Tetraserica nussi sp. n. Figures 31, 49

Type material examined.

Holotype: ♂ "Cambodia 3. Cardamom Mts., near Cham Kar Chhrey, 12°20'N, 103°01'E, 350 m, Dry Riverine in evergreen forest, 6.iii.2000, leg. M. Nuss/ Staatl. Museum für Tierkunde Dresden/ 119 Sericini Asia spec." (SMTD). Paratypes: 1 ♂ "Coll. I. R. Sc. N. B. Cambodia, Pursat prov. Phnom Samkos W.S. Pramaoy, forest edge 13-IV-2005, Light Trap Leg. K. Smets & I. Var" (ZFMK), 1 ♂ "Coll. I. R. Sc. N. B. Cambodia, Pursat prov. Phnom Samkos W.S. Pramaoy Forest Edge 15-IV-2005, Light Trap Leg. K. Smets & I. Var" (ISNB), 1 ♂ "Coll. I. R. Sc. N. B. Cambodia, Pursat prov. Phnom Samkos W.S. Pramaoy, forest edge 13.iv. 2005, Light Trap Leg. K. Smets & I. Var" (ISNB).

Description.

Length of body: 8 mm; length of elytra: 5.8 mm; maximum width: 5.4 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: 0.54. Ratio of length of metepisternum/metacoxa: 1/1.68. Metatibia moderately long and wide, ratio width/length: 1/3.38; basal group of dorsal spines of metatibia at first third of metatibial length.

Aedeagus: Fig. 31 I–K . Habitus: Fig. 31L.

Female unknown.

Variation.

Length of body: 8.0-8.1 mm; length of elytra: 5.7-5.8 mm; maximum width: 4.9-5.4 mm.

Diagnosis.

Tetraserica nussi sp. n. is very similar to T. subrotundata sp. n. in shape of aedeagus, but differs by the much shorter parameres and median phallobasal lamina; the dorsal lobe of left paramere is as long as the ventral one (and not shorter as in T. subrotundata) and the apex of phallobase is strongly asymmetric (dorsal view).

Etymology.

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