Glandulotiron pilocaputis, Just, 2022

Just, Jean, 2022, Tirons of the world: a review of ‘ tironid’ amphipods, description of new genera and species, and establishment of a new subfamily Tironinae Stebbing, 1906 stat. nov. (Crustacea, Synopiidae), Zootaxa 5139 (1), pp. 1-89 : 28-29

publication ID	https://doi.org/ 10.11646/zootaxa.5139.1.1
publication LSID	lsid:zoobank.org:pub:145CB6F5-2EA8-40B0-9CCA-3E942AA4A5B9
DOI	https://doi.org/10.5281/zenodo.6827535
persistent identifier	https://treatment.plazi.org/id/03BF0417-FFCA-FF0D-FF1A-8A97E458F8D0
treatment provided by	Plazi
scientific name	Glandulotiron pilocaputis
status	sp. nov.

Treatment

Glandulotiron pilocaputis View in CoL sp. nov.

( Figs 14–16 View FIGURE 14 View FIGURE 15 View FIGURE 16 )

Type fixation. Holotype, ♀.—Here designated.

Etymology. The species is named for its hairy (pilosus) head (caput).

Material examined. Holotype, ♀, 6.3 mm. Western Australia, Northwest Shelf , between Dampier and Port Hedland, 19˚56.1’S, 117˚53.9’E, 43 m, sand, 26 October 1983, CSIRO stn 05.83.B2, WAM C76566.

Paratypes. Australia, Northwest Shelf , between Dampier and Port Hedland, sand and gravel, CSIRO stn 3.83. B8.G. R5 , WAM C54935 (2 specimens) . Australia, Northwest Shelf , between Dampier and Port Hedland, CSIRO stn 03.83.B8.G. R6 , WAM C54936 (1 ♀) . Australia, Northwest Shelf between Dampier and Port Hedland, CSIRO 04.83 View Materials . B13.G, WAM C54937 (1 specimen) . Australia, Northwest Shelf , between Dampier and Port Hedland, CSIRO stn 04.83.B3.G, WAM C54938 (1 specimen) . Australia, Northwest Shelf , between Dampier and Port Hedland, CSIRO stn 04.83.B8.G, WAM C54939 (1 specimen). Western Australia, Northwest Shelf, between Dampier and Port Hedland, 19˚56.54’S, 117˚52.48’E, 44 m, 25 June 83, CSIRO stn 03.83.B2.G, NMV J73784 View Materials (1 juvenile). Western Australia, Northwest Shelf, between Dampier and Port Hedland, 19˚50’S, 117˚53’E, G. Poore, NWA-9, CSIRO, NMV J73818 View Materials (9 specimens). Western Australia, Northwest Shelf , between Dampier and Port Hedland , 19˚38’S, 18˚05’E, G. Poore , NWA-56, CSIRO, NMV J73819 View Materials (6 specimens) . Australia, Northwest Shelf, between Dampier and Port Hedland, 20˚20’S, 115˚59’E, G. Poore , stn NWA-38, NMV J73820 View Materials (15 specimens) . Australia, Northwest Shelf, between Dampier and Port Hedland , 20˚20’S, 115˚59’ E, G. Poore, NWA-38, NHMD 916109 (3 specimens) . Australia, Northwest Shelf , between Dampier and Port Hedland, 19˚55.54’S, 117˚54.12’E, 22 April 1983, CSIRO stn 04.83.B2.G, NMV J73821 View Materials (4 specimens) . Australia, Northwest Shelf , between Dampier and Port Hedland, 19˚56.9’S, 117˚53.5’E, 43 m, 18 February 1983, CSIRO stn 01/83/B2/G, NMV J73822 View Materials (1 specimen) . Australia, Northwest Shelf , between Dampier and Port Hedland, 19˚04.8’S, 118˚50.7’E, 84 m, CSIRO stn 05.83.B2, NMV J73823 View Materials (2 specimens) . Australia, Northwest Shelf , between Dampier and Port Hedland, 19˚04.8’S, 118˚50.7’E, 84 m, grab, CSIRO stn 05.83.B2, NMV J73824 View Materials (2 specimens) . Australia, Northwest Shelf , between Dampier and Port Hedland, 19˚29.36’S, 118˚52.12’E, CSIRO stn 03.83.B8, NMV J73826 View Materials (3 specimens) . Australia, Northwest Shelf , between Dampier and Port Hedland, 19˚29.36’S 118˚52.12’E, CSIRO stn 03.83.B8.G, NMV J73827 View Materials (1 specimen) . Australia, Western Australia, Northwest Shelf , between Dampier and Port Hedland, 19˚55.12’S, 117˚55.06’, 43 m, sand, gravel, CSIRO 03.83 View Materials . B3.G, NMV J73828 View Materials (1 specimen) . Australia, Northwest Shelf between Dampier and Port Hedland, 19˚28.18’S, 118˚55.12’E, 37 m, CSIRO stn 04.83.B9.G, NMV J73829 View Materials (♂ A) . Australia, Western Australia, Northwest Shelf , between Dampier and Port Hedland, stns NWA 273–275, 26 October 1983 NMV J73830 View Materials (1 specimen) .

Description (female). Head dorsal surface with long, thin setae. Rostrum acute, apex blunt. Interantennal lobes broad, truncate with equal-sized rounded corners. Accessory eye composed of 4 ommatidia, 3 appressed anteriorly and 1 separate more posteriorly;.

Mouthparts. Maxilla 1 palp with 5 short bi-dentate robust setae and single lateral elongate, serrate robust seta; outer plate with row of 9 denticulate robust setae. Mouthparts otherwise normal.

Antennae 1 as long as pereonite 1–5 and half of 6 combined along dorsum, peduncle article 2 about three quarter length of 1, article 3 half-length of 2, article 1 with single penicillate seta ventrally in posterior half; flagellum as long as peduncle, of 7 articles, assessory flagellum of 4 articles. Antenna 2 as long as pereonites 1–6 and most of 7 combined along dorsum, peduncular article 4 the longest, flagellum of 5 articles, articles 2–5 with single slender robust seta distally, otherwise sparsely setulose.

Coxal plates 1–4 rounded apex fringed with some long setae and dense row of fine setules.

Gnathopods 1 and 2 carpus both with scattered setae on anterior margin, 7–8 groups of unequally long setae along posterior margin. Gnathopod 1 propodus with 7–8 strong, pectinate robust setae on posterior margin. Gnathopod 2 propodus with a few scattered simple setae.

Pereopods 3–4 propodus with long, plumose seta anterodistally.

Pereopods 5–7 basis with posterodistal rounded projection. Pereopods 5 and 6 basis broadest distally. Pereopod 7 broadest proximally, posterior margin slightly sinuous, posteroproximal expansion rounded angular. Pereopods 7 with long setae in submarginal row on medial surface.

Uropod 1 peduncle reaching just beyond uropod 2 peduncle, rami of equal length, as long as peduncle, with a few small robust setae. Uropod 2 peduncle with about 11 glandular openings ventrolaterally, and at least 3 on adjacent urosomite 2, outer ramus about 4/5 length of inner ramus, rami generally reaching to middle of uropod 3 outer ramus. Uropod 3 peduncle about 2/3 length of rami, with row of about 7 glandular openings ventrolaterally, rami elongate oval, reaching beyond apex of telson, outer ramus article 1 with row of 8 robust setae dorsolaterally, and 6 small robust setae ventrolaterally, small second article with 3 dorsal robust setae; inner ramus reaching to about end of basal article of outer ramus, dorsolateral margin with row of long setae, apex with 3 robust setae.

Telson. Reaching 2/3 along outer ramus of uropod 3, length/width 2.2, each lobe with dorsal row of 4 robust setae, slender simple setae along lateral margins, and single apical robust seta.

Male. Generally as female but differing as follows: antenna 1 peduncle article 1 with 1 large and 3 small brush setae ventrally and 2 large ones dorsally; flagellum article 1 with ventral row of many long aestetascs in single field medioventral callynophore; posterior flange of basis of pereopod 7 broader. Uropods and telson as female although uropod 2 rami are slightly longer in relation to uropod 1.

Size. Largest ♀, 6.9 mm. Largest ♂, 5.4 mm.

Distribution. Northern Western Australia, 37– 84 m.