Tetraserica yaoanica, Liu, Wan-Gang, Fabrizi, Silvia, Bai, Ming, Yang, Xing-Ke & Ahrens, Dirk, 2014

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 : 108-109

Taxon classification Animalia Coleoptera Scarabaeidae

Tetraserica yaoanica sp. n.

Type material examined.

Holotype: ♂ [China] "Yaoan, Lianxian County, Guangdong, 28.VI.1965, leg. Zhang Youwei" (IZAS). Paratypes: China. 1 ♂ "Qiliqiao, Chong‘anxingcun, Fujian, 12,13.VII.1963, 840m, leg. Zhang Youwei" (ZFMK), 1 ♂ "Mt. Jiulianshan, Longnan, Jiangxi, 8.VI.1975, light trap, leg. Zhang Youwei" (IZAS), 1 ♀ "Daqiu Forestry Farm, Mt. Jiulianshan, Longnan, Jiangxi, 11.VI.1975, light trap, leg. Zhang Youwei" (IZAS), 1 ♂ "Mt. Jiulianshan, Longnan, Jiangxi, 8.VI.1975, light trap, leg. Zhang Youwei" (IZAS), 1♂ "Changguling Forestry Farm, Mts. Jinggangshan, Jiangxi, 4.VII.1975, light trap" (IZAS), 1 ♂ "Xinzuochang, Boluo, Guangdong, 3.VI.1965, leg. Zhang Youwei" (IZAS), 1 ♂ "Dong'an, Hunan, 20.V.(19)54" (IZAS), 1 ♂ "Guangxi, Shangsi Shiwandashan 2011-VII-7, 263m" (IZAS). Vietnam. 3 ♂♂ "Vietnam-N (Na Hang) 160km from Ha Noi, NE env. of Na Hang, 3.-14.6.1996 150-200m leg. A. Napolov & I. Roma" (CNAR, ZFMK), 1 ♂ "S. Vietnam (Cat Tien) 120 km NNE Ho Chi Minh, Cat Tien Nat. Park 30.5.-15.6.1995 leg. A. Napolov" (CNAR).

Description.

Body length: 7.2 mm, length of elytra: 5.4 mm, width: 4.3 mm. Body reddish brown. Labroclypeus surface with a few erect setae. Disc of frons with a few single setae. Smooth area in front of eye approximately 4 times as wide as long. Eyes large; ratio of diameter/interocular width: 0.86. Antennal club 1.3 times as long as remaining antennomeres combined.

Ratio of length of metepisternum/metacoxa: 1/1.68. Metafemur with a serrated continuous line beside anterior margin, with fine sparse punctures behind line each bearing a short seta.

Metatibia moderately long, ratio width/length: 1/3.82; basal group of dorsal spines of metatibia behind middle; beside dorsal margin in basal half with a blunt carina being partly finely serrate.

Aedeagus. Fig. 10 I–K. Habitus: Fig. 10L.

Female unknown.

Variation.

Body length: 6.6-7.9 mm, length of elytra: 4.9-6.0 mm, width: 4.1-4.6 mm. Female has small eyes (ratio of diameter/interocular width: 0.51) and the antennal club composed of 3 antennomeres being as long as the remaining antennomeres combined.

Diagnosis.

Tetraserica yaoanica sp. n. is very similar to Tetraserica leishanica external and in the shape of male genitalia. It differs by the shape of parameres only: basal lobe of the left paramere is short (basal lobe in Tetraserica leishanica is long); basal lobe of the right paramere is wide and more than half as long as the paramere (short in Tetraserica leishanica ).

Etymology.

The new species is named after its type locality, Yaoan.