Clepidecrella colliboi, Lowry & Stoddart, 2010

Lowry, J. K. & Stoddart, H. E., 2010, Kergueleniidae fam. nov. (Crustacea: Amphipoda: Lysianassoidea) in Australian waters, Zootaxa 2564 (1), pp. 1-30 : 9-10

publication ID	https://doi.org/ 10.11646/zootaxa.2329.1.3
DOI	https://doi.org/10.5281/zenodo.5308666
persistent identifier	https://treatment.plazi.org/id/F936C54E-0A5B-FFE6-8388-F696FC339B12
treatment provided by	Felipe
scientific name	Clepidecrella colliboi
status	sp. nov.

Treatment

Clepidecrella colliboi View in CoL sp. nov.

( Figs 7–9 View FIGURE 7 View FIGURE 8 View FIGURE 9 )

Type material. HOLOTYPE, female, 3.0 mm, ovigerous (2 eggs), MV J59386 View Materials , off Freycinet Peninsula , Tasmania, Australia, 41°58.60'S 148°38.80'E, 500 m, coarse shell, WHOI epibenthic sled, 27 July 1986, M.F. Gomon et al., RV Franklin, stn SLOPE 47 GoogleMaps . PARATYPES: 1 specimen, MV J61496 View Materials , same data as holotype GoogleMaps ; 2 specimens, AM P.81163 and 2 specimens, MV J61497 View Materials , south of Point Hicks , Victoria, Australia, 38°21.90'S 149°20.00'E, 1000 m, WHOI epibenthic sled, 23 July 1986, G.C.B. Poore et al., RV Franklin, stn SLOPE 32 GoogleMaps ; 3 males, MV J61498 View Materials , south of Point Hicks , Victoria, Australia, 38°19.60'S 149°24.30'E, 930 m, rock, rubble, clay, sand, biogenic sediment, WHOI epibenthic sled, 23 July 1986, M.F. Gomon et al., RV Franklin, stn SLOPE 33 GoogleMaps .

Type locality. Off Freycinet Peninsula , Tasmania, Australia, 41°58.60'S 148°38.80'E, 500 m depth GoogleMaps .

Etymology. Named for the steamship Colliboi beached on Woolnorth Point, Tasmania in 1932.

Diagnostic description. Antenna 1 peduncular article 1 not or only slightly produced dorsodistally. Mandible incisor present; left lacinia mobilis absent; accessory spine row absent; molar absent. Maxilla 1 outer plate with 3 setal-teeth, most setal-teeth without cusps; palp 2-articulate. Maxilliped palp article 2 longer than broad, length 1.9 x breadth. Gnathopod 1 basis margins subparallel; ischium short, length 1.6 x breadth; carpus long, length 3 x breadth, longer than (1.5 x) propodus; propodus tapered distally, length 2.4 x breadth. Pereopods 3 and 4 propodus with short distal locking seta. Pereopod 5 basis expanded posteroventrally, with posteroventral lobe; merus moderately expanded posteriorly. Pereopod 7 basis with posteroventral lobe extending about halfway along merus; merus posteroventral lobe extending less than halfway along carpus. Pleonite 3 without dorsodistal boss. Epimeron 3 posteroventral corner narrowly rounded. Uropod 1 rami without robust setae. Uropod 3 uniramous; outer ramus 1-articulate. Telson longer than broad, length about 1.3 x breadth.

Male. Antenna 1 with strong 2-field callynophore.

Remarks. Clepidecrella cataraqui , C. colliboi and C. ira share the characters of left lacinia mobilis absent and maxilla 1 outer plate with only 3 setal-teeth. Clepidecrella colliboi can be distinguished from C. ira by the lack of robust setae on the rami of uropod 1 and the uniramous uropod 3. It can be distinguished from C. cataraqui by the presence of cusps on one tooth of maxilla 1 outer plate setal-teeth, the slightly tapered propodus of gnathopod 1, the presence of a posteroventral lobe on the basis of pereopod 7 and the longer than broad telson.

The ovigerous holotype female has an oostegite on pereopod 5 only.

Distribution. South-eastern Australia, in 500–1000 m depth.