Otostigmus greggi Chamberlin, 1944

(Figs 27–29)

Otostigmus greggi Chamberlin, 1944a, 180. New Hebrides [Vanuatu].

Material examined. FMNH. Holotype Otostigmus greggi, New Hebrides, Hog Harbor, Espirito Santo [Vanuatu]. 15 April 1928. (?) Corane Field Museum Expedition. Holotype.

Description. (Chamberlin’s (1944a) data in parentheses where relevant). Length 42.5mm (49). Antennal articles 21+20[r], the basal 2.2 glabrous. Forcipular coxosternal tooth-plates with 5+5 teeth, three principal ones and small medial and lateral subsidiary teeth (Fig. 27). Forcipular trochanteroprefemoral process with two medial denticles (Fig. 28)

Tergites without keels or spines, paramedian sutures complete from 5, marginate from 9. Sternite paramedian sutures not visible on anterior sternites, occupying anterior 33% on S10 and 44% on S18. Sternite of ultimate legbearing segment with sides converging only slightly, posterior margin slightly concave (Fig. 29).

Coxopleuron elongated with two apical and one subapical spine, one or two lateral and a dorsal spine (no spine on dorsal surface) (Fig. 29).

Leg 1 with a femoral spur, a tibial spur on legs 1–3, two tarsal spurs on legs 1–10 or 1–11, one on 11 or 12–20. Ultimate leg prefemoral spines, right leg with VL 4, VM 2, M 3 DM 2 CS1. The left (possibly regenerated) with only VL 2 [very small] VM 0, M 3, DM 2, CS 1.

Remarks. Chamberlin (1944a) described the coxopleuron of this species as “terminating in three spines; two lateral spines and none on dorsal surface” and so it should belong to the orientalis group. However a reexamination of the holotype has shown a dorsal spine to be present and so the species is a member of the rugulosus group of species. The specimen runs down to O. astenus (Kohlrausch, 1878) in Lewis’s (2010) key and agrees with his diagnosis. Otostigmus greggi is a junior subjective synonym of O. astenus.