Lathrobium (Lathrobium) acutissimum Peng, Zhong, Li-Zhen Li & Mei-Jun Zhao 2012

Measurements and ratios:BL 8.12–10.00, FL 3.78–4.11, HL 1.18–1.26, HW 1.26–1.31, PL 1.52–1.63, PW 1.30–1.41, EL 0.98–1.05, HL/HW 0.93–0.96, HW/PW 0.94–0.97, HL/PL 0.76–0.79, PL/PW 1.16–1.17, EL/PL 0.64–0.67. Habitus as in Fig. 1A. Body brown with paler apex, legs brown to light brown, antennae brown to reddish brown. Head subquadrate (HL/HW 0.93–0.96); punctation coarse and dense; interstices with shallow and netlike microsculpture; eyes small, approximately 1/5–1/4 of length of postocular region in dorsal view. Pronotum nearly parallel-sided; punctation sparser than that of head; impunctate midline narrow; interstices shining without microsculpture. Elytra with punctation denser than that of pronotum and well defined; hind wings reduced. Abdomen with dense punctation; interstices with very shallow, transversely striate microsculpture. Male. Sternite VII (Fig. 2A) with short, darkish setae in U-shaped posterio-median impression; sternite VIII (Fig. 2B) with triangular, symmetrical emargination and short, darkish setae in shallow impression; sternite IX (Fig. 2C) long and nearly symmetrical; aedeagus (Fig. 2D, 2E) with very slender, ventral process. Female. Posterior margin of tergite VIII (Fig. 2F) somewhat convex; sternite VIII (Fig. 2G) slightly longer than that of male, posterior margin broadly convex; tergite X (Fig. 2H) not acute basally and not reaching anterior margin of tergite IX (Fig. 2H).

Southwest China: Sichuan.