Tetraserica phatoensis sp. n. Figures 18, 49

Type material examined.

Holotype: ♂ "Thailand, Chumphon prov., 27.iii-14.iv.1996 Pha To env. 9°48' 98"47, P. Průdek leg./ coll. P. Pacholátko / 150 Sericini Asia spec." (CPPB).

Description.

Length of body: 8.3 mm; length of elytra: 6.1 mm; maximum width: 5.3 mm. Dorsal surface blackish, ventral surface reddish brown. 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: 0.43. Ratio of length of metepisternum/metacoxa: 1/0.04. 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. 18 E–G . Habitus: Fig. 18H.

Female unknown.

Diagnosis.

Tetraserica phatoensis sp. n. differs from all other Tetraserica species with very short median lamina of the phallobase (one quarter of phallobase length) and a long and narrow, more or less straight, left paramere, and by the right paramere having divergent spines at the base and a separate lobe distally.

Etymology.

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