Labomimus wuchaoi, 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 : 524-526

Labomimus wuchaoi sp. nov.

( Figs. 22A , 23 )

Type material (3 ♂♂). Holotype: CHINA: ♂: ‘ China : Yunnan, Gongshan Co., Dulongjiang To., Xiongdang, 28°06′30.31′′N, 98°19′23.59′′E, 1925 m, 10.vii.2015, Chao Wu leg.’ (SNUC). Paratype: CHINA: 2 ♂♂: same data as the holotype ( SNUC) .

Diagnosis of male. Length over 3.0 mm; antennomeres IX–XI strongly modified, antennomeres IX strongly expanded, X extended laterally, XI broadly concave at basal half; metaventral processes long; mesotrochanter with distinct ventral spine; aedeagus asymmetric, with median lobe broad at apex and emarginate at middle.

Description. Male ( Fig. 22A ). Length 3.26–3.34 mm. Head slightly longer than wide, HL 0.62–0.63 mm, HW 0.59–0.60 mm; eyes prominent, each composed of about 33 facets. Antenna with scape about 3.1 times as long as wide, antennomeres II–VII more or less elongate, antennomere VIII as long as broad, antennomere IX ( Fig. 23A ) transverse, strongly expanded, antennomere X extended laterally at base, antennomere XI broadly concave in basal half. Pronotum ( Fig. 23B ) slightly longer than wide, PL 0.59–0.62 mm, PW 0.57–0.58 mm, sides angulate at apical third. Elytra much broader than long, EL 0.83–0.86 mm, EW 1.16–1.21 mm. Long metaventral processes ( Fig. 23C ) narrowing apically, curved ventrad at apices in lateral view. Protrochanter and profemur ( Fig. 23D ) simple; mesotrochanter ( Fig. 23E ) with thin, distinct ventral spine, mesofemur simple; metacoxa, metatrochanter, and metafemur ( Fig. 23F ) simple. Abdomen broad at base and narrowed posteriorly, AL 1.22–1.23 mm, AW 1.18–1.21 mm; tergite IV longest, approximately twice as long as tergite V; sternite IX as in Fig. 23G . Length of aedeagus ( Fig. 23 H–J) 0.55 mm; median lobe asymmetric, emarginate apically at middle; elongate parameres curved ventrally in lateral view.

Female. Unknown.

Distribution. China: Yunnan.

Etymology. The specific epithet is named after our friend Wu Chao, collector of the type series.

Comparative notes. Labomimus wuchaoi sp. nov. is similar to L. qiujianyuae sp. nov. described above in sharing a similarly expanded antennomere IX, and a concave mesal margin of the antennomere XI. They can be best separated by the forms of the antennal modification in the male, and the aedeagus.

Figures

FIGURE 22. Dorsal habitus of Labomimus males. A. L. wuchaoi. B. L. yue. Scale bar: 1 mm.

FIGURE 23. Diagnostic features of Labomimus wuchaoi, male. A. Antennal club. B. Pronotum. C. Metaventral process, in lateral view. D. Protrochanter and profemur. E. Mesotrochanter and mesofemur. F. Metatrochanter and metafemur. G. Sternite IX. H–J. Aedeagus, in dorsal (H), lateral (I), ventral (J) view. Scale bar: A, B, D, E, F = 0.3 mm; C, H, I, J = 0.2 mm; G = 0.1 mm.