Tetraserica constanti, 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 : 52

Tetraserica constanti sp. n. Figures 20, 48

Type material examined.

Holotype: ♂ "Coll. I. R. Sc. N. B. Cambodia - 8 km north of Sre Noi (road to Along Vaeng)/ Light trap 29.V.2003 Leg. J. Constant & K. Smets/ 926 Sericini Asia spec." (ISNB). Paratype: 1 ♂ "Coll. I. R. Sc. N. B. Cambodia (Siem Road prov) Kbal Spean, Light Trap 28 V 2005 Leg Var & Grootaert" (ZFMK).

Description.

Length of body: 9.8 mm; length of elytra: 7.5 mm; maximum width: 6.5 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: 0.63. Ratio of length of metepisternum/metacoxa: 1/1.79. Metatibia short and wide, ratio width/length: 1/2.57; basal group of dorsal spines of metatibia at first third of metatibial length.

Aedeagus: Fig. 20 E–G. Habitus: Fig. 20H.

Female unknown.

Variation.

Length of body: 9.8-10.2 mm; length of elytra: 7.3-7.5 mm; maximum width: 6.2-6.5 mm.

Diagnosis.

Tetraserica constanti sp. n. is very similar to T. vari sp. n. in the shape of aedeagus but differs by the distinctly shorter median phallobasal lamina and parameres.

Etymology.

The new species is named after one of its collectors, J Constant (noun in genitive singular).