Otostigmus nemorensis Silvestri 1895

Otostigmus nemorensis Silvestri, 1895

Otostigma nemorense Silvestri, 1895, 716. Sumatra.

Otostigmus nemorensis: Kraepelin, 1903, 119, Fig. 56. Sumatra, Java. O. (O.) nemorensis: Attems, 1930, 142.

Description. Type material not examined. (Silvestri’s data augmented from Kraepelin (1903) the latter in parentheses). Length 44 mm. 21–23 antennal articles, (the basal 2.33 glabrous). 3+3 (or 4+4) forcipular coxosternal teeth. Tergites (without keels or spinules), with paramedian sutures from 4 (5), marginate from 7 (8). Sternites with short (anterior) paramedian sutures and with a posterior median depression. Sternite of ultimate leg-bearing segment subquadrate with a median sulcus (and posterior margin straight). Coxopleural process with two apical and one lateral spine. Legs 1–21 with a tarsal spur. (Two tarsal spurs on legs 1–4, 5–21 with one). Ultimate leg prefemoral spines 5, 3, 3, 3 (VL 4, VM 2, M 2–3, DM 1–2, CS 1).

Remarks. Kraepelin did not examine the type material presumably adding to Silvestri’s data from his Javan material. Attems (1930) repeated Kraepelin’s description except that he stated tergites with spinules (dornstrichelig), probably an error. O. nemorensis is very similar to O. sucki and Kraepelin stated that O. sucki was in many ways a spine-streaked O. nemorensis but I consider that the available data are not sufficient for a definite decision to be made as to its status and therefore regard it, for the present, as a nomen dubium.