Tetraserica bachmaensis, 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 : 28

Tetraserica bachmaensis sp. n. Figures 8, 46

Type material examined.

Holotype: ♂ "X-DA4699 labcode: VD088, VIETNAM Tua Thien Hue Prov. Bach Ma Nat. Park, surr. Hotel Morin (1350-1400 m), 23-28.V.2014, legit L. Bartolozzi, G. Chelazzi, A. Bandinelli, S. Banbi, F. Fabiano, (n° Magazz. 2978) Tetraserica sp VI_V49/ sp VI-V49/ 935 Sericini Asia spec." (VNMN).

Description.

Length of body: 10.1 mm; length of elytra: 7.6 mm; maximum width: 6.9 mm. Dorsal surface blackish, ventral surface reddish brown. Surface of labroclypeus and disc of frons both 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: 1/1.56. Metatibia short and wide, ratio width/length: 1/2.68; basal group of dorsal spines of metatibia at first third of metatibial length. Ventral metatibial spine extremely elongated, distinctly exceeding first metatarsomere.

Aedeagus: Fig. 8 A–C. Habitus: Fig. 8D.

Female unknown.

Diagnosis.

Tetraserica bachmaensis sp. n. differs from the similar T. sigulianshanica Liu et al., 2014 and T. curviforceps sp. n. by its shorter median phallobasal lamina.

Etymology.

The new species is named after the type locality, Bach Ma National Park (adjective in the nominative singular).