Tetraserica infida, 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 : 59-60

Tetraserica infida sp. n. Figures 24, 47

Type material examined.

Holotype: ♂ "Birmania Ruby M/ Doherty" (NHMUK). Paratype: 1 ♀ "Birmania Ruby Mes/ Doherty/ Fry Coll. 1900.100." (NHMUK).

Description.

Length of body: 7.3 mm; length of elytra: 5.4 mm; maximum width: 4.6 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: 0.56. Ratio of length of metepisternum/metacoxa: 1/1.52. Metatibia short and wide, ratio width/length: 1/2.85; basal group of dorsal spines of metatibia at first third of metatibial length.

Aedeagus: Fig. 24 I–K. Habitus: Fig. 24L.

Variation.

Length of body: 7.3-8.1 mm; length of elytra: 5.4-6.6 mm; maximum width: 4.6-5.0 mm. Female: Antennal club with three antennomeres, as long as remaining antennomeres combined; eyes as large as in male.

Diagnosis.

Tetraserica infida sp. n. strongly resembles T. maerimensis Kobayashi, 2018; the new species differs from the latter by the simple left paramere not being divided into dorsal and ventral lobes.

Etymology.

The name of the new species (adjective in nominative singular) is derived from the combined Latin prefix in- (non-) and adjective fidus (split), with reference to its unsplit left paramere.