Tetraserica shanensis, Fabrizi, Silvia, Dalstein, Vivian & Ahrens, Dirk, 2019

Fabrizi, Silvia, Dalstein, Vivian & Ahrens, Dirk, 2019, A monograph on the genus Tetraserica from the Indochinese region (Coleoptera, Scarabaeidae, Sericini), ZooKeys 837, pp. 1-155 : 86-87

Tetraserica shanensis sp. n. Figures 38, 50

Type material examined.

Holotype: ♂ "Burma (Myanmar) SW Shan state Taunggyi J. Rejsek 1.-18.6.1997/ coll. Dirk Ahrens/ 213 Sericini Asia spec." (ZFMK). Paratypes: 3 ♂♂ "Burma (Myanmar) SW Shan state Taunggyi J. Rejsek 1.-18.6.1997/ coll. Dirk Ahrens" (ZFMK), 2 ♂♂, 6 ♀♀ "Burma (Myanmar) SW Shan state Taunggyi J. Reysek [sic!] 1.-18.6.1997" (ZFMK).

Description.

Length of body: 7.1 mm; length of elytra: 4.9 mm; maximum width: 4.1 mm. Body yellowish brown, head darker. Surface of labroclypeus and disc of frons glabrous. Smooth area anterior to eye twice as wide as long. Eyes moderately large, ratio of diameter/interocular width: 0.71. Ratio of length of metepisternum/metacoxa: 1/1.57. Metatibia short and wide, ratio width/length: 1/3.18; basal group of dorsal spines of metatibia at first third of metatibial length.

Aedeagus: Fig. 38 A–C. Habitus: Fig. 38D.

Variation.

Length of body: 7.1-8.3 mm; length of elytra: 4.9-5.6 mm; maximum width: 4.1-4.4 mm. Female: Antennal club with three antennomeres, as long as remaining antennomeres combined; eyes as large as in male; pygidium weakly convex at apex.

Diagnosis.

Tetraserica shanensis sp. n. differs from all other Tetraserica species in having evenly long spines on ventral margin of metatibia, and in the colour of the dorsal surface being yellowish brown.

Etymology.

The new species is named with reference to its occurrence in the Shan state (adjective in the nominative singular).