Clepidecrella abeona, 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 : 3-6

publication ID	https://doi.org/ 10.11646/zootaxa.2329.1.3
DOI	https://doi.org/10.5281/zenodo.5308658
persistent identifier	https://treatment.plazi.org/id/F936C54E-0A51-FFEA-8388-F403FC3D9B89
treatment provided by	Felipe
scientific name	Clepidecrella abeona
status	sp. nov.

Treatment

Clepidecrella abeona View in CoL sp. nov.

( Figs 1–3 View FIGURE 1 View FIGURE 2 View FIGURE 3 )

Type material. HOLOTYPE, female, 6.0 mm, AM P.68999, east of Cape Naturaliste , Tasmania, Australia, 40°45.94’S 149°01.62’E to 40°46.54’S 149°00.27’E, 2400–2500 m, mud, clay, 10 December 1986, R. T. Springthorpe, RV Franklin stn FR1086-04 GoogleMaps . PARATYPES: male, 6.0 mm, AM P.69000 and 2 specimens, AM P.69001, type locality.

Type locality. East of Cape Naturaliste , Tasmania, Australia, 40°45.94’S 149°01.62’E GoogleMaps to 40°46.54’S 149°00.27’E, 2400–2500 m depth.

Etymology. Named for the barque Abeona , wrecked off King Island, Bass Strait in the late 1800’s.

Diagnostic description. Antenna 1 peduncular article 1 not or only slightly produced dorsodistally. Mandible incisor present; left lacinia mobilis present; accessory spine row absent; molar absent. Maxilla 1 outer plate with 6 setal-teeth, most setal-teeth cuspidate; palp 2-articulate. Maxilliped palp article 2 longer than broad, length 1.5 x breadth. Gnathopod 1 basis expanded midanteriorly; ischium short, length 1.65 x breadth; carpus long, length 3.1 x breadth, longer than (1.7 x) propodus; propodus tapered distally, length 2.3 x breadth. Pereopods 3 and 4 propodus with short distal locking seta. Pereopod 5 basis slightly expanded posteriorly, with posteroventral lobe; merus moderately expanded posteriorly. Pereopod 7 basis with posteroventral lobe not extending much beyond ischium; merus posteroventral lobe extending less than halfway along carpus. Pleonite 3 without dorsodistal boss. Epimeron 3 posteroventral corner narrowly rounded. Uropod 1 rami with robust setae. Uropod 3 biramous; inner ramus about 1.9 x outer ramus; outer ramus 2-articulate. Telson shorter than broad, length about 0.9 x breadth.

Male. Antenna 1 with strong 2-field callynophore.

Remarks. Clepidecrella abeona is similar to the two previously described species, C. cabinda and C. tropicalis , in having a lacinia mobilis on the left mandible and 6 setal-teeth on maxilla 1 outer plate. It differs from these two species in not having a molar and having a narrowly rounded posteroventral corner on epimeron 3. It differs from all other Clepidecrella species in having a gnathopod 1 basis expanded midanteriorly.

The holotype female has long oostegite buds on gnathopod 2 and pereopods 3 to 5. It is the only species we have seen with a full complement of oostegites.

Distribution. South-eastern Australia, in 2400–2500 m depth.