Tetraserica tonkinensis (Moser, 1908) Moser, 1908

Liu, Wan-Gang, Fabrizi, Silvia, Bai, Ming, Yang, Xing-Ke & Ahrens, Dirk, 2014, A taxonomic review on the species of Tetraserica Ahrens, 2004, of China (Coleoptera, Scarabaeidae, Sericini), ZooKeys 448, pp. 83-121 : 101

Taxon classification Animalia Coleoptera Scarabaeidae

Tetraserica tonkinensis (Moser, 1908) comb. n.

Neoserica tonkinensis Moser, 1908: 328 (type locality: Tonkin, Mt.Mauson).

Type material examined.

Lectotype (here designated): ♂ [Vietnam] "Tonkin Montes Mauson April, Mai 2-3000' H. Fruhstorfer/ tonkinensis Mos." (ZMHB). Paralectotypes: 1 ♀ [Vietnam] "Tonkin Montes Mauson April, Mai 2-3000' H. Fruhstorfer/ tonkinensis Mos." (ZMHB), 5 ♀♀ [Vietnam] "Tonkin Montes Mauson April, Mai 2-3000' H. Fruhstorfer" (ZMHB).

Additional material examined.

1 ♂ [China] "Luoxiang, Jinxiu, Guangxi, 15.V.1999, 400m, leg. Li Wenzhu" (IZAS).

Redescription.

Body length: 9.0 mm, length of elytra: 7.0 mm, width: 5.9 mm. Surface of labroclypeus and disc of frons glabrous. Smooth area anterior to eye twice as wide as long. Eyes large; ratio of diameter/interocular width: 0.66. Antennal club 1.2 times as long as remaining antennomeres combined. Ratio of length of metepisternum/metacoxa: 1/1.45. Metafemur dull, anterior margin acute, without submarginal serrated line; anterior row of setae-bearing punctures absent; posterior margin with a large sharp hook. Metatibia short and wide, ratio width/length: 1/3.25; basal group of dorsal spines of metatibia at first third of metatibial length.

Aedeagus. Fig. 7 E–G. Habitus: Fig. 7H.

Variation.

Body length: 8.7-9.0 mm, length of elytra: 6.7-7.0 mm, width: 5.4-5.9 mm. Female has small eyes (ratio of diameter/interocular width: 0.6) and antennal club composed of 3 antennomeres being as long as the remaining antennomeres combined.

Remarks.

The species is recorded for the first time for China.