Songius pseudohlavaci Yin and Li

Yin, Zi-Wei & Li, Li-Zhen, 2015, New and little known species of the genus Songius (Coleoptera: Staphylinidae: Pselaphinae) in China, Zootaxa 3905 (2), pp. 293-300 : 295-298

Songius pseudohlavaci Yin and Li , new species

Figs 1 B, 3

Type material (1 ♂). Holotype: CHINA: ♂, labeled ‘ China: Hunan Prov., Yongzhou City, Shuangpai County, Yangming Shan Nature Reserve [ca. 26°02–07’N, 111°53–59’E], 2004. x.02, Jian-Hua Huang leg.’ ( SNUC).

Description. Male ( Fig. 1 B). Length 2.38 mm, reddish brown, general form stout, dorsal surfaces of head, pronotum, elytra, and abdomen almost glabrous. Head ( Fig. 3 A) slightly longer than wide, rectangular, weakly broadened anteriorly, HL 0.55 mm, HW 0.49 mm. Each eye composed of about 60 facets. Antenna ( Fig. 3 B) moniliform, antennomeres XI largest, about three times as long as X. Pronotum ( Fig. 3 A) slightly wider than long, nearly trapezoidal, PL 0.50 mm, PW 0.56 mm, disc broadly impressed, median longitudinal sulcus shallow. Elytra wider than long, EL 0.82 mm, EW 1.07 mm, disc convex. Mesotrochanters and mesofemora each with tiny ventral spine, mesotibiae with small apical spur ( Fig. 3 C); metatrochanters with big spine on ventral margin ( Fig. 3 D). Abdomen slightly wider than elytra, and wider than long, AL 0.51 mm, AW 1.09 mm, rounded at apex. Aedeagus ( Fig. 3 E–F) length 0.54 mm, with broad ventral lobe; dorsal lobe expanded toward right, with serrate anterior margin.

Female. Unknown.

Comparative notes. The new species is most similar to S. hlavaci in sharing a similar habitus and the glabrous dorsal surface of the body. The two species can be separated primarily by the difference in aedeagal character (see the key above), and by their distribution.

Distribution. Central China: Hunan.

Biology. Unknown.

Etymology. The species epithet indicate the similarity of the new species to S. hlavaci .

Figures

FIGURE 1. Dorsal habitus of Songius species. A. S. kiwi, male. B. S. pseudohlavaci, male. Scales: 0.5 mm.

FIGURE 3. Diagnostic features of male Songius pseudohlavaci. A. Head and pronotum. B. Antenna. C. Mesotrochanter, mesofemur, and mesotibia. D. Metatrochanter and metafemur. E. Aedeagus, in dorsal view. F. Same, in ventral view. Scales: A, B = 0.5 mm; C, D = 0.3 mm; E, F = 0.2 mm.