Odiomaris pilosus (A. Milne-Edwards, 1873)

D., Guinot & de, Mazancourt V., 2020, A new freshwater crab of the family Hymenosomatidae MacLeay, 1838 from New Caledonia (Crustacea, Decapoda, Brachyura) and an updated review of the hymenosomatid fauna of New Caledonia, European Journal of Taxonomy 671 (671), pp. 1-29 : 18

Odiomaris pilosus (A. Milne-Edwards, 1873)

Figs 6–7

Characterised by numerous thin, stiff spinules on carapace margins, rostrum, pterygostomial regions, walking legs and chelipeds, is the largest freshwater hymenosomatid crab known ( Ng & Richer de Forges 1996: 6, figs 5–7; 2007: 317; Guinot & Richer de Forges 1997: 460, figs 1a–d, 2a–f; Richer de Forges et al. 1997: 234; Juncker & Poupin 2009: 11, pl. 5: two photos; Poupin 2010: 59; Davie et al. 2015a: fig. 71-2.1.e; 2015b: 947). According to Richer de Forges et al. (1997: 234), the species is common in New Caledonian rivers from the estuary inland for several kilometres, in shallow freshwaters, under or between rocks in rivers with rapid currents (G. Marquet, pers. com.); in some drainages, it is a dominant species ( Marquet et al. 2003: 108, fig. p. 109).

Figures

Fig. 6. Odiomaris pilosus A. Milne-Edwards, 1873, living specimens. A. Collected from the river Hiit (North Province, Hienghène township). B. Collected from the Baie Nord creek (South Province, Mont- Dore township). Credit: Nicolas Charpin – Photographies Vies d’Ô douce.

Fig. 7. Odiomaris pilosus A. Milne-Edwards, 1873, syntype, ♂, New Caledonia, freshwater, B. Balansa leg. (RMNH D 32). A. Ventral anterior part. B. G1 (after Holthuis 1968: fig. 3a–b). Abbreviations: a1 = antennule, with folded second article; a2 = antenna; e = epistome: p.k. = postorbital knobs; r = rostrum.