Oreoderus oblongus Li & Yang

Li, Sha, Ricchiardi, Enrico, Bai, Ming & Yang, Xingke, 2016, A taxonomy review of Oreoderus Burmeister, 1842 from China with a geometric morphometric evaluation (Coleoptera, Scarabaeidae, Valgini), ZooKeys 552, pp. 67-89 : 77-78

Taxon classification Animalia Coleoptera Scarabaeidae

Oreoderus oblongus Li & Yang sp. n. Fig. 5 A–F

Type material examined.

Holotype, ♂, P.R. CHINA, Yunnan, Xishuangbanna, Jinghong, 650m, 1958.VIII.12, leg. Meng Xuwu, IOZ(E)902189. Holotype deposited in IZAS. Paratypes: P.R. CHINA: 1♂, Yunnan, Xishuangbanna, Xiaomengyang, 850m, 1958.VIII.19, leg. Zhang Yiran, IOZ(E)902182, (IZAS); 1♂, Yunnan, Xishuangbanna, Xiaomengyang, 850m, 1958.VIII.20, leg. Pu Fuji, IOZ(E)902183, (IZAS); 1♂, Yunnan, Xishuangbanna, Xiaomengyang, 850m, 1958.IX.2, leg. Zheng Leyi, IOZ(E)902185, (IZAS); 1♂, Yunnan, Xishuangbanna, Jinghong, 650m, 1958.VIII.26, leg. Meng Xuwu, IOZ(E)902186, (IZAS); 1♂, Yunnan, Xishuangbanna, Jinghong, 650m, 1958.VII.15, leg. Meng Xuwu, IOZ(E)902188, (IZAS); 1♂, Yunnan, Xishuangbanna, Menglun, 580m, 1993.IX.10, leg. Xu Huanli, IOZ(E)902204, (IZAS); 1♂, Yunnan, Xishuangbanna, Menglun, 600m, 1993.IX.9, leg. Yang Longlong, IOZ(E)902205, (IZAS); 1♂, Yunnan, Xishuangbanna, Jinghong, 650m, 1958.VII.27, leg. Meng Xuwu, IOZ(E)902208, (ERC); 1♀, Yunnan, Xishuangbanna, Xiaomengyang, 850m, 1957.X.20, leg. Pu Fuji, IOZ(E)902223, (IZAS).

Diagnosis.

Based on the morphological comparison and PCA analysis of four characters (see below), this new species is close to Oreoderus maculipennis , but lacks a spine on the outer margin of meso- and metatibia and elytra without white patch scales in the new species. The parameres are very short in Oreoderus oblongus .

Description of the holotype, male.

Length 8.4 mm; width 4.0 mm. Color: light brown to brown. Head: clypeus anteriorly rounded, with erect setae on the anterior margin. Frons covered with testaceous scales. Ocular canthus short, covered with same scales. Antenna with 10 segments, clubs not much longer than antennomeres 2-7. Pronotum: widest at base, lateral margins sinuate. Surface densely punctate, covered with lied down scales. Carinae sharp, highly prominent, ending around 2/3 of the pronotum length; Lateral small carinae short, sharp, not joining the lateral margin of the pronotum. Scutellum: triangular, rounded at the apex, covered with testaceous scales. Elytra: with rows of punctate line, densely covered with oval scales. Propygidium : broad, punctate, covered with lied down scales. Spiracles moderately elevated. Pygidium: triangular, punctuation rounded, with thick lied down scales. Venter: coarsely and densely punctate with testaceous scales. Visible sternite V twice longer than sternite IV. Legs: slender, covered with oval scales except for protibia. Protibia tridentate; the third tooth small, far from the first two teeth. Meso- and metatibia covered with only sparse scales. Tarsomeres with short setae. Parameres: perpendicular to phallobase, the apex is sharp.

Description of female.

Length 9.7 mm; width 4.5 mm. Pronotum a little broader than the male; carinae slightly shorter. Propygidium much longer, and pygidium more highly prominent. Visible sternite V much broader. External tooth of protibia apparently blunt. Tarsomeres more robust.

Variability.

paratypes length 7.0-9.2 mm; width 3.7-4.3 mm, and very similar to the holotype.

Etymology.

the new species is named for the oblong shape of the body.

Distribution.

China: Yunnan.