Oreoderus Burmeister, 1842

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 : 70-74

Taxon classification Animalia Coleoptera Scarabaeidae

Genus Oreoderus Burmeister, 1842

Oreoderus Burmeister, 1842: 726.

Type species.

Valgus argillaceus Hope, 1841, by monotypy.

Diagnosis.

Oreoderus can be distinguished from all other genera within the tribe Valgini by the following characters: a) protibia with only two or three external teeth; b) the first joint of the hind tarsus shorter than the second one; c) pronotum elongated with four carinae; d) visible sternite V twice longer than sternite IV.

Distribution.

China, India, Sikkim, Bhutan, Myanmar, Vietnam, Laos, Thailand, Cambodia, Sri Lanka, Malaysia (Fig. 2).

Key to the species of the male Oreoderus

*To separate them see the shape of the parameres.

Review of Oreoderus from China

The genus Oreoderus was recently revised by Ricchiardi (2001), though the Chinese Oreoderus species received little attention. Ma (1993, 1995) recorded four Oreoderus species from China: Oreoderus humeralis Gestro, 1891, Oreoderus quadricarinatus Arrow, 1944, Oreoderus crassipes Arrow, 1944, Oreoderus momeitensis Arrow, 1910. Unfortunately, Ma misidentified these four species. Based on our examination of specimens deposited in IZAS, we identified Oreoderus humeralis Gestro, 1891 sensu Ma (1993) as Oreoderus maculipennis Gestro, 1891; Oreoderus quadricarinatus Arrow, 1944 sensu Ma (1995) as Oreoderus arrowi Ricchiardi, 2001; and Oreoderus crassipes Arrow, 1944 sensu Ma (1995) as the new species Oreoderus oblongus Li & Yang, sp. n. Moreover, Oreoderus momeitensis Arrow, 1910 sensu Ma (1995) is determined to be a new record of Oreoderus coomani Paulian, 1961 for China. As a result, Oreoderus humeralis Gestro, 1891, Oreoderus quadricarinatus Arrow, 1944, Oreoderus crassipes Arrow, 1944, and Oreoderus momeitensis Arrow, 1910 are to be excluded from the Chinese fauna.

Seven species are now known from China, including the three new species ( Oreoderus brevitasus Li & Yang, sp. n., Oreoderus dasystibialis Li & Yang, sp. n., and Oreoderus oblongus Li & Yang, sp. n.), plus a range extension ( Oreoderus coomani ). The three species previously known from China and confirmed in our study are Oreoderus arrowi , Oreoderus bidentatus , and Oreoderus maculipennis .