Tetraserica smetsi, 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 : 39

Tetraserica smetsi sp. n. Figures 14, 51

Type material examined.

Holotype: ♂ "Coll. I. R. Sc. N. B., Cambodia, Pursat prov., Phnom Samkos W.S. forest edge, light trap 14.iv.2005 Leg. K. Smets & I. Var" (ISNB). Paratypes: 2 ♂♂ "Coll. I. R. Sc. N. B. Cambodia (Pursat Prov.) Phnom Samkos wild life Sanctuary, light trap Forest Edge & Primary 14-IV-2005 Leg. K. Smets & I. Var" (ISNB), 7 ♂♂ "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, ZFMK).

Description.

Length of body: 9.4 mm; length of elytra: 6.9 mm; maximum width: 5.8 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: 0.65. Ratio of length of metepisternum/metacoxa: 1/1.79. Metatibia short and wide, ratio width/length: 1/2.78; basal group of dorsal spines of metatibia at first third of metatibial length.

Aedeagus: Fig. 14 A–C. Habitus: Fig. 14D.

Female unknown.

Variation.

Length of body: 9.3-9.4 mm; length of elytra: 6.6-6.9 mm; maximum width: 5.7-5.8 mm.

Diagnosis.

Tetraserica smetsi sp. n. is very similar to T. shangsiensis Liu et al., 2014 in shape of the aedeagus. The new species differs from the latter by the median lamina of phallobase being approximately as long as left paramere and slightly bifurcate at apex, as well as the preapical tooth of the left paramere being dorsally positioned and duplicate. In T. shangsiensis the median lamina of phallobase is distinctly shorter than left paramere, simply pointed, and slightly rounded at apex.

Etymology.

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