Megatyrus tengchongensis 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 : 110-111

Megatyrus tengchongensis Yin & Li sp. n. Figs 1B, 3

Type material

(1 ♀). Holotype: ♀, labeled 'CHINA: Yunnan [CH07-17] / Baoshan Pref., mountain range 25 km S / Tengchong, 1900 m, 24°48'28"N, 98°32'03"E, dev. primary decid. forest, / litter, fungi sifted, 2.V.2007, M. Schülke’ (pcMS).

Description.

Female (Fig. 1B). Length 3.71 mm. Head longer than wide, HL 0.79 mm, HW 0.65 mm; eyes each composed of about 35 facets; maxillary palpi as in Fig. 3B; antennae (Fig. 3A) with scapes simple; terminal three antennomeres enlarged. Pronotum slightly longer than wide, PL 0.74 mm, PW 0.71 mm, lateral margins nearly parallel, evenly narrowed apically at middle. Elytra wider than long, EL 0.93 mm, EW 1.43 mm. Legs simple. Abdomen broad at base and narrowed apically, AL 1.25 mm, AW 1.46 mm. Tergite VIII as in Fig. 3 C–E; sternite VIII as in Fig. 3F. Genital complex weakly sclerotized, width 0.55 mm, with dorsal and ventral sclerites (Figs 3G).

Male. Unknown.

Comparative notes.

In general, Megatyrus males are morphologically similar to females, and possess indistinct second sexual characters. Proportions of head, pronotum and abdomen between male and female are close, except that females have much shorter elytra, as well illustrated in Nomura et al. (2011: 123). The single female of Megatyrus tengchongensis is very similar to that of Megatyrus menglianensis Hlaváč & Nomura by the tergite VIII possessing a large and thick median projection, but the two species can be separated by the maxillary palpomeres I being more elongate in Megatyrus tengchongensis , and the clearly different structure of the genital complex. From Megatyrus schuelkei described above, Megatyrus tengchongensis can be separated by the relatively much shorter and stouter pronotum.

Distribution.

Southwest China: Yunnan.

Biology.

The adult was collected from sifted leaf litter in a deciduous forest.

Etymology.

The new species is named after the type locality, Tengchong County.