Linan mangshanus, Zhang, Yu-Qing, Li, Li-Zhen & Yin, Zi-Wei, 2018

Zhang, Yu-Qing, Li, Li-Zhen & Yin, Zi-Wei, 2018, Six new species and a new record of Linan Hlavac in China, with a key to species (Coleoptera, Staphylinidae, Pselaphinae), ZooKeys 793, pp. 115-133 : 125

Linan mangshanus sp. n. Figs 7A, 8, 11B

Type material.

(2 ♂♂). Holotype: CHINA: ♂: 'China: Hunan, Chenzhou, Yizhang Hsien (宜章县), Mangshan N. R. (莽山自然保护区), 24°56'26"N, 112°59'18"E, mixed forest, leaf litter, wood sifted & beating, 1400 m, 26.iv.2015, Peng, Tu, Zhou leg.' (SNUC). Paratype: CHINA: 1 ♂, same label data as the holotype, (SNUC).

Diagnosis of male.

Length 3.25-3.35 mm; antennomere IX–X strongly modified, IX strongly expanded and bent at lateral margin, with distinct process at anteromesal corner; broad metaventral processes expanded at apex in lateral view; metacoxa with roundly triangular ventral projection.

Redescription.

Male (Figure 7A). Length 3.25-3.35 mm. Head longer than wide, HL 0.69-0.75 mm, HW 0.60-0.64 mm; eyes prominent, each composed of about 33 facets. Antenna with scape about 3.8 times as long as wide, antennomeres II–III and VIII similar, each about as long as wide, IV slightly longer than wide, V–VII each much longer than wide, antennomere IX (Figure 8A) much longer than wide, strongly expanded and bent at lateral margin, with distinct process at anteromesal corner, antennomere X strongly transverse. Pronotum (Figure 8B) slightly longer than wide, PL 0.65-0.66 mm, PW 0.60-0.63 mm. Elytra much wider than long, EL 0.71-0.73 mm, EW 1.07-1.08 mm. Metaventral processes (Figure 8C) broad, expanded at apex in lateral view. Protrochanter, profemur simple (Figure 8D), mesotrochanter, and mesofemur (Figure 8E) simple; metacoxa (Figure 8F) with short and triangular ventral projection. Abdomen slightly wider than elytra, AL 1.20-1.21mm, AW 1.12-1.13 mm; tergite IV about twice as long as tergite V; sternite IX as in Figure 8G. Length of aedeagus (Figure 8 H–J) 0.56 mm; median lobe symmetric; elongate parameres slightly curved ventrally at middle in lateral view.

Female. Unknown.

Distribution.

China: Hunan (Figure 11B).

Etymology.

The new species is named after the type locality, i.e., Mangshan Nature Reserve.

Comparative notes.

The new species is placed as a member of the L. cardialis -group based on the modified male antennomere IX, and most similar to L. hainanicus Hlaváč in shape of male antennomere IX. They can be readily separated by the much broader metaventral processes, lack of a large apical projection of the protibia, complete symmetric aedeagal median lobe, and different structures of the endophallus of the new species. The broad metaventral processes, projecting metacoxae, and high symmetry of the aedeagal median lobe are shared by L. uenoi Yin & Nomura from Guangxi. They differ mainly by the modified antennomeres VII–VIII of L. uenoi , a quite distinct feature for a member of Linan .