Pseudoogeton maoxianum, Dong, Sai-Hong & Ren, Guo-Dong, 2016

Dong, Sai-Hong & Ren, Guo-Dong, 2016, A new Chinese Pseudoogeton species and key to the species of the genus (Coleoptera, Tenebrionidae, Amarygmini), ZooKeys 553, pp. 73-77 : 75-76

Taxon classification Animalia Coleoptera Tenebrionidae

Pseudoogeton maoxianum sp. n.

Type specimens.

Holotype ♂ (MHBU): CHINA, Sichuan, Maoxian County, Mt. Xiaomiaoshan, 1600m, 22.viii.1999, leg. Guo-Dong Ren & Sai-Hong Dong. Paratype: 1♀ (MHBU): same data as holotype [Transliterated from Chinese labels].

Distribution.

China (Sichuan).

Diagnosis.

The new species is characterized by the following: pronotum nearly hemispherical, widest in middle; elytra strongly convex, with fine strial puncture; apicale of aedeagus stouter, ratio of length/width = 1.4; basale 1.9 times longer than apicale.

Description.

Male. Wingless; body oblong oval (Fig. 1), dorsum strongly convex, black; elytra with sericeous tinge, pronotum and legs more lustrous than elytra.

Clypeus transverse, with dense punctures. Frontoclypeal suture fine and straight. Genae relatively small, roundly protruded laterad. Eyes small, reniform, distance between them approximately 2.3 times their own diameter. Mentum trapezoidal. Gula widely triangular. Terminal maxillary palpomeres securiform. Antennae filiform (Fig. 9), reaching over half of elytra; length ratio of antennomeres 1 to 11 as 0.33: 0.20: 1.24: 0.59: 0.78: 0.69: 0.69: 0.64: 0.57: 0.61: 0.85.

Pronotum (Fig. 3) convex, almost hemispherical, 1.3 times as wide as long, widest in middle, roundly narrowed anteriorly and posteriorly, anterior margin slightly arcuate, finely beaded, posterior margin noticeably produced, lateral margins finely beaded, visible in dorsal view throughout their whole length, anterior and posterior corners obtuse in lateral view; disc with tiny and sparse punctures.

Scutellum widely triangular, with a few punctures.

Elytra ovate, approximately 1.5 times as long as wide, approximately 2.6 times longer and 1.3 times wider than pronotum. Dorsum convex, maximum height at basal third, widest at basal 2/5, lateral sides roundly narrowed anteriorly and posteriorly. Disc with rows of tiny and sparse punctures, their distance equal to 3-4 times of puncture diameter; intervals flat and wide, transversely micro-aciculate, with extremely tiny punctures; lateral margins finely beaded.

Prosternum with a deep median groove between coxae. Prosternal process (Fig. 4) strongly bent upwards, with apophysis near apex.

Legs slender and rather long. Anterior edge of profemora (Fig. 8) with acute spine in apical third. Protibiae moderately curved, slightly widened and haired in apical half. Ratio of length of pro-, meso- and metatarsomeres 1 to 5 (or 4, metatarsomeres) as 0.60: 0.42: 0.42: 0.29: 1.13; 1.13: 0.63: 0.45: 0.28: 1.14; 1.93: 0.71: 0.46: 1.18. Claws sharp, falciform.

Abdominal ventrites with microscopic punctures and setae, ventrite V slightly emarginate at apex.

Aedeagus fusiform (Figs 5-7), 3.5 mm long. Apicale elongate, lateral sides serrate, ratio of length/width = 1.4. Basale 1.9 times longer than apicale.

Female: Body stouter than male (Fig. 2), pronotum 1.5 times as wide as long, elytra ovate, about 1.4 times as long as wide, about 3.0 times longer and 1.4 times wider than pronotum; prosternum groove between the coxae shallow.

Body length: ♂: 12.9 mm; ♀: 15.2 mm. Body width: ♂: 5.7 mm; ♀: 7.8 mm.

Etymology.

This specific epithet is derived from the type locality, Maoxian County, Sichuan Province, China.