Alexandrella dentata Chevreux, 1912

d’Acoz, Cédric d’Udekem & Verheye, Marie L., 2017, Epimeria of the Southern Ocean with notes on their relatives (Crustacea, Amphipoda, Eusiroidea), European Journal of Taxonomy 359, pp. 1-553 : 172

Alexandrella dentata Chevreux, 1912

Alexandrella dentata Chevreux, 1912: 213 .

Alexandrella dentata – Chevreux 1913: 134, figs 31–33. — J.L. Barnard 1958: 133; 1969: 452, fig. 163a. — Holman & Watling 1983: 37–39, fig. 4. — J.L. Barnard & Karaman 1991: 704, fig. 127C. — Serejo 2014: 139, in part (key).

non Alexandrella dentata – Berge & Vader 2005a: 1332–1335, figs 2, 3 (= A. mixta s. lat.). — J.L. Barnard

1961: 77, fig. 46. (= A. subchelata ).

Distribution

Bellingshausen Sea: Alexander Island, 297 m ( Chevreux 1913).

Biology

The holotype of A. dentata was found inside a sponge ( Chevreux 1913).

Remarks

Chevreux (1913) explicitly described and illustrated a tooth on the side of each segments of the pereion of the holotype of Alexandrella dentata , hence the name of the species. They were not reproduced, however, in the figures of J.L. Barnard (1969) and J.L. Barnard & Karaman (1991), which were copied from Chevreux (1913). Neither are they mentioned in the account of the holotype of A. dentata by Holman & Watling (1983), who only studied the appendages and not the body. Berge & Vader (2005a) also did not mention these teeth on their specimens and put Alexandrella mixta , which is not supposed to have such teeth, in synonymy with A. dentata . The specimens of Berge & Vader (2005a) are without lateral teeth, which indicates that the species is not A. dentata . The presence or absence of these lateral teeth is here considered as a species level character distinguishing A. mixta from A. dentata . A. mixta has been recorded in widely separate localities and across a wide bathymetric range. Moreover, small differences exist between the various descriptions and illustrations. Therefore, A. mixta might be a species complex.