Megatyrus schuelkei Yin & Li

Yin, Zi-Wei & Li, Li-Zhen, 2013, Notes on Michael Schuelke's pselaphine collections from China. - Tyrini. II. Genus Megatyrus Hlavac & Nomura (Coleoptera, Staphylinidae, Pselaphinae), ZooKeys 301, pp. 107-112 : 108-110

Megatyrus schuelkei Yin & Li sp. n. Figs 1A, 2

Type material

(2 ♂♂). Holotype: ♂, labeled 'CHINA: Yunnan, Lincang Pref., / Xue Shan, 48 km N Lincang, / 2070 m, 24°19'03"N, 100°07'13"E, / forest remnant, N- slope, litter & / mushrooms sifted, 12.IX.2009, / leg. M. Schülke [CH09-45]' (pcMS). Paratype: 1 ♂, same label data as holotype (SNUC).

Description.

Male (Fig. 1A). Length 3.52-3.70 mm. Head longer than wide, HL 0.81-0.84 mm, HW 0.68-0.69 mm; eyes each composed of about 50 facets; maxillary palpi as in Fig. 2B; antennae (Fig. 2A) with scapes roundly projecting basolaterally; terminal three antennomeres enlarged. Pronotum longer than wide, PL 0.71-0.73 mm, PW 0.64-0.65 mm, lateral margins nearly parallel, evenly narrowed apically at basal 2/3. Elytra wider than long, EL 0.97-0.99 mm, EW 1.43-1.48 mm. Mesotrochanters, metatrochanters and metafemora lacking spine or projection at ventral margins. Abdomen broad at base and narrowed apically, AL 1.03-1.14 mm, AW 1.38-1.40 mm. Tergite VIII as in Fig. 2C; sternite VIII as in Fig. 2D; sternite IX as in 2E. Aedeagus length 0.83 mm, with elongate median lobe asymmetric (Figs 2F, G).

Female. Unknown.

Comparative notes.

Megatyrus schuelkei is most similar to Megatyrus laqueus Hlaváč & Nomura from Vietnam in sharing similar body size and aedeagal structure. The two species can be clearly separated by the more elongate maxillary palpi, and the antennomeres VI–VIII are slightly more elongate in the new species. Megatyrus laqueus has shorter maxillary palpi and quadrate antennomeres VI–VIII. Megatyrus schuelkei can be separated from Megatyrus menglianensis by the more elongate pronotum, and different aedeagal structure.

Distribution.

Southwest China: Yunnan.

Biology.

Individuals were collected from sifted leaf litter with mushrooms in a forest remnant.

Etymology.

The new species is named after Michael Schülke, collector of the type series.