Tetraserica sigulianshanica, 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 : 91-92

Taxon classification Animalia Coleoptera Scarabaeidae

Tetraserica sigulianshanica sp. n.

Type material examined.

Holotype: ♂ "China: Sichuan; Wolong Reserve, Sigulian Shan, 31°09'N, 103°06'E v.2006, 1500-1800m leg. V. Siniaev" (ZFMK). Paratypes: 1 ♂ "Suifu (nr) Sz. China/ DC Graham coll. Aug 25-7, ‘29” (USNM), 1 ♂ "Szechuen China DC Graham/ bet Yachow and Mupin Jun.23-6 '29 2000-3000ft." (USNM), 3 ♂♂ "Minzhuzhen, Lan'gao County, Shaanxi, 4.VII.2003, leg. Yuan Caixia, Liu Yushuang" (HBUM), 1 ♂ "Longju, Wanxian County, Sichuan, 18.VI.1995, 2500m, leg. Wang Shuyong" (IZAS), 1 ♂ "Foping, Shaanxi, 26.VI.1999, 890m, leg. Zhang Youwei" (IZAS), 1 ♂ "Chongqing, Jinfoshan, 2010-VI-13, 713m" (IZAS), 1 ♂ "Xiuqizhen, Chengkou, Chongqing, 13.VII.2003, leg. Yuan Caixia, Liu Yushuang" (HBUM), 1 ♂ "Ningshan, Shaanxi, VIII.1982, light trap" (NUYS), 1 ♂ "Zhongmiao, Bikou, Wenxian County, Gansu, 24.VI.1998, 700m, leg. Yuan Decheng" (IZAS), 1 ♂ "China, Sichuan 12.-14.VII.1995 Baoxing env., cca 50km NNW of Yaan 30°22'N, 102°50'E M. Trýzna et O. Šafranek lgt." (CPPB).

Description.

Body length: 7.6 mm, length of elytra: 5.9 mm, width: 4.8 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: 0.6. Antennal club 1.2 times as long as remaining antennomeres combined. Ratio of length of metepisternum/metacoxa: 1/1.4.

Metafemur dull, anterior margin acute, without submarginal serrated line; anterior row of setae-bearing punctures absent; posterior margin straight, without blunt tooth. Metatibia short and wide, ratio width/length: 1/3; basal group of dorsal spines of metatibia at first third of metatibial length.

Aedeagus. Fig. 3 A–C. Habitus: Fig. 3D.

Female unknown.

Variation.

Body length: 6.6-7.6 mm, length of elytra: 5.1-5.9 mm, width: 3.9-4.8 mm.

Diagnosis.

Tetraserica sigulianshanica sp. n. differs from the similar Tetraserica fikaceki sp. n. by the shape of parameres: the dorsal (= basal) lobe of the right paramere (in lateral view) is long, filiform, and strongly curved (Fig. 3A), the left paramere is much longer than that of Tetraserica fikaceki sp. n. (Fig. 2K, L).

Etymology.

The new species is named after its type locality, Sigulian Shan.