Tetraserica angkorwatensis, 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 : 43

Tetraserica angkorwatensis sp. n. Figures 15, 47

Type material examined.

Holotype: ♂ "Coll. I. R. Sc. N. B. Cambodia: Siem Reap prov. Forest S of Angkor Wat 26-IV-2005, Light Trap, Leg K. Smets & I. Var/ 904 Sericini Asia spec." (ISNB). Paratypes: 4 ♂♂ "Coll. I. R. Sc. N. B. Cambodia: Siem Reap prov. Forest S of Angkor Wat 26-IV-2005, Light Trap, Leg K. Smets & I. Var" (ISNB, ZFMK).

Description.

Length of body: 7.5 mm; length of elytra: 5.9 mm; maximum width: 4.9 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: 0.68. Ratio of length of metepisternum/metacoxa: 1/1.79. 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. 15 E–G. Habitus: Fig. 15H.

Female unknown.

Variation.

Length of body: 7.5-7.8 mm; length of elytra: 5.8-5.9 mm; maximum width: 4.9-5.0 mm.

Diagnosis.

Tetraserica angkorwatensis sp. n. is rather similar to T. gestroi (Brenske, 1898) in shape of aedeagus; the new species differs by having the median lamina of the phallobase curved at its apex dorsally, while the base of the left paramere is not extended ventrally.

Etymology.

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