Africorchestia skoogi ( Stebbing, 1922 )

Lowry, James K. & Coleman, Charles Oliver, 2011, Africorchestia a new genus of sand-hoppers (Crustacea: Amphipoda: Talitridae) from western Africa and south-western Europe, Zootaxa 2825, pp. 55-68 : 60

Africorchestia skoogi ( Stebbing, 1922)

( Fig. 3 , 4 )

Talorchestia skoogi Stebbing, 1922: 8 , pl. 5. ― Griffiths, 1976: 32, fig. 12. ― Coleman & Leistikow, 2001: 2, figs 1–6.

Types. Neotype, male, ZMB 27 315.

Type locality. Skeleton Coast Park, Namibia (17°27’05”S 11°44’35”E).

Diagnosis. Based on male. Gnathopod 2 propodus subrectangular, palm extremely acute, slightly convex, extending along entire posterior margin, with rounded protuberance near dactylar hinge, with small distal sinus, with single row of robust setae along entire margin, with large posteroproximal proximal spine; dactylus slightly longer than palm. Pereopods 6–7 much longer than pereopods 3–5. Pereopod 6 longer than pereopod 7; basis broadly expanded posteriorly. Pleonite 1 with 1 posterodistal ridge with lobe-like protrusions on both sides. Pleonite 2 with 2 ridges, anterior ridge continuous, posterior ridge with lobe-like extensions similar to pleonite 1. Pleonite 3 with 2 ridges, anterior similar to that of pleonite 2, posterior ridge with lobe-like protrusions or continuous in some specimens. Uropod 3 ramus longer than peduncle, 5.6 x as long as broad. Telson entire, apically truncated, with about 10 apical robust setae on each side.

Remarks. See remarks under A. quadrispinosa .

Distribution. Angola. Cabo Negro, 15°40.6’S 11°55.6’E ( Griffiths 1976); Tombwe, 15°48.1’S 11°50.9’E (as Port Alexander, Stebbing 1922). Namibia. Skeleton Coast Park, 17°27’05”S 11°44’35”E ( Coleman & Leistikow 2001).

Figures

FIGURE 3. Africorchestia skoogi (Stebbing, 1922), habitus, male and female. Skeleton Coast, Namibia (after Coleman & Leistikow 2001).

FIGURE 4. Africorchestia skoogi (Stebbing, 1922), male. Skeleton Coast, Namibia (after Coleman & Leistikow 2001).