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 (2021-08-23 02:57:01, last updated by Plazi 2023-11-04 11:13:20)

scientific name

Clepidecrella abeona
status

sp. nov.

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.

Gallery Image

FIGURE 1. Clepidecrella abeona sp. nov. Holotype female, AM P.68999, east of Cape Naturaliste, Tasmania.

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FIGURE 2. Clepidecrella abeona sp. nov. Holotype female, AM P.68999; paratype male, AM P.69000, east of Cape Naturaliste, Tasmania. Scales represent 0.1 mm.

Gallery Image

FIGURE 3. Clepidecrella abeona sp. nov. Holotype female, AM P.68999, east of Cape Naturaliste, Tasmania. Scales represent 0.2 mm.

T

Tavera, Department of Geology and Geophysics