Corresponding author: Shulin Yang (
Academic editor: S. Lingafelter
A new species
According to the above characters, currently, there are totally nine species in the subgenus
Recently, specimens representing a new species of
The collection acronyms used in the text are as follows:
The name refers to the second elytral band which is gradually widening toward suture after mid-point.
Characters of the new species conform with all established characters of subgenus
Female (male unknown). Moderate body size, length 8.4–8.5 mm (holotype 8.4 mm), width 2.9–3.2 mm (measured across humeri, holotype 2.9 mm). Yellowish-brown, head, prothorax, swollen part of femurs black, antennae and tibiae lighter, basal part of elytra (ca 1/3 of total elytral length) reddish brown, the rest black, two subobliquely transverse ivory bands on each elytron.
Front nearly flat, transverse; head slightly concave between antennal tubercles which are slightly raised and separated by approximately the width of one antennal socket, front and vertex with sparse punctures and short yellow pubescences on some of these punctures; eyes coarsely-faceted; scape and antennomere 2 with semi-erect long yellow hairs, rest of the antennomeres covered with short dark brown hairs, antennomeres 2, 3 and 4 with sparse long yellow hairs especially at tips, relatively long yellow hairs also presenting at ends of antennomeres 5 to 10 but length gradually reduced by antenna segment; outer tips of antennomeres 6 to 10 slightly serrated.
Prothorax transverse, approximately 1.2 times wide as long, widest and slightly angulated laterally near middle, contracting towards base and narrowest at base; pronotum slightly convex, shining, with irregular punctures and covered with moderately long erect black setae; short thick pale yellow hairs at collar edge and base of pronotum, forming a narrow transverse strip at the base; prosternal intercoxal process short, spine shaped, not reaching coxal middle; scutellum reddish yellow, length longer than width, nearly rectangle, semicircular at end.
Elytron long, approximately 4 times as basal width, parallel sided, with rounded apex; basal third red brown area irregularly dense punctured, with erect hairs, a cluster of long erect brown hairs after scutellum; rest of the elytron covered with dense black hairs except two nearly transverse ivory bands and a narrow golden strip lengthwisely along suture between the two bands; the first ivory band extending from elytral margin, approximately half of elytron width, not reaching suture; the second ivory band slightly curving towards base, gradually widening towards suture after mid-point of elytron, nearly reaching suture but interrupted by the lengthwisely golden strip.
Femora strongly swollen, fore-femur swollen gradually from near fore-coxa, meso-femur and hind femur swollen after approximately half of femoral length; legs cover with moderately long thick pale golden hairs, hair on tibiae longer and darker than that on femora; non-swollen part of femora reddish brown, swollen parts black; 1st segment of hind tarsi short, approximately 1.2 times as long as 2nd and 3rd together.
Abdomen slightly shining with small punctures, with relatively sparse moderately long semi-erect pale yellow hairs.
Holotype ♀ from Heichong, Shibing County, Guizhou Province, CHINA, 2013.IV.17,
A modified key to
8 | Dark portions of elytra with two silvery white bands; first band subtransverse, not reaching suture | 9 |
– | Dark portions of elytra with two yellowish gray bands; first band arched; reaching suture; second band transverse; only hind femoral clubs pitchy | |
9 | Second elytral band subtransverse, reaching or nearly reaching suture, not caret symbol shaped | 10 |
– | Second elytral band oblique, not reaching suture, caret symbol shaped; front wrinkled with ridges | |
10 | Width of whole second elytral band roughly constant, not gradually widening towards suture | 11 |
– | Width of whole second elytral band not constant, gradually widening towards suture after middle | |
11 | First elytral band arcuate and acute angled as a caret symbol; ratio of femoral clubbed part to un-swelling femoral basal part smaller | |
– | First elytral band slightly bend smoothly, not acute angled as a caret symbol; ratio of femoral clubbed part to un-swelling femoral basal part larger |
The study is supported by the Research Foundation of Guizhou Normal University (Grant No. 11904-05032110004) and the Joint Fund of Guizhou Science and Technology Department and Guizhou Normal University (Grant No. 11904-0502211Y0106, 黔科合J字LKS[2011]38号). I thank Xinming Zhu, Jijun Chen, Zhenguo Xie, Yongfu Yu and Shengguo Yang of the Leigongshan National Natural Reserve for their help in the field work, and Vitali Nagirnyi, Maxim Smirnov and Francesco Vitali for their help on specimen determination. I also thank Guiqiang Huang for his help on literature. I thank two reviewers, Steven Lingafelter and Olivier Gregory, for their help to improve the manuscript.