identifier	taxonID	type	CVterm	format	language	title	description	additionalInformationURL	UsageTerms	rights	Owner	contributor	creator	bibliographicCitation
D3163CAE4EDC51B4BD52FF66CFE8AD4F.text	D3163CAE4EDC51B4BD52FF66CFE8AD4F.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Palaumysis Bacescu & Iliffe 1986	<div><p>Genus Palaumysis Bacescu &amp; Iliffe, 1986</p><p>Type species.</p><p>Palaumysis simonae Bacescu &amp; Iliffe, 1986 .</p><p>Diagnosis.</p><p>See Hanamura and Kase (2002).</p><p>Species composition.</p><p>Palaumysis contains five (including the new species): Palaumysis bahamensis Pesce &amp; Iliffe, 2002; P. jetama sp. nov.; P. philippinensis Hanamura &amp; Kase, 2002; P. pilifera Hanamura &amp; Kase, 2003; P. simonae Bacescu &amp; Iliffe, 1986 .</p></div>	https://treatment.plazi.org/id/D3163CAE4EDC51B4BD52FF66CFE8AD4F	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.		Pensoft via Plazi	Azman, Abdul-Rahim;Sawamoto, Shozo;Ahmad-Zaki, Abu-Bakar	Azman, Abdul-Rahim, Sawamoto, Shozo, Ahmad-Zaki, Abu-Bakar (2026): Hidden in the dark: A new record and species of cave-dwelling Palaumysis (Crustacea, Mysidacea) from Sipadan Turtle Tomb, Malaysia, with identification keys to world species. ZooKeys 1284: 205-215, DOI: 10.3897/zookeys.1284.192633
E554878BBDF75D3198E8CF69A8E9892C.text	E554878BBDF75D3198E8CF69A8E9892C.taxon	http://purl.org/dc/dcmitype/Text	http://rs.tdwg.org/ontology/voc/SPMInfoItems#GeneralDescription	text/html	en	Palaumysis jetama Azman & Sawamoto & Ahmad-Zaki 2026	<div><p>Palaumysis jetama sp. nov.</p><p>Figs 3, 4, 5</p><p>Type material.</p><p>Holotype, • adult male (BL. 2.52 mm, UKMMZ -1623); Allotype, • ovigerous female (BL. 2.88 mm, UKMMZ -1624); Paratypes, • seven males (BL. 2.52–2.70 mm), seven females (BL. 2.53–2.65 mm) (UKMMZ -1625); five females (BL. 2.61–2.85 mm, UKMMZ -1626); ten males, five females (NSMT -Cr 33264), <a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=118.62806&amp;materialsCitation.latitude=4.118" title="Search Plazi for locations around (long 118.62806/lat 4.118)">Turtle Tomb</a>, Sipadan Island, Sabah, Malaysia, 4°07'04.8"N, 118°37'41.0"E, SCUBA diving, 9 September 2025, 22 m depth, collectors: Azman B. A. R. and Ahmad-Zaki A. B.</p><p>Type locality.</p><p><a href="https://tb.plazi.org/GgServer/search?materialsCitation.longitude=118.62806&amp;materialsCitation.latitude=4.118" title="Search Plazi for locations around (long 118.62806/lat 4.118)">Turtle Tomb</a> of Sipadan Island, Sabah, Malaysia (4°07'04.8"N, 118°37'41.0"E), manual collection using 50 ml polypropylene conical centrifuge tube, depth ~ 20 m.</p><p>Diagnosis.</p><p>Adult body length not exceeding 3 mm. Carapace reduced, leaving the last five thoracic somites exposed. Eyes well developed, with globular cornea. Antennular peduncle with third segment robust and longest; base of outer flagellum bearing three to five sensory setae. Inner flagellum very short, composed of two to five articles; male lobe undeveloped. Antennal scale vestigial to rudimentary. Labrum evenly convex anteriorly, lacking frontal process or spine. Thoracic endopods 3–8 rather stout; carpo-propodi unsegmented and shorter than meri. Male pleopods rudimentary and unsegmented; pleopod 1 bearing a long procurved distal seta, pleopod 4 terminating in a strong spine. Female pleopods tiny and unsegmented. Marsupium composed of two pairs of rudimentary oostegites. Telson entire, subtriangular, armed apically with a pair of articulated or non-articulated spines, and lacking plumose setae on all margins. Exopod of uropod shorter than endopod, armed laterally with a few setae on posterior half.</p><p>Description.</p><p>Male. Head and cephalic appendage. Body pale white and translucent with reddish body parts (Fig. 3); cornea bright orange to brownish-red (Fig. 3). Carapace (Fig. 4 A, F) reduced in size, dorsal and lateral carapace folds weakly developed; frontal margin anteriorly produced into a subtriangular rostrum with a rounded apex; lateral margin of rostrum uniformly concave; posterior margin truncate, exposing five or six thoracic somites in dorsally; posterolateral part of the carapace with a narrow but distinct free lobe, resulting in a subquadrate posteroventral corner; cervical sulcus distinct; and anterolateral corner of the carapace acutely pointed (Fig. 4 B).</p><p>Eye (Fig. 4 A, B, F) large, cornea globular, well pigmented. Antennule peduncle (Fig. 5 A) with three segments; the basal segment is the longest, about 1.3 times as long as the median segment along mesial margin, unarmed; the median segment is the shortest with a ventral short lobe on subterminal position, unarmed; the terminal segment is slightly shorter than the first / basal segment, armed with long seta at distomesial corner and short seta at distolateral corner; outer flagellum long, bearing 10 sensory setae at proximal inner part; inner flagellum short, 5 - segmented. Antenna (Fig. 4 D) scale rudimentary, with three apical setae (two medium size and one short) and one short seta along lateral margin. Maxilla (Fig. 4 G) as illustrated. First thoracic endopod as illustrated (Fig. 4 C). Thoracic limbs well developed and similar in shape. Second thoracic endopod with robust basis; subquadrate preischium; ischium is more than half the length of merus, armed with fine setae; merus longest with setae along outer margin; carpopropodus slightly shorter than merus with setae along both margins; dactylus is more than half the length of carpopropodus with long and mid-length setae distally (Fig. 5 E). Sixth thoracic endopod generally similar in shape with 2 nd thoracic but with plumose setae on outer margins of basis and preischium; preischium triangular; and ischium is half the length of merus (Fig. 5 F).</p><p>Pleon (Fig. 4 A, H) slightly depressed dorsoventrally; first to fifth somites gradually increasing in length posteriorly, sixth somite longest, about 2 times as long as fifth one.</p><p>Pleopods in male (Fig. 4 A) second, third and fifth pleopods similar in general shape; fourth pleopod (Fig. 4 E) terminating into strong spine, extending beyond midlength of sixth somite, bearing rows of short setules near midlength, articulation between pleopodal plate and terminal spine indistinct.</p><p>Uropod (Figs 4 H, 5 D) extending distinctly beyond end of telson. Exopod of uropod narrow, truncate distally, lateral margin without seta, distal margins armed with numerous long setae (Fig. 5 D). Endopod of uropod narrow, distinctly longer than exopod, armed with numerous long setae on lateral and mesial margins; sutures strongly developed, giving an almost segmented appearance; statocyst present (Fig. 5 D). Telson (Fig. 5 D) subtriangular, width distinctly longer than length, armed with two distal spines.</p><p>Female. Similar to male, except for the following differences: body stouter and more robust in lateral view (Fig. 3), due to the presence of a well-developed marsupium; thoracic region deeper and broader than in male; brood pouch conspicuous, occupying much of the ventrolateral thoracic region. Antennules, antennae, eyes, and abdominal somites generally as in male; pleopod 4 (Fig. 5 B) rudimentary, short, unsegmented, bearing three to four short distal setae; not extending beyond the posterior margin of the somite.</p><p>Etymology.</p><p>The species epithet jetama is dedicated to Jetama Sdn. Bhd., in recognition of the company’s support and contribution to this research. Their funding was instrumental in facilitating the fieldwork component of the study and enabling the discovery and documentation of this species.</p><p>Distribution.</p><p>This species is known only from Turtle Tomb of Sipadan Island, Sabah, Malaysia.</p><p>Remarks.</p><p>Palaumysis jetama sp. nov., is readily distinguished from all currently known congeners by a unique combination of body size and antennular morphology. Adults exceed 2.5 mm in total length, placing the species among the larger members of the genus. Within this size class, P. jetama sp. nov. differs clearly from P. bahamensis Pesce &amp; Iliffe, 2002 in possessing a 5 - segmented inner flagellum of the antennule rather than a 2 - segmented flagellum with an extremely elongate distal article.</p><p>The new species further differs from the smaller congeners P. simonae Băcescu &amp; Iliffe, 1986, P. pilifera Hanamura &amp; Kase, 2003, and P. philippinensis Hanamura &amp; Kase, 2002 by its larger adult size (&gt; 2.5 mm versus &lt;2.5 mm). It is additionally separable from P. pilifera by the absence of fine hairs on the male fourth pleopod in P. jetama sp. nov. Palaumysis simonae differs in having a naked antennal scale, whereas P. philippinensis bears a terminal seta and several short lateral setae on the antennal scale, characters not observed in the new species.</p><p>Among the described congeners, Palaumysis jetama sp. nov. most closely resembles P. philippinensis . However, adult specimens of the new species differ from P. philippinensis by at least three characters: the length ratio of segments 1 and 2 of antennal scale (2:1 in P. jetama versus 1:4 in P. philippinensis); the thoracic exopods have more than 10 segments in P. jetama versus fewer than 7 in P. philippinensis); and the telson is broader than long in P. jetama versus longer than broad in P. philippinensis .</p><p>The discovery of P. jetama sp. nov. extends the known distribution of Palaumysis to Malaysian Borneo and adds a new record for the central Indo-West Pacific. With species now known from Palau, Japan, the Philippines, the Bahamas, and Malaysia, the genus shows a disjunct circumtropical distribution associated with marine cave habitats. This pattern is consistent with the broader biogeographic significance of marine caves as refugia for relictual crustacean lineages, although the historical processes underlying the present distribution of Palaumysis remain to be tested.</p></div>	https://treatment.plazi.org/id/E554878BBDF75D3198E8CF69A8E9892C	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.		Pensoft via Plazi	Azman, Abdul-Rahim;Sawamoto, Shozo;Ahmad-Zaki, Abu-Bakar	Azman, Abdul-Rahim, Sawamoto, Shozo, Ahmad-Zaki, Abu-Bakar (2026): Hidden in the dark: A new record and species of cave-dwelling Palaumysis (Crustacea, Mysidacea) from Sipadan Turtle Tomb, Malaysia, with identification keys to world species. ZooKeys 1284: 205-215, DOI: 10.3897/zookeys.1284.192633
