Labomimus qiujianyuae, 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 : 521-522

Labomimus qiujianyuae sp. nov.

( Figs. 19A , 20 )

Type material ( 1 ♂) Holotype: CHINA: ♂: ‘ China: Xizang, Rikaze, Jilong (吉隆县), 103°35’33.18’’E, 1700 m, 29–31.VII.2017, Qiu & Xu leg.’ ( SNUC).

Diagnosis of male. Length nearly over 3.0 mm; antennomeres IX and XI strongly modified, antennomere IX strongly expanded, antennomere XI shallowly concave near base; metaventral processes long; protibia with short apical spine; aedeagus strongly asymmetric, with median lobe elongate and truncate at apex.

Description. Male ( Fig. 19A ). Length 3.18 mm. Head much longer than wide, HL 0.60 mm, HW 0.47 mm; eyes prominent, each composed of about 40 facets. Antenna with scape about 2.6 times as long as wide, antennomeres II–VII more or less elongate, antennomere VIII small and transverse, antennomere IX ( Fig. 20A ) transverse, angularly expanded laterally, antennomere X much longer than wide, antennomere XI shallowly concave near base. Pronotum ( Fig. 20B ) about as long as wide, PL 0.59 mm, PW 0.60 mm, sides slightly angulate at apical two-fifths. Elytra much broader than long, EL 0.90 mm, EW 1.20 mm. Metaventral processes ( Fig. 20C ) long, shallowly emarginate apically in lateral view. Protrochanter and profemur ( Fig. 20D ) simple, protibia ( Fig. 20E ) with short but distinct spine at apex; mesotrochanter and mesofemur ( Fig. 20F ) simple; metacoxa, metatrochanter, and metafemur ( Fig. 20G ) simple. Abdomen broad at base and narrowed posteriorly, AL 1.09 mm, AW 1.26 mm; tergite IV longest, more than twice as long as the second; sternite IX as in Fig. 20H . Length of aedeagus ( Fig. 20 I–K) 0.56 mm; median lobe asymmetric, in lateral view broad through entire length, apically truncate; parameres short, slightly curved, narrowing apically.

Female. Unknown.

Distribution. China: Xizang.

Etymology. The specific epithet is dedicated to Jian-Yue Qiu, co-collector of the single male.

Comparative notes. The new species is similar to L. wuchaoi sp. nov. described below in sharing a similarly expanded antennomere IX, and a concave mesal margin of the antennomere XI. These two species can be separated by the different configurations of the antennal modifications in the male, and the aedeagus.

Figures

FIGURE 19. Dorsal habitus of Labomimus males. A. L. qiujianyuae. B. L. torticornis. Scale bar: 1 mm.

FIGURE 20. Diagnostic features of Labomimus qiujianyuae, 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. Metatrochanter and metafemur. H. Sternite IX. I–K. Aedeagus, in dorsal (I), lateral (J), and ventral (K) view. Scale bar: A, B, D, F, G = 0.3 mm; C, I, J, K = 0.2 mm; H = 0.1 mm; E = 0.05 mm.