One new and seven newly recorded Callichromatini species from China (Coleoptera, Cerambycidae, Cerambycinae)

Abstract One new species, Schwarzerium yunnanum sp. n. is described from Yunnan Province, China. And a new subgenus Rugosochroma subgen. n. is erected for it. Additionally, Seven species of the tribe Callichromatini are newly recorded from China: Aphrodisium niisatoi Vives & Bentanachs, 2007, Aphrodisium tricoloripes Pic, 1925, Chelidonium violaceimembris Gressitt & Rondon, 1970 (new from Vietnam too), Chloridolum grossepunctatum Gressitt & Rondon, 1970 (new from Vietnam too), Chloridolum semipunctatum Gressit & Rondon 1970, Embrikstrandia vivesi Bentanachs, 2005 and Laosaphrodisium subplicatum (Pic, 1937).


Introduction
The recent visit of the first author to the IZAS Collection (Institute of Zoology, Chinese Academy of Sciences, Beijing), enabled the identification of many Callichromatini species along with interesting observations, some of them described in this work. The short, thick, slightly bent apically. Labrum trapezoidal, free, covered by fossulae and abundant golden setae. Eyes microfaceted, weakly protruding; upper lobe much smaller than lower. Antennae long, covered by long black setae and reaching apical 1/5 of elytra in males and apical quarter in females; segments saw-like beyond fifth antennomere, each segment (except first and second) with strong longitudinal outer margin demarcating two longitudinal porous areas.
Pronotum transverse (17:24), with strong transverse anterior depression on disc and two posterior transverse medially prominent humps; anterior border simple, posterior border weakly margined; sides armed with short median smooth bulge and smaller protuberance close to anterior angle; surface of pronotum strongly punctured, with golden setae at sides. Prosternum nearly smooth, shiny, with transverse striation at anterior half; prosternal process broad, punctured, expanded posteriorly to enclose procoxal cavities behind. Mesoventrite short, transverse, strongly punctured, wide between mesocoxae. Metaventrite longitudinally furrowed, finely punctured, covered by dense silvery white pubescence. Abdominal ventrites rather smooth and glossy, weakly punctured, sparsely pubescent; puncturation on pygidium stronger.
Diagnosis. This new species is similar to Schwarzerium provosti (Fairmaire) in its golden coloration and rough pronotum, but S. yunnanum can be distinguished by the smaller size, elytra more parallel, and very short unicolor legs without clubshaped mesofemora. It differs from every other species in the genus Schwarzerium Plavilstshikov in the second metatarsomere not compressed. Based on the divergence in this character, together with the distinctive shape of mesofemora, we propose to establish a new subgenus, Rugosochroma subgen. n. (noun, masculine), with S. yunnanum sp. n. as the subgeneric type.
Etymology. The species is named after the type locality "Yunnan". Remarks. This is a very rare species only known from China, Myanmar and Vietnam. It is close to Aphordisium cribricolle Poll, 1890, but can be separated by the morphological feature of pronotum and the typical color of the legs. Chelidonium violaceimembris Gressitt & Rondon, 1970: 151, fig. 26 d. Remarks. This is a typical oriental species. Very common in Laos and Vietnam and should be common in South China too. Remarks. This is a small species described from Laos and it is very common in North Vietnam. Laosaphrodisium subplicatum (Pic, 1937) http://species-id.net/wiki/Laosaphrodisium_subplicatum Figs 15-16 Chelidonium gibbicolle v. subplicatum Pic, 1937: 11. Aphrodisium (s. str.) subplicatum; Gressitt and Rondon 1970: 149, fig. 25 i. Chelidonium subplicatum;Podaný 1974: 7, 42. Laosaphrodisium subplicatum;Bentanachs 2012: 81. Remarks. This species was originally described as a variety of Chelidonium gibbicolle by Pic (1937). Gressitt and Rondon (1970) treated it as a species and combined it to the genus Aphrodisium. However, it was transferred to the genus Laosaphrodisium Bentanachs (2012) based on the following characters: body dull green, without yellow bands, discal area of pronotum with two longitudinal stripes of black pubescence.
Although Bentanachs (2012) wrote "China (Yunnan, Gressitt 1950)" under the distribution of this species, it was a big mistake (personal communication with Bentanachs in Dec. 2012). Gressitt did not report any record of subplicatum from China and Bentanachs did not examined any specimens from Yunnan. The reliable locality from China is only Guizhou up to now. Yunnan is a possible locality but it need the confirmation of specimens. collections, offering pictures and the loans of specimens. We thank Joan Bentanachs (CJBB) for the discussion on Laosaphrodisium subplicatum and Steven W. Lingafelter (National Museum of Natural History, Washington, USA) for improving this manuscript. This research was supported by the National Natural Science Foundation of China (No. 31000967 & J1210002), and a grant (No. O529YX5105) from the Key Laboratory of the Zoological Systematics and Evolution of the Chinese Academy of Sciences.