Iphinoe africana Zimmer, 1908

Bochert, Ralf & Zettler, Michael L., 2011, Cumacea from the continental shelf of Angola and Namibia with descriptions of new species, Zootaxa 2978, pp. 1-33 : 22-23

Iphinoe africana Zimmer, 1908

Fig. 17

Iphinoe africana Zimmer, 1908: 163 –164, plate 1, figs. 17–33; Fage, 1951: 4, fig. 1; Jones, 1955: 288, fig. 5, 1956: 202, fig. 12; Day, 1978: 209, figs. 19–20; Mühlenhardt-Siegel, 1996: 119 –121, plate 1, figs. 11–17.

Material examined. 1 juvenile, 5.2 mm (St. 3: dredge sampling; 7°49.947´S, 13°02.992´E); 1 female (St. 6: grab sampling; 9°26.000´S, 12°59.974´E); 1 male, 8.0 mm; 1 female (St. 8: grab sampling; 12°05.273´S, 13°42.047´E); 1 male, 2 females (St. 9: grab sampling; 13°56.040´S, 12°23.510´E); 1 preadult male; 1 female, 8.1 mm (St. 13: grab sampling; 15°00.048´S, 12°07.685´E); 9 males; 22 females (St. 17: grab sampling; 17°00.124´S, 11°41.719´E); 1 juvenile (St. 18: grab sampling; 17°15.801´S, 11°40.997´E); 1 adult male, 10.5 mm; 2 preadult male; 1 female (St. 19: grab sampling; 17°16.047´S, 11°43.441´E); 1 preadult male; 2 females (St. 20: grab sampling; 17°16.052´S, 11°41.234´E); 1 adult male; 1 preadult male; 6 females (St. 21: grab sampling; 17°17.349´S, 11°42.624´E); 1 female (St. 22: grab sampling; 17°18.965´S, 11°36.088´E); 1 female; 2 juveniles (St. 23: grab sampling; 17°18.946´S, 11°43.389´E); 12 males and females (St. 24: grab and dredge sampling; 17°20.334´S, 11°42.216´E); 1 female (St. 25: grab sampling; 17°20.345´S, 11°39.531´E); 6 males and females, 1 juvenile (St. 26: grab and dredge sampling; 17°22.050´S, 11°42.233´E); 1 preadult male (St. 27: grab sampling; 17°22.094´S, 11°39.567´E); 1 male (St. 28: dredge sampling; 17°23.415´S, 11°36.126´E); 7 males; 13 females (St. 29: grab sampling; 17°23.415´S, 11°43.432´E); 1 female (St. 31: grab sampling; 17°35.972´S, 11°41.995´E); 1 male; 1 female (St. 32: grab sampling; 17°57.633´S, 11°46.104´E); 2 females; 1 juvenile, 3.7 mm (St. 34: grab and dredge sampling; 18°23.116´S, 11°55.289´E).

Remarks. Specimens belong to Iphinoe africana constituted about 30 % of the collected material. The differentiation from the very similar species Iphinoe brevipes Hansen, 1895 and Iphinoe stebbingi Jones, 1956 was discussed in this africana – brevipes – stebbingi group ( Jones, 1956, Day 1978; Mühlenhardt-Siegel, 1996). We observed considerable variations in our individuals associated with growth and sexual dimorphism for several features. Concretely, the lengths of the different articles of pereopod 1 and pereopod 2 and numbers of teeth on telsonic somite. The ratio of carapace length to carapace height ranged from 2.25 to 2.75, the basis of pereopod 1 could be longer than the rest of the limb and the basis of pereopod 2 could be nearly as long as broad ( Fig. 17). According to Day (1978) the distribution of I. brevipes is limited from North to 5°S and I. stebbingi is found in South Africa.

Distribution. South West Africa from Angola to Cape Point ( South Africa), 0–130 m