Glandulotiron spinipes Just 2022, sp. nov.
Creators: name: Just, Jean
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Malacostraca
Amphipoda
Synopiidae
Glandulotiron
Glandulotiron spinipes

description: Glandulotiron spinipes sp. nov.
(Figs 21–22)
Type fixation. Holotype, ♀.—Here designated.
Etymology. The species is named for the long row of robust setae along the anterior margin of the basis of gnathopod 2.
Material examined. Holotype, ♀, 9.0 mm. Australia, Victoria, Bass Strait, 30 km SSW of Warrnambool, 38˚38.12’S, 142˚35.00’E, 59 m, epibenthic sled, R. S. Wilson, 20 November 1981, RV Tangaroa, stn BSS 188, NMV J73751.
Paratypes. Same data as holotype, NMV J75152 (2 specimens). Australia, Tasmania, Central Bass Strait, 35 km N of Cape Wickham, King Island, 39˚13.36’S, 143˚55.36’E, 85 m, fine sand, S-M grab, R. Wilson, 23 November 1981, RV Tangaroa, stn BSS205, NMV J73726 (1 ♀, 2 ♂). Australia Victoria, Western Bass Strait, 15 km S of Cape Otway, 39˚00’S, 143˚32’E, 81 m, coarse shell, G.C.B. Poore, 8 October 1980, HMAS Kimbla, stn BSS50, NMV J73735 (1 ♀). Australia, Tasmania, Eastern Bass Strait, Flinders Island, 70 km N of North Point, 39˚05.12’S, 147˚56.36’E, 62 m, shelly sand, WHOI epibenthic sled, R. Wilson, 17 November 1981, RV Tangaroa, stn BSS172, NMV J73745 (1 ♀). Australia, Victoria, Central Bass Strait, 65 km S of Cape Schanck, 39˚08.18’S, 144˚43.54’E, 66 m, coarse sand, R. Wilson, 23 November 1981, RV Tangaroa, stn BSS201, NMV J73746 (1 ♀). Australia, Tasmania, Central Bass Strait, King Island, 35 km N of Cape Wickham, 39˚13.36’S, 143˚55.36’E, 85 m, fine sand, R. Wilson, 23 November 1981, RV Tangaroa, stn BSS205, NMV J73747 (3 ♀). Australia, Tasmania, Western Bass Strait, King Island, 59 km WNW of Cape Farewell, 39˚28’S, 143˚17’E, 103 m. coarse sand, G.C.B. Poore, 10 October 1980, HMAS Kimbla, stn BSS81, NMV J73748 (1 ovig. ♀). Australia, Tasmania, Eastern Bass Strait, Flinders Island, 70 km N of North Point, 39˚05.12’S, 147˚56.36’E, 62 m, shelly sand, R. Wilson, 17 November 1981, RV Tangaroa, stn BSS172, NMV J73749 (1 ♀). Australia, Victoria, Western Bass Strait, 31 km SSW of Cape Otway, 39˚08’S, 143˚24’E, 77 m, medium sand, G.C.B. Poore, 8 October 1980, HMAS Kimbla, stn BSS56, NMV J73750 (2 ♀). Australia, Tasmania, Eastern Bass Strait, Flinders Island, 94 km NE of North Point, 38˚53.42’S, 147˚55.06’E, 71 m, medium sand, R. Wilson, 17 November 1981, RV Tangaroa, stn BSS171, NMV J73752 (2 ♂, 10 ♀). Australia, Central Bass Strait, 35 km WNW of West Point, Tasmania, 40˚47.4’S 144˚17.7’E, 99 m, coarse sand, M. Gomon et al., 2 February 1981, FRV Hai Kung, stn BSS125, NMV J75153 (1 ♀). Australia, Tasman Sea, 34°17’05”S, 168°21’30”E, 780–800 m, beam trawl, P.B. Berents, 02 Jun 2003, RV Tangaroa, stn TAN0308/141, AM P72854 (11 specimens). Australia, Tasmania, Eastern Bass Strait, Flinders Island, 94 km NE of North Point, 38˚53.42’S, 147˚55.06’E, 71 m, medium sand, R. Wilson, 17 November 1981, RV Tangaroa, stn BSS171, NHMD 916112 (5 specimens).
Description (female). Rostrum with rounded apex. Interantennal lobes broad, truncate, lower corner more angular than upper corner. Accessory eye composed of 6 ommatidia in crescent.
Mouthparts. Maxilla 1 with 5 short, blunt, bi- to 3-cusped apical setal spines and a single more slender serrate one in lateral corner; outer plate with row of 9 denticulate setal spines. Mouthparts otherwise normal.
Antennae 1 as long as pereonite 1 to half of 5 combined along dorsum, peduncle article 2 about half as long as 1, article 3 2/3 length of 2, article 1 with single penicillate seta dorsodistally and 2 medioventrally; flagellum as long as peduncle, of 8 articles, assessory flagellum of 4 articles, both sparsely setulose. Antenna 2 as long as pereonites 1–6 combined along dorsum, peduncular article 4 the longest, flagellum of 6+ articles, articles 1–6 with single slender robust seta distally, antenna otherwise sparsely setulose.
Coxal plates 1–3 distally fringed with setae of varying length, without brim of fine setules, plate 4 without setae.
Gnathopods 1 and 2 propodus slightly less than half as long as carpus; carpus with scattered setae on anterior margin, 10–12 groups of unequally long setae along posterior margin; dactylus with unguis 0.4 length of propodus, nearly straight. Gnathopod 1 basis with long and short anterior and posterior setae; propodus with row of 4–5, pectinate setae on posterior margin. Gnathopod 2 basis less setose, with row of 12 robust setae on anterodistal margin.
Pereopods 3–4 basis with a few long anterior and posterior setae.
Pereopods 5–7 basis with posterodistal rounded projection, pereopod 5 broadest distally, pereopod 6 broadest in middle, pereopod 7 broadest proximally with large rounded posterior projection; posterior margin crenulate in 7; propodus of pereopod 5 as long as carpus, of pereopod 6 3/4 length of carpus, of pereopod 7 half-length of carpus. Pereopod 6 with single and pereopod 7 with row of long setae submarginally on medial surface of basis.
Uropod 1 peduncle reaching about 2/3 along peduncle of uropod 2 peduncle, rami of equal length, about 2/3 length of peduncle, reaching to end of rami of uropod 2; both uropods reaching barely halfway along outer ramus of uropod 3. Uropod 2 rami of equal length. Uropod 3 peduncle about 3/4 length of outer ramus, outer ramus basal article with row of 7 robust setae dorsolaterally, and 6 very small robust setae ventrolaterally, small second article with 3 dorsal robust setae; inner ramus reaching to 9/10 of basal article of outer ramus, dorsal margin with row of long setae and 2 robust setae, apex with 3 robust setae.
Telson. Reaching 2/3 along outer ramus of uropod 3, length/width 2.0, with row of 4 robust setae, small simple setae and 1 plumose seta dorsally on each lobe, apices with 1 long and 1 short robust seta.
Male. Similar to female but antenna 1 flagellum article 1 very long and slender, with medioventral single-field callynophore.
Size. Largest ♀, 9.0 mm. Largest ♂, 8.5 mm.
Distribution. Australia, Bass Strait; 59– 103 m.
description: Published as part of 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), pp. 1-89 in Zootaxa 5139 (1) on pages 39-42, DOI: 10.11646/zootaxa.5139.1.1, http://zenodo.org/record/6572023