Tetraserica bolavensensis, 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 : 95-97

Tetraserica bolavensensis sp. n. Figures 41, 46

Type material examined.

Holotype: ♂ "Laos, Attapeu prov. Bolavens Plateau, bridge ca. 4 km E TAD KATAMTOK (at light) 15°07.8'N, 106°40.1'E, 260 m Jiři Hájek leg. 11-12.v.2010/ 929 Sericini Asia spec." (NMPC). Paratypes: 8 ♂♂ "Laos, Attapeu prov. Bolavens Plateau, bridge ca. 4 km E TAD KATAMTOK (at light) 15°07.8'N, 106°40.1'E, 260 m Jiři Hájek leg. 11-12.v.2010" (NMPC, ZFMK).

Description.

Length of body: 8.9 mm; length of elytra: 6.5 mm; maximum width: 5.5 mm. Surface of labroclypeus and disc of frons glabrous. Smooth area anterior to eye twice as wide as long. Eyes small, ratio of diameter/interocular width: 0.48. Ratio of length of metepisternum/metacoxa: 1/1.93. Metatibia short and wide, ratio width/length: 1/2.82; basal group of dorsal spines of metatibia at first third of metatibial length.

Aedeagus: Fig. 41 E–G. Habitus: Fig. 41H.

Female unknown.

Variation.

Length of body: 8.6-8.9 mm; length of elytra: 6.1-6.8 mm; maximum width: 5.3-5.9 mm.

Diagnosis.

Tetraserica bolavensensis sp. n. differs from the similar T. latefemorata Kobayashi, 2017 by the right paramere being half as long as left paramere and the deep split between lobes of right parameres; also the dorsal lobe is not reduced in size.

Etymology.

The new species is named after the type locality, Bolavens Plateau (adjective in the nominative singular).