Tetraserica allosejugata, 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 : 89

Tetraserica allosejugata sp. n. Figures 39, 46

Type material examined.

Holotype: ♂ "China: S-Yunnan (Xishuangbanna) 27 km NW Jinghong vic. Beng Gang Ha Ni / N22 08.74; E 100 35.50, 1800-2000 m 29.V.2008 leg. A. Weigel KL/HF" (NME). Paratypes: 6 ♂♂ "China: S-Yunnan (Xishuangbanna) 27 km NW Jinghong vic. Beng Gang Ha Ni / N22 08.74; E 100 35.50, 1800-2000 m 29.V.2008 leg. A. Weigel KL/HF" (NME, ZFMK), 1 ♂ "Thai, Chiang Mai prov., 18°49'N, 98°54'E, 1600 m, DOI PUI mt., 2.-6.v., Vít Kubáň leg. 1996/ coll. P. Pacholátko / 165 Sericini Asia spec." (CPPB), 1 ♂ "Thai-N Chiang Mai prov., 18°49'N, 98°54'E, 1600 m, DOI PUI mt., 2.-6.v., Vít Kubáň leg. 1996/ coll. P. Pacholátko / 136 Sericini Asia spec." (CPPB), 1 ♂ "THAI 1-8.V.1993 SOPPONG PAI 1800 m Pacholátko & Dembický leg./ Coll. P. Pacholátko” (CPPB), 1 ♂ "N-Thailand V.1990 Doi Inthanon lg. Malicky" (ZSM), 1 ♂ "N-Thailand 25.-29.5.1990 Doi Inthanon leg. Malicky" (ZSM), 1 ♂ "839475/ 839475 Tetraserica sp THAI_DE09_2 Thailand L. Dembicky 23.-30.4.2009 Pha Pok Mt. Chiang Mai Prov. 20°02'36"N, 99°08'45"E, 1900-2000 m" (ZFMK), 1 ♂ "839484/ 839484 Tetraserica sp THAIL_DE09_2 Thailand L. Dembicky 2.-7.5.2009 Ang Khang region Chiang Mai Prov. 19°53'45 ’’ 99°02'45"E, 1600 m" (ZFMK), 1 ♂ "839475/ 839475 Tetraserica spTHAI_DE09_2 Thailand L. Dembicky 23.-30.4.2009 Pha Pok Mt. Chiang Mai Prov. 20°02'36"N, 99°08'45"E, 1900-2000 m" (ZFMK).

Description.

Length of body: 7.6 mm; length of elytra: 6.1 mm; maximum width: 4.4 mm. 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: 0.52. Ratio of length of metepisternum/metacoxa: 1/1, 81. Metatibia moderately long and wide, ratio width/length: 1/3.91; basal group of dorsal spines of metatibia at first third of metatibial length.

Aedeagus: Fig. 39 A–C. Habitus: Fig. 39D.

Female unknown.

Variation.

Length of body: 7.6-8.1 mm; length of elytra: 6.0-6.1 mm; maximum width: 4.4-4.8 mm.

Diagnosis.

Tetraserica allosejugata sp. n. differs from the very similar T. sejugata (Brenske, 1898) by the right paramere being split at the basal third into two narrow branches, while in T. sejugata this split is situated in the apical quarter.

Etymology.

The species name (adjective in the nominative singular) is derived from the combined Greek prefix allo- (nearly) and the species name sejugata, with reference to the similarity to T. sejugata (Brenske).