpus; ischium and basis elongate; pereopods 5–7 each with small blunt dactylus, propodus ovate without concave anterior margin; carpus and merus not fused, carpal socket for dactylus insertion small, carpus conical, distally setose and longer than merus with spinuous scales; merus subquadrate; ischium and basis elongate.</p><p>Pleon length 0.6 mm, of six distinct pleomeres (Figs. 8J, 9C), pleomere 1 much narrower than pereomere 7, segments narrowing posteriorly, lateral margins of pleomeres 1–4 produced, pleomere 5 with rounded lateral margins (Fig. 8J); five pairs of uniramous pleopods; midventral tubercles absent. Pleotelson (Fig. 8J) rounded with anal slit and small patches of setae ventrolaterally.</p><p>Distribution: Known from the Philippines (type locality) and Indonesia, 310–1357 m.</p><p>Remarks: Richardson’s (1910) type material consisted of a mature female (Fig. 8A–D) and “ two males in the cryptoniscus stage and immature male probably in the microniscus stage.”We examined the female,redescribed above, and “cryptoniscus larvae” which are actually of an unidentified species belonging to Cabiropidae (Cryptoniscoidea); the supposedly “immature male” is missing but is clearly not a microniscus. From Richardson’s (1910) drawing it appears that the male has an aberrantly formed pleotelson. Because the type series is mixed, we herein select the mature female syntype as lectotype. Richardson (1910) did not give any information about the identity of the host, but Baba (1988) published the only record of a squat lobster collected from Albatross Station 5126, the same station that yielded the type series of P. fibriata . An inquiry to the Smithsonian (Karen Reed, pers. comm.) resulted in confirmation that this specimen of G. andamanica (USNM 151697) has a large branchial swelling which is now empty; this was certainly the host of the lectotype of P. fibriata .</p><p>Nierstrasz &amp; Brender à Brandis (1923) reported on a mature female and male pair of this species (as “ Pseudione fimbriata ” [sic]) from Indonesia on an unidentified “ Munida ” species (identity still unknown) and illustrated the male. We have examined these specimens (Figs. 8E–J, 9) and find that the female agrees in all respects to the female lectotype of Richardson (1910) and consider them conspecific. The male is also redescribed and many of its characters (e.g., relative size of pereopods and number of distinct pleomeres) provide additional evidence that the female and male pair from New Zealand, described as P. bourdoni above, is not conspecific with P. fibriata .</p><p>The specimens identified from the Indian Ocean as Pseudione minimocrenulata by Kazmi &amp; Boyko (2005) do not belong to that species (compare the female in their figure 2A with those of Nierstrasz &amp; Brender à Brandis, 1931: fig. 22 and Bourdon, 1976: fig. 9). The Indian Ocean specimens are more similar to those of P. fibriata but show differences in the width of the frontal lamina of females (much narrower in P. fibriata), body shape of females (more compact in P. fibriata) and pereopod morphology of males (anterior pairs much larger in P. fibriata). It is probable that the Indian Ocean specimens represent an undescribed species, but direct examination of additional material is necessary for confirmation.</p></div>	https://treatment.plazi.org/id/039BD60BFF913F107AE1FC65FDCD6250	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		MagnoliaPress via Plazi	Williams, Jason D.;Boyko, Christopher B.;Zheng, Justin	Williams, Jason D., Boyko, Christopher B., Zheng, Justin (2026): A new genus and four new species of parasitic isopods (Isopoda: Epicaridea) from deep water squat lobster hosts (Decapoda: Anomura) off New Zealand. Zootaxa 5777 (1): 61-90, DOI: 10.11646/zootaxa.5777.1.3, URL: https://doi.org/10.11646/zootaxa.5777.1.3
039BD60BFF963F0C7AE1FC19FB1B609C.text	039BD60BFF963F0C7AE1FC19FB1B609C.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Pseudione hayi Nierstrasz & Brender	<div><p>Pseudione hayi Nierstrasz &amp; Brender à Brandis, 1931</p><p>(Figs. 10–12)</p><p>Pseudione hayi Nierstrasz &amp; Brender à Brandis, 1931: 165–167, figs. 36–39 (New Zealand, ex Munida subrugosa Dana, 1852 = Grimothea gregaria (Dana, 1852)) .—Nierstrasz &amp; Brender à Brandis, 1832: 94–95 (mention).— Dollfus et al., 1933: 75 (list).— Shiino, 1951: 32 (mention).— Shiino, 1958: 37 (mention).— Page, 1985: 186, 189, 190, fig. 4 (New Zealand, 366– 732 m, ex “ Galathea sp. ?” or Munida gracilis Henderson, 1885 = Scolonida gracilis (Henderson, 1885); see Remarks).— Webber et al., 2010: 222 (list).— Boyko et al., 2012: 11, 15, 18, 24 (list).</p><p>Material examined: New Zealand, off Auckland Islands: ovigerous female (7.8 mm), mature male (3.1 mm) (NIWA 176428), from left branchial chamber of male (13.0 mm CL) Grimothea gregaria (Fabricius, 1793), Stn. D 49, 50.705°S, 166.2°E, 705 m, May 1963 (NIWA 10120 A) . Ovigerous female (5.6 mm), mature male (2.2 mm) (NIWA 176429; male on SEM stub), from left branchial chamber of male (13.0 mm CL) G. gregaria, Stn. D 49, 50.705°S, 166.2°E, 705 m, May 1963 (NIWA 10120 B) .</p><p>Hosts: Grimothea gregaria (Dana, 1852) (type host), Scolonida gracilis (Henderson, 1885) .</p><p>Redescription: Female (measurements based on NIWA 176428 ex NIWA 10120A): Body elongate ovate (Fig. 10A), segments distinct, body faintly sinistral, nearly symmetrical; total length 7.8 mm, maximal width (across pereomere 3) 5.3 mm. Head subrectangular; length 1.5 mm, maximal width (at anterior end) 2.3 mm, weakly convex anteriorly, strongly convex posteriorly, not fused with pereomere 1, dorsal surface smooth. Frontal lamina broad, extending slightly beyond lateral margins of head (Fig. 10A); eyes absent. Pereon (Fig. 10A) of seven pereomeres, broadest across pereomere 3, tapering anteriorly and posteriorly. Broad dorsolateral bosses and small tergal projections on pereomeres 1–3 of left side and 1 and 2 of right side; coxal plates absent; sides of pereomeres 4–7 extending posteriorly, more pronounced on right side.</p><p>Antennules of three articles each (Fig. 10C), not extending beyond anterior margin of head; each article more than twice width of following one and somewhat shorter than it; basal article ovate, second article subquadrate with ca. seven distolateral setae, third article cylindrical with tuft of ca. four setae distally; all articles with spinous scales.</p><p>Antennae of four articles each (Fig. 10C); basal article elongate, subrectangular, second article rectangular, third and fourth articles cylindrical, fourth article with distal tuft of ca. four setae; all articles with spinous scales.</p><p>Barbula (Fig. 10E) with one smooth falcate lateral projection on each side; middle region with small, rounded lobes, lateral two larger than others.</p><p>Maxillipeds (Fig. 10D) each of broad, rounded anterior lobe, with fused palp bearing ca. nine setae reaching far forward of anterolateral margin of maxilliped and tipped with irregular tuft of setae; posterior lobe narrower than anterior one, its antero-medial corner produced into slender elongate spur extending far beyond anterior margin.</p><p>Pereopods (Fig. 10H, I) similar in structure; increasing slightly in size from pereopod 1 to 7; all articles distinct, each dactylus small, curved and bluntly pointed, each propodus ovate, each carpus elongate, each merus subtriangular, each ischium elongate, each basis ovate; all articles with spinous scales, carpus with stout setae at anterior tip.</p><p>Marsupium closed (Fig. 10B), composed of five pairs of smooth oostegites. Oostegite 1 (Fig. 10F, G) anterior lobe ovate, posterior lobe subtriangular, internal ridge mostly smooth with few small lobes laterally, posterolateral point bluntly rounded and extending well beyond posterior margin.</p><p>Pleon length 2.7 mm, of six distinct pleomeres (Fig. 10A, B). Pleomeres 1–5 with uniramous, rounded, lateral plates with tapered tips, left and right lateral plates slightly asymmetrical (Fig. 10A, B), anterior pairs similar in size to posterior pairs. Pleomeres 1–4 with biramous, digitiform pleopods (Fig. 10B), anterior pairs similar to posterior pairs. Pleomere 5 with uniramous pleopods. Pleotelson (Fig. 10J) ending in pair of short uniramous uropods overreached by curved lateral margins of pleomere 5.</p><p>Male (measurements based on NIWA 176428 ex NIWA 10120A): Body (Fig. 11A, 12A) elongate, unpigmented, all segments distinct, total length 3.3 mm, maximal width (across pereomere 4) 1.1 mm. Head distinct from pereomere 1 (Fig. 11A, 12A), length 0.35 mm, head width 0.6 mm, anterior margin broadly rounded, eyes near anterior margin (Fig. 11A).</p><p>Antennules (Figs. 11B, 12B, C) of three articles each, with few spinous scales on all articles; basal article with four distolateral setae, second article with ca. nine distolateral setae, terminal article with distal tuft of ca. 10 setae.</p><p>Antennae of six articles each, extending slightly beyond margin of head, with few spinous scales and distal tuft of ca. six setae (Figs. 11B, 12B, C).</p><p>Maxillipeds each of two articles, thin and tapering, with few distal setae (Fig. 11C).</p><p>Pereomeres (Fig. 11A) broadest across pereomere 4, tapering anteriorly and posteriorly; lateral margins of pereomeres 1–3 directed anteriorly, of 4 directed laterally, of 5–7 directed posteriorly (Fig. 11A); midventral tubercles absent.</p><p>Pereopods 1–7 (Figs. 11B, E, 12E, F) all similar in morphology, gradually becoming considerably larger posteriorly from 1 to 7; all segments of each pereopod distinct, dactylus short, curved, propodus ovate, carpus cylindrical, merus square, ischium subovate, basis elongate; some segments with spinous scales, carpus with stout setae at anterior tip. On posterior pereopods, each propodal socket for dactylus insertion covered with spinous scales (Fig. 11E).</p><p>Pleon (Figs. 11A, D, 12G, H) length 1.1 mm, of six pleomeres, narrower than pereon, pleomeres tapering posteriorly, all pleomeres distinctly segmented, pleomeres 1–4 laterally extended; pleomeres 1–5 with low, ovate uniramous pleopods; midventral tubercles absent (Fig. 11D). Pleotelson (Figs. 11A, D, 12G, H) medially indented, anal cone present, spinous scales, setae and uropods absent.</p><p>Distribution: Known only from New Zealand (off Auckland Islands), 366–732 m (see Fig. 19).</p><p>Remarks: Pseudione hayi is known only from two previous records, both from New Zealand waters (Nierstrasz &amp; Brender à Brandis, 1931; Page, 1985). The type host is Grimothea gregaria, the same species as found hosting the present material, whereas Page (1985) confusingly gave both “ Galathea sp. ?” and Munida gracilis (= Scolonida gracilis) as the hosts for his material. The latter identification is likely the correct one.</p><p>The present material is nearly identical to the syntypes; although the lateral plates on the left side of the female syntype appear smaller than those of the present specimens (see Nierstrasz &amp; Brender à Brandis, 1931: fig. 36), they are merely curled up and would appear nearly identical if laid flat. Page (1985: fig 4D) reported the antennae of the female to have only three articles but his drawing shows a subterminal constriction that probably indicated that there were four articles present as also seen in the material examined herein. The present males are identical to the one illustrated by Nierstrasz &amp; Brender à Brandis (1931: fig. 38); Page’s (1985) male was recorded as “immature” and does show an oddly shaped head. Page (1985) reported that the antennae of his “juvenile” male had four articles, whereas antennae of our males have six articles each; it is not clear whether Page (1985) merely counted the articles wrong (they were not illustrated), or perhaps this difference is due to the possible immaturity of his specimen.</p><p>This is the second record of Pseudione hayi infesting its type host, Grimothea gregaria .</p></div>	https://treatment.plazi.org/id/039BD60BFF963F0C7AE1FC19FB1B609C	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		MagnoliaPress via Plazi	Williams, Jason D.;Boyko, Christopher B.;Zheng, Justin	Williams, Jason D., Boyko, Christopher B., Zheng, Justin (2026): A new genus and four new species of parasitic isopods (Isopoda: Epicaridea) from deep water squat lobster hosts (Decapoda: Anomura) off New Zealand. Zootaxa 5777 (1): 61-90, DOI: 10.11646/zootaxa.5777.1.3, URL: https://doi.org/10.11646/zootaxa.5777.1.3
039BD60BFF8A3F087AE1FDD5FAA160C4.text	039BD60BFF8A3F087AE1FDD5FAA160C4.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Pseudione sagamiensis Nierstrasz & Brender	<div><p>Pseudione sagamiensis Nierstrasz &amp; Brender à Brandis, 1932</p><p>(Figs. 13–15)</p><p>Pseudione sagamiensis Nierstrasz &amp; Brender à Brandis, 1932: 95–96, figs. 10, 11 (Japan, 180 m, ex Galathea integra Benedict, 1902 = Phylladiorhynchus pusillus (Henderson, 1885)) .— Neveu-Lemaire et al., 1934: 75 (list).— Shiino, 1936: 181–183, fig. 2 (Japan, 80–280 fms [= 146–512 m], ex G. integra = P. pusillus).— Shiino, 1972: 7 (list).— Saito et al., 2000: 38 (list).— Boyko et al., 2012: 11, 17 (list).</p><p>“bopyrid in the lateral branchial cavity” Schnabel &amp; Ahyong, 2019: 326 (in part; material examined herein).</p><p>“unidentified Pseudioninae ” Kokasko et al., 2025b: 6 (New Zealand, 625 m, ex Phylladiorhynchus nui Schnabel &amp; Ahyong, 2019; material examined herein).</p><p>Material examined: New Zealand, Northland Plateau: ovigerous female (4.9 mm), mature male (1.5 mm) (NIWA 160809), from right branchial chamber of female (7.3 mm CL) Phylladiorhynchus nui Schnabel &amp; Ahyong, 2019, NZOI <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=174.293&amp;materialsCitation.latitude=-34.705" title="Search Plazi for locations around (long 174.293/lat -34.705)">Stn.</a> I366, 34.705°S, 174.293°E, 705 m, 20 Nov 1977 (NIWA 10116). Ovigerous female (5.3 mm), mature male (2.0 mm) (NIWA 176430) from right branchial chamber of female (8.5 mm CL) P. nui, NZOI Stn. I 353, 34.757°S, 174.068°E, 530 m, 19 Nov 1977 (NIWA 10132). <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=173.842&amp;materialsCitation.latitude=-34.677" title="Search Plazi for locations around (long 173.842/lat -34.677)">Female</a> with epicaridean larvae (5.0 mm), mature male (1.7 mm) (NIWA 176431; male on SEM stub), from right branchial chamber of female (8.2 mm CL) P. nui, NZOI Stn. I 351, 34.677°S, 173.842°E, no depth information, 19 Nov 1977 (NIWA 10921). Mature female (4.6 mm) with three externae of Duplorbis koru Kokasko, Williams, Wong &amp; Chan, 2025 in marsupium (NIWA 175099), mature male (1.2 mm) (NIWA 175100), from right branchial chamber of female (5.6 mm CL) P. nui, NZOI Stn. I 36, 35.003°S, 174.820°E, 625 m, 07 May 1975 (NIWA 21264). Australia, off Norfolk Island: female with epicaridean larvae (2.0 mm) (NIWA 176470), from left branchial chamber of male (2.4 mm CL) Phylladiorhynchus erebus Schnabel &amp; Ahyong, 2019, NZOI <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=168.25&amp;materialsCitation.latitude=-29.132" title="Search Plazi for locations around (long 168.25/lat -29.132)">Stn.</a> I85, 29.132°S, 168.25°E, 290 m, 22 Jul 1975 (NIWA 21201) .</p><p>Hosts: Phylladiorhynchus pusillus (Henderson, 1885) (type host), Phylladiorhynchus nui Schnabel &amp; Ahyong, 2019, Phylladiorhynchus erebus Schnabel &amp; Ahyong, 2019 .</p><p>Redescription: Female (measurements based on NIWA 160809): Body tear-dropped shaped (Figs. 13A, B, 15A–C), slightly distorted dextrally (~ 20°); total length 4.9 mm, maximal width (across pereomeres 2 and 3) 2.6 mm. Head subrectangular (Figs. 13A, 14A–C), length 1.0 mm, width 1.2 mm, weakly convex anteriorly, strongly convex posteriorly, not fused with pereomere 1. Frontal lamina thin, slightly extending beyond lateral margins of head (Fig. 13A); eyes absent. Pereon (Figs. 13A, 14A–C) of seven pereomeres, broadest across pereomere 2, tapering posteriorly. Thin coxal plates on pereomeres 1–4; dorsolateral bosses present on pereomeres 2–4 on long side of pereon, tergal projections on pereomeres 1–5 (Figs. 13A, 14A–C).</p><p>Antennules (Fig. 13C) of three articles each, terminal article setose; extending slightly beyond margin of head.</p><p>Antennae (Fig. 13C) of four articles each, terminal article setose; extending slightly beyond margin of head.</p><p>Barbula (Fig. 13E) with one smooth falcate lateral projection on each side; middle region produced into small, rounded lobes.</p><p>Maxillipeds (Fig. 13D) each of subrectangular anterior lobe, unsegmented palp attached without articulation on anterior margin well away from setose anterolateral corner and extending far forward of anterior margin, tipped with five large setae; posterior lobe broader, without distinct spur.</p><p>Pereopods (Fig. 13H, I) similar in structure, slightly increasing in size posteriorly.</p><p>Marsupium (Fig. 13B) closed, with five pairs of smooth oostegites. Oostegite 1 (Fig. 13F, G) anterior lobe ovate, posterior lobe subtriangular with setose margin, internal ridge smooth along most of length with few low tubercles towards lateral margin.</p><p>Pleon length 1.5 mm (Figs. 13A, J, 14A–C), of six distinct pleomeres. Pleomeres 1–5 with biramous pleopods and uniramous lateral plates. Pleotelson Figs. 13A, J, 14A–C) with pair of large, slender uniramous uropods.</p><p>Male (measurements based on NIWA 160809): Body tear-drop shaped, unpigmented, all segments distinct (Figs. 14A, 15D), total length 1.5 mm, maximal width 0.6 mm. Head distinct from pereomere 1, length 0.2 mm, width 0.35 mm, eyes absent, cephalic slits present (Fig. 15D).</p><p>Antennules of three articles each, basal article with two subterminal setae, second article with six distal setae, terminal article with six terminal setae; not extending beyond margin of head (Fig. 15E).</p><p>Antennae of five articles each, second article with one distal seta, third article with two distal setae, fourth article with four distal setae, terminal article with five distal setae; extending slightly beyond margin of head (Fig. 15D, E).</p><p>Maxillipeds each of two articles, with tuft of three distal setae (Fig. 15F).</p><p>Pereomeres broadest across pereomere 4, tapering anteriorly and posteriorly (Figs. 14A, 15D); lateral margins of pereomere 1 directed slightly anteriorly, pereomeres 3–7 directed laterally; midventral tubercles absent.</p><p>Pereopods (Fig. 14A–C) 1–7 similar in size and structure (Fig. 14A–C); each ischium with lateral margin slightly to markedly notched; each propodus with socket for insertion of respective dactylus.</p><p>Pleon length 0.4 mm (Figs. 14E, 15D), of six pleomeres, markedly narrower than pereon, pleomeres tapering posteriorly, all pleomeres distinctly segmented, 1–5 with low, ovate uniramous pleopods; midventral tubercles absent. Pleotelson (Fig. 14E, F) medially indented, anal cone and lateral tufts of setae present, uropods absent.</p><p>Remarks: Pseudione sagamiensis was originally recorded infesting a specimen of Galathea integra (a synonym of Phylladiorhynchus pusillus) collected in Sagami Bay and subsequently reported only once from the same host species collected in Misaki, Japan (Shiino, 1936). Although the present specimens were collected on different hosts, albeit ones congeneric with the type host, and nearly 9,000 km away from the type locality (see Fig. 19), we can find no obvious morphological differences between our specimens and those previously reported as P. sagamiensis . It is possible that future analyses using genetic data may show the Japanese and New Zealand specimens to be part of a cryptic species group. It should be noted that NIWA 21201 was too damaged to examine in detail, but the superficial body shape and proportions show it to be conspecific to the specimens found on Phylladiorhynchus nui .</p></div>	https://treatment.plazi.org/id/039BD60BFF8A3F087AE1FDD5FAA160C4	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		MagnoliaPress via Plazi	Williams, Jason D.;Boyko, Christopher B.;Zheng, Justin	Williams, Jason D., Boyko, Christopher B., Zheng, Justin (2026): A new genus and four new species of parasitic isopods (Isopoda: Epicaridea) from deep water squat lobster hosts (Decapoda: Anomura) off New Zealand. Zootaxa 5777 (1): 61-90, DOI: 10.11646/zootaxa.5777.1.3, URL: https://doi.org/10.11646/zootaxa.5777.1.3
039BD60BFF8E3F087AE1FB5DFDB46738.text	039BD60BFF8E3F087AE1FB5DFDB46738.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Bopyridae Rafinesque 1815	<div><p>Bopyridae gen. et sp. indet.</p><p>(Fig. 17)</p><p>Material examined: New Zealand: <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=178.4483&amp;materialsCitation.latitude=-35.8608" title="Search Plazi for locations around (long 178.4483/lat -35.8608)">Lillie Seamoint</a>: Munidopsis pyrochela Ahyong, 2014 (male with swollen, empty right branchial chamber; 11.5 mm CL), Stn. TAN1104/123, 35.8608°S, 178.4483°E to 35.8565°S, 178.4445°E (35°51.39’S, 178°26.67'E to 35°51.65'S, 178°26.90'E), 1251–1478 m, 19 Mar 2011 (NIWA 72879) .</p><p>Remarks: The swollen branchial chamber of this specimen was empty; apparently the bopyrid died before the host or was dislodged during collection and thus its identity is unknown. Munidopsis pyrochela was not previously reported as a host for any bopyrid. NIWA 72879 contains two specimens from this station per the label but only a female (13.2 mm CL) was cited by Ahyong (2014) as non-type material of his new species; the parasitized specimen reported on here was not mentioned.</p></div>	https://treatment.plazi.org/id/039BD60BFF8E3F087AE1FB5DFDB46738	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		MagnoliaPress via Plazi	Williams, Jason D.;Boyko, Christopher B.;Zheng, Justin	Williams, Jason D., Boyko, Christopher B., Zheng, Justin (2026): A new genus and four new species of parasitic isopods (Isopoda: Epicaridea) from deep water squat lobster hosts (Decapoda: Anomura) off New Zealand. Zootaxa 5777 (1): 61-90, DOI: 10.11646/zootaxa.5777.1.3, URL: https://doi.org/10.11646/zootaxa.5777.1.3
039BD60BFF8E3F0A7AE1F8A1FCB26471.text	039BD60BFF8E3F0A7AE1F8A1FCB26471.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Cryptodanalia Williams & Boyko & Zheng 2026	<div><p>Genus Cryptodanalia gen. nov.</p><p>Type species: Cryptodanalia australis sp. nov.</p><p>Description: As for the type species (see below).</p><p>Remarks: Cryptoniscidae currently contains eight genera with species found parasitizing decapods and rhizocephalans (Boyko et al., 2025). Females of species in most of the genera attach to their hosts using a specialized process which terminates in either stout or slender multiple processes or is broadly lobed while the body shapes range from nearly linear to strongly recurved (Boyko, 2014). A summary of the characters of the genera in this family is given in Table 1 and cryptoniscids are included in an upcoming key to all isopod genera (Poore et al., in press). Cryptodanalia gen. nov. is most similar to Danalia in body shape (recurved, wide gap between right and left lobes) but differs from that genus in having the attachment process formed of two bulbous lobes as opposed to the four hook-like lobes seen in species of Danalia .</p><p>Etymology: The name alludes to the similarity of the new genus to both Cryptoniscus (shape of the attachment process) and Danalia (body shape). The gender is feminine.</p></div>	https://treatment.plazi.org/id/039BD60BFF8E3F0A7AE1F8A1FCB26471	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		MagnoliaPress via Plazi	Williams, Jason D.;Boyko, Christopher B.;Zheng, Justin	Williams, Jason D., Boyko, Christopher B., Zheng, Justin (2026): A new genus and four new species of parasitic isopods (Isopoda: Epicaridea) from deep water squat lobster hosts (Decapoda: Anomura) off New Zealand. Zootaxa 5777 (1): 61-90, DOI: 10.11646/zootaxa.5777.1.3, URL: https://doi.org/10.11646/zootaxa.5777.1.3
039BD60BFF8C3F0A7AE1FACFFE3E6690.text	039BD60BFF8C3F0A7AE1FACFFE3E6690.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Cryptodanalia australis Williams & Boyko & Zheng 2026	<div><p>Cryptodanalia australis sp. nov.</p><p>(Fig. 18)</p><p>Type material: New Zealand: Holotype, mature female (2.2 mm; NIWA 176434), infesting abdomen of female Phylladiorhynchus australis Schnabel &amp; Ahyong, 2019 (3.6 mm CL), host also infested by female and male Parapleurocryptella poha Kokasko, Williams, Boyko &amp; Schnabel, 2025 in right branchial chamber (NIWA 175948), Stn. NZOI Stn. E908, 38.633°S, 172.683°E, 256 m, 28 March 1968 (NIWA 21254 ).</p><p>Type host: Phylladiorhynchus australis Schnabel &amp; Ahyong, 2019 .</p><p>Description: Holotype mature female (NIWA 176434): Body maximal width 2.2 mm; body sickle-shaped with five dorsal indications of segmentation and six rounded lobes (Fig. 18A–C), strongly recurved with wide gap between anterior and posterior ends of body, proximal and distal ends rounded, surface smooth, anterior end tapered, distal end rounded; anteroventral shield large (Fig. 18A–C). Trunk thick, very short, at anterior end of body, attachment lobes paired, bulbous, each approximately 0.3 mm in width and 0.5 mm in length (Fig. 18B–E). Male/ cryptoniscus unknown. Directly parasitizing ventral abdomen of squat lobster host (Fig. 18A).</p><p>Distribution: Known only from the type locality in New Zealand, 38.633°S, 172.683°E, 256 m (see Fig. 19).</p><p>Etymology: The species name alludes to the southern type locality of the parasite as well as to the host, P. australis .</p><p>Remarks: This species can be distinguished from all others in Cryptoniscidae by the characters discussed in Remarks under the genus.</p></div>	https://treatment.plazi.org/id/039BD60BFF8C3F0A7AE1FACFFE3E6690	Public Domain	No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.		MagnoliaPress via Plazi	Williams, Jason D.;Boyko, Christopher B.;Zheng, Justin	Williams, Jason D., Boyko, Christopher B., Zheng, Justin (2026): A new genus and four new species of parasitic isopods (Isopoda: Epicaridea) from deep water squat lobster hosts (Decapoda: Anomura) off New Zealand. Zootaxa 5777 (1): 61-90, DOI: 10.11646/zootaxa.5777.1.3, URL: https://doi.org/10.11646/zootaxa.5777.1.3
