Tetraserica banhuaipoensis, 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 : 72

Tetraserica banhuaipoensis sp. n. Figures 31, 47

Type material examined.

Holotype: ♂ "NW Thailand, 9.-16.V. MAE HONG SON 1991 Ban Huai Po 1600 m leg. P. Pacholátko / coll. P. Pacholátko / 151 Sericini Asia spec." (CPPB). Paratypes: 1 ♂ "NW Thailand, 9.-16.V. MAE HONG SON 1991 Ban Huai Po 1600 m leg. P. Pacholátko / coll. P. Pacholátko” (ZFMK), 1 ♂ "THAI: 29.IV.1993, PAI City; Pacholatko & Dembicky leg./ coll. Pacholátko / 155 Sericini Asia spec." (ZFMK), 1 ♂ "THAI: 29.IV.1993, PAI City; Pacholatko & Dembicky leg./ coll. Pacholátko” (CPPB).

Description.

Length of body: 8.5 mm; length of elytra: 6.4 mm; maximum width: 5.6 mm. 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: 0.56. Ratio of length of metepisternum/metacoxa: 1/1.71. Metatibia short and wide, ratio width/length: 1/3.07; basal group of dorsal spines of metatibia at first third of metatibial length.

Aedeagus: Fig. 31 E–G. Habitus: Fig. 31H.

Female unknown.

Variation.

Length of body: 6.0-8.5 mm; length of elytra: 4.7-6.4 mm; maximum width: 4.2-5.6 mm.

Diagnosis.

Tetraserica banhuaipoensis sp. n. is similar to T. matsumotoi Kobayashi, 2017 and T. kiriromensis sp. n. in shape of the aedeagus. T. banhuaipoensis sp. n. differs from T. matsumotoi by having the right paramere distinctly shorter than median lamina of phallobase; from T. kiriromensis it differs by the sharply pointed apex of median phallobasal lamina and the right paramere being bent twice.

Etymology.

The new species is named after the type locality, Ban Huai Po (adjective in the nominative singular).