Labomimus yue, 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 : 526-527

Labomimus yue sp. nov.

( Figs. 22B , 24 )

Type material (9 ♂♂, 5 ♀♀). Holotype: CHINA: ♂: ‘ China: Guangdong, Ruyuan Hsien (乳源县), Nanling N. R. (南岭自然保护区), Shikengkong (石坑崆), 24°55′38′′N, 112°59′30′′E, bamboo forest, leaf litter, sifted, 1850 m, 27.IV.2015, Peng, Tu, Zhou leg.’ (SNUC). Paratype: CHINA: 1 ♂, 1 ♀: same label data as the holotype; 3 ♂♂, 3 ♀♀, also from Nanling , except ‘ 24°55′33′′N, 112°59′29′′E, 1820 m, 30.iv.2015 ’; 3 ♂♂, 1 ♀, also from Nanling, except ‘Lao-peng-yi-dui (老蓬一队), 24°56′21′′N, 112°01′21′′E, 1260 m, 02.V.2015 ’; 1 ♂, also from Nanling, except ‘ Disilindao (第四林道), 24°55′47′′N, 112°59′50′′E, 1500 m, 05.v.2015 ’ (all in SNUC) .

Diagnosis of male. Length over 3.50 mm; antennomeres IX–XI enlarged, lacking modification; pronotum with round lateral margins; long metaventral processes narrowed apically; all legs simple; aedeagus slightly asymmetric, with broad median lobe narrowed at middle of apex.

Description. Male ( Fig. 22B ). Length 3.50–3.62 mm. Head longer than wide, HL 0.76–0.79 mm, HW 0.63– 0.66 mm; eyes prominent, each composed of about 28 facets. Antenna with elongate scape, about 3.3 times as long as wide, antennomeres II–VII more or less elongate, antennomeres IX–XI enlarged, unmodified ( Fig. 24A ). Pronotum ( Fig. 24B ) about as long as wide, PL 0.64–0.67 mm, PW 0.67–0.69 mm, with round lateral margins. Elytra much broader than long, EL 0.84–0.87 mm, EW 1.11–1.14 mm. Metathoracic wings reduced. Metaventral processes ( Fig. 24C ) long, slightly curved and narrowed at apex in lateral view. Protrochanter and profemur ( Fig. 24D ), mesotrochanter and mesofemur ( Fig. 24E ), and metacoxa, metatrochanter, and metafemur ( Fig. 24F ) simple. Abdomen broad at base and narrowed posteriorly, AL 1.26–1.29 mm, AW 1.25–1.28 mm; tergite IV longest, approximately twice as long as tergite V; sternite IX as in Fig. 24G . Length of aedeagus ( Fig. 24 H–J) 0.66 mm; median lobe slightly asymmetric; elongate parameres flattened, and extended laterally in dorsoventral view.

Female. Similar to male in general morphology; eyes each composed of about 28 facets; antennae and legs simple; lacking metaventral processes. Measurements: BL 3.28–3.76 mm, HL 0.73–0.79 mm, HW 0.63–0.67 mm, PL 0.63–0.69 mm, PW 0.64–0.71 mm, EL 0.76–0.88 mm, EW 1.07–1.29 mm, AL 1.16–1.40 mm, AW 1.21–1.43 mm.

Distribution. China: Guangdong.

Etymology. ‘Yue (ª)’ is abbreviated for Guangdong, where the type locality is located.

Comparative notes. The new species is most similar to L. jinfomontis sp. nov. described above in sharing simple antennal clubs and largely unmodified legs. These two species can be separated by the relatively much longer metaventral processes with a curved apex, much broader apical portion of the aedeagal median lobe, and the widely divided parameres of the new species.

Figures

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

FIGURE 24. Diagnostic features of Labomimus yue, 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.