Labomimus medogensis, Zhang & Li & Yin, 2019

Zhang, Yu-Qing, Li, Li-Zhen & Yin, Zi-Wei, 2019, Fifteen new species and a new country record of Labomimus Sharp from China, with a checklist of world species (Coleoptera: Staphylinidae: Pselaphinae), Zootaxa 4554 (2), pp. 497-531 : 516-517

Labomimus medogensis sp. nov.

( Figs. 13B , 15 )

Type material ( 1 ♂) Holotype: CHINA: ♂: ‘ China : Xizang, Medog County (墨脱县), 1200 m, 30.vii.2014, Bi- Wen Xuan leg.’ ( SNUC)

Diagnosis of male. Length over 4.0 mm; head with line of golden pubescence at lateral margins; antennomeres IX–XI enlarged, antennomere IX with small process at apex; metaventral processes short; protrochanter with thin ventral spine, profemur with broad, triangular ventral spine, protibia with blunt apical spine; mesotrochanter with distinct ventral spine, mesotibia with small apical spine; metatibia with large apical spine; aedeagus strongly asymmetric, with median lobe distinctly broadened at apex.

Description. Male ( Fig. 13B ). Length 4.03 mm. Head longer than wide, HL 0.81 mm, HW 0.74 mm, lateral margins of head line of golden pubescence; eyes prominent, each composed of about 42 facets. Antenna with scape about 2.9 times as long as wide, antennomeres II–VIII more or less elongate, antennomere IX ( Fig. 15A ) strongly expanded at apical third, with small process at apex, antennomeres X–XI unmodified. Pronotum ( Fig. 15B ) longer than wide, PL 0.81 mm, PW 0.75 mm, sides moderately angulate at apical third. Elytra much broader than long, EL 1.03 mm, EW 1.37 mm. Metaventral processes ( Fig. 15C ) short, narrowing at apex in lateral view. Protrochanter ( Fig. 15D ) with thin ventral spine, profemur with large, broad ventral spine, protibia ( Fig. 15E ) with triangular spine at apex; mesotrochanter ( Fig. 15F ) with distinct ventral spine, mesofemur strongly expanded ventrally at middle, mesotibia ( Fig. 15G ) with small but distinct tubercle at apex; metacoxa, metatrochanter, and metafemur ( Fig. 15H ) simple, metatibia ( Fig. 15I ) with blunt protuberance at apex. Abdomen broad at base and narrowed posteriorly, AL 1.37 mm, AW 1.40 mm; tergite IV longest, more than twice as long as tergite V; sternite IX as in Fig. 15J . Length of aedeagus ( Fig. 15 K–M) 0.68 mm; broad median lobe asymmetric; elongate parameres broadened dorso-ventrally.

Female. Unknown.

Distribution. China: Xizang.

Etymology. The new species is named after the type locality, Medog County.

Comparative notes. The new species seems to be close to L. mirus Yin & Li, 2012 from Guangxi, and L. cognatus Yin & Li, 2012 , L. sarculus Yin & Li, 2102 and L. vespertilio Yin & Li, 2102 from Yunnan in sharing the lateral rows of golden pubescence on the head. Labomimus medogensis sp. nov. can be separated from all these congeners by the strongly asymmetric aedeagus (symmetric in all four known species), as well as its distribution.

Figures

FIGURE 13. Dorsal habitus of Labomimus males. A. L. maolan. B. L. medogensis. Scale bar: 1 mm.

FIGURE 15. Diagnostic features of Labomimus medogensis, male. A. Antennal club. B. Pronotum. C. Metaventral process, in lateral view. D. Protrochanter and profemur. E. Apex of protibia. F. Mesotrochanter and mesofemur. G. Apex of mesotibia. H. Metatrochanter and metafemur. I. Apex of metatibia. J. Sternite IX. K–M. Aedeagus, in dorsal (K), lateral (L), and ventral (M) view. Scale bar: A, B, D, F, H = 0.3 mm; C, K, L, M = 0.2 mm; J = 0.1 mm; E, G, I = 0.05 mm.