Oreoderus brevitarsus 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 : 74-75

Taxon classification Animalia Coleoptera Scarabaeidae

Oreoderus brevitarsus Li & Yang sp. n. Fig. 3 A–F

Type material examined.

Holotype ♂, P.R. CHINA, Zhejiang, Mt. Gutianshan, G45-G15, 560m, broad-leaved mixed forest, 2009.VIII.2-5, leg. Liu Chongling. Holotype deposited in IZAS. Paratypes: P.R. CHINA, 1♂, Zhejiang, Mt. Gutianshan, G24ha-140, 446-715m, Broad-leaved mixed forest, 2009.VII. 5-8, leg. Liu Chongling, (IZAS); 1♀, Zhejiang, Mt. Gutianshan, G24ha-157, 446-715m, broad-leaved mixed forest, 2009.IX. 24-27, leg. Liu Chongling, (IZAS); 1♀, Zhejiang, Mt. Gutianshan, G24ha-83, 446-715m, broad-leaved mixed forest, 2009.VII. 26-29, leg. Liu Chongling, (IZAS); 1♀, Zhejiang, Mt. Gutianshan, G24ha-111, 446-715m, Broad-leaved mixed forest, 2009.VII. 5-8, leg. Liu Chongling, (IZAS); 1♂, Zhejiang, Mt. Gutianshan, 1992.VII.27, leg. Wu Hong, IOZ(E)902215, (IZAS); 1♂, Fujian, Zhang???hu (unrecognized name), 1981.VI.19, IOZ(E)902216, (IZAS); 1♂, Yunnan, Qiubei, Shupi 1278, Quercus, 1500m, leg. Kui Meihua, 1979.VII.6, IOZ(E)902199, (IZAS); 1♀, Yunnan, Xishuangbanna, Mengzhe, 1200m, 1958.VIII.23, leg. Pu Fuji, IOZ(E)902201, (IZAS); 1♂, Yunnan, Xishuangbanna, Xiaomengyang, 850m, 1958.IX.4, leg. MengXuwu, IOZ(E)90221, (IZAS); 1♂, Yunnan, Yiwu, Banna, Menglun, 650m, 1959.VIII.3, leg. Pu Fuji, IOZ(E)902211, (ERC).

Additional material examined.

1♀, P.R. CHINA, Zhejiang, Thousand island Lake (IEZU).

Diagnosis.

Based on the morphological comparison and PCA analysis of four characters (see below), this new species is close to Oreoderus dasystibialis and Oreoderus bidentatus , but differs from Oreoderus bidentatus by the shape of the carinae of the pronotum and can be separated from Oreoderus dasystibialis by the sharp teeth on the protibia and the absence of a thick brush on meso- and metatibia in the male. Finally, the aedeagi are very distinctive in the three species. The parameres are much slender than the other two species and the outer margin is sinuate. The female Oreoderus brevitarsus can be distinguished from Oreoderus bidentatus by the short stylus and the presence of a brush on the inner margin of the protibia.

Description of the holotype, male.

Length 8.2 mm; width 3.9 mm. Color: light brown to brown. Head: clypeus anteriorly rounded, lateral margin extended, with erected setae. Frons densely covered with testaceous scales. Ocular canthus short and broad, covered with same scales as clypeus. Antenna with 10 segments, clubs much longer than antennomeres 2-7. Pronotum: widest at the base, lateral margins sinuate. Surface covered with oblong lied-down scales. Carinae sharp, highly prominent, ending over 1/2 of the pronotum length; lateral small carinae short, sharp, not reaching the lateral margin of the pronotum. Scutellum: triangular, rounded at the apex, covered with shorter oval scales than pronotum. Elytra: with rows of punctate lines, covered with similar scales as scutellum. Propygidium : anteriorly glabrous and slightly punctate, posterior densely punctate and covered with scales. Spiracles moderately elevated. Pygidium: with thick, lied-down scales and one central scale tuft at the hind margin. Venter: coarsely and densely punctate. Visible sternite V smooth and bald in the middle. Visible sternite V twice longer than sternite IV. Legs: slender, femora and tibia covered with testaceous scales except for protibia. Outer margin of mesometatibia covered with more dense scales. Protibia short and bidentate, external teeth sharp. Tarsomeres with short setae. Parameres: short, lateral margin sinuate, the apex covered with yellow setae.

Description of female.

Length 7.5-10.4 mm; width 3.5-4.7. Pronotum broader than the male one; carinae much shorter, reaching about 1/3 of the disc. Propygidium much longer, and pygidium with a sharp stylus. Visible sternite V much broader. Protibia short and with thick brush in the inner margin; tooth slightly blunt, mesometatibia with same brush on the inner and outer margin.

Variability.

Male paratypes: length 9.0-9.5 mm; width 4.7-5.1 mm, and very similar to the holotype.

Etymology.

The new species is named for the short tarsi of protibia.

Distribution.

China: Zhejiang, Fujian, Yunnan.