Pselaphodes songxiaobini sp. nov.

(Figs 16A, 17)

Type material (5 exs). HOLOTYPE: ♁, CHINA: ‘ China: Xizang, near Bomi County, 2735 m, 29°52′21.95″N, 95°42′15.26″E, 12.iii.2017, X.-B. Song leg. [ϕḄMDǾḾR]’ (SNUC). PARATYPES: CHINA: 4♀♀, same label data as the holotype (SNUC).

Diagnosis of male. Length 2.92 mm; antennomere IX with large projection at apex, antennomere X with large projection at base; metaventral processes long and slender, expanded apically; protibia with distinct projection at apex; metacoxa with long curved ventral projection.

Description. Male (Fig. 16A). Body reddish brown, BL 2.92 mm. Head longer than wide, HL 0.63 mm, HW 0.57 mm; each eye composed of about 40 facets; with well-developed ocular canthus. Antennomeres IX–XI forming (Fig. 17A) distinct club, antennomere IX with large projection at apex, antennomere X with large projection at base. Pronotum (Fig. 17B) wider than long, PL 0.58 mm, PW 0.64 mm, angularly expanded at anterolateral margins. Elytra wider than long, EL 0.83 mm, EW 1.13 mm. Metaventral processes (Fig. 17C) long and slender, expanded apically. Protrochanter and profemur (Fig. 17D) simple; protibia (Fig. 17E) with distinct projection at apex; mesotrochanter and mesofemur (Fig. 17F) simple; metatrochanter (Fig. 17G) with long curved ventral projection.Abdomen broad at base and narrowed apically, AL 0.88 mm, AW 1.13 mm. Sternite IX (Fig. 17H) semi-membranous. Length of aedeagus (Figs 17 I–K) 0.57 mm;median lobe strongly asymmetric, parameres elongate and slender, endophallus composed of two elongate and slender sclerites.

Female. Each eye composed of about 32 facets; antennae and legs simple. Measurements: BL 3.10–3.13 mm, HL 0.68–0.71 mm, HW 0.59–0.60 mm, PL 0.63–0.65 mm, PW 0.60–0.62 mm, EL 0.78–0.80 mm, EW 0.82–1.23 mm, AL 0.96–1.02 mm, AW 1.32–1.34 mm.

Comparative notes. The new species is most similar to P. bomiensis Yin, Li & Zhao, 2011 in sharing a similar general structure of antennomeres IX–X, and angulate pronotal anterolateral corners. Males of these two species can be readily separated at first glance by the mesofemur lacking a row of long setae along the ventral margin in the new species, the relatively more elongate antennomere X, the different shapes of the spines/protuberances of the legs, and structures of the aedeagus.

Etymology. The new species is named after our friend Xiao-Bin Song, collector of the holotype.

Distribution. China: Xizang.