Otiothops naokii n. sp.

(Figs 3, 4)

Type material. BOLIVIA: Santa Cruz: holotype male, Concesión Forestal La Chonta, Prov. Guarayos, 15°42'42"S, 62°46'20"W, 26-30 October 2010, Amazonian forest with selective logging, pitfall trap, elev. 330 m, C. Grismado, M. R. Vacaflores, M. Pérez (CBF).

Etymology. The specific name is a patronym in honour of Kazuya Naoki, ornithologist of the Universidad Mayor de San Andrés (La Paz), in recognition of his fundamental contribution to the organization, logistics and success of the expedition to Bolivia in 2010.

Diagnosis. The male is very similar to that of O. kathiae in the shape of the embolus, which is distally flattened and widened, and with a flattened projection on the anteromedian margin (Fig. 4 a), but the embolus is more separated from the bulb in ventral view, and has a narrower base, with differently shaped distal elements (Figs 4 a–e).

Description. Male (holotype). Total length 4.20. Carapace 1.96 long, 1.30 wide. Femur I 1.24 long, 0.66 high. Posterior median eyes touching. Paturon with inconspicuous lateral ridge. Sclerotized portions of cephalothorax orange brown (Fig 3 a); abdominal scutum orange brown, darker at booklungs (Figs 3 a–c); unsclerotized portion of abdomen brown with numerous small, yellowish dots, background colour turning gradually lighter towards the venter (Figs 3 a–c). Pedipalpal femur not thickened, tibia smaller than bulb, nearly cup-shaped; bulb globose, embolus distally flattened, widened, with rounded, anteriorly directed flattened lobe near sperm outlet area (Fig. 4 a), distal retrolateral extension long, distal prolateral extension strongly folded (Figs 4 a-e).

Female. Unknown.

Distribution. Known only from the type locality.