Research Article |
Corresponding author: Shulin Yang ( shulin.yang@outlook.com ) Academic editor: Francesco Vitali
© 2019 Shulin Yang, Cha Wang.
This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Citation:
Yang S, Wang C (2019) Amamiclytus wuxingensis sp. nov. (Coleoptera, Cerambycidae), the third species of the genus from mainland China. ZooKeys 889: 57-63. https://doi.org/10.3897/zookeys.889.38909
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Amamiclytus wuxingensis sp. nov., the third species of the genus from mainland China, is described and illustrated with specimens collected from Wuxing Village, Leishan County, Guizhou Province, China. Distribution and grouping of the new species are discussed and the key to the East Asian species of the genus is updated to accommodate species recorded from mainland China.
longhorn beetle, Cerambycinae, Clytini, taxonomy
Amamiclytus Ohbayashi, 1964 (Cerambycidae, Cerambycinae, Clytini) is a genus of small-bodied longhorn beetles with black, glossy bodies and white pubescent maculations on the elytra (
Specimens were collected by net sweeping on a flowering bird cherry (Prunus sp.). Collected specimens were glued onto pinned paper cards. Labels were handwritten in Chinese. All materials, including the holotype, are preserved in the School of Life Sciences, Guizhou Normal University, Guiyang, China (
An AmScope SM-4TZ stereomicroscope was used for specimen observation and dissection. Photos for the adult habitus were taken using a Canon EOS 6D digital camera with a Canon MP-E 65 mm lens. Male genitalia were photographed with an Olympus DP22 under an Olympus SZX7 stereomicroscope.
Abbreviations for maculations consisting of white pubescence follow
Wuxing Village, Leishan County, Guizhou Province, China. 26°21.36'N, 108°01.82'E, altitude ca 1190 m.
Holotype
male, glued on paper card, with genitalia in a separate microvial. Original label: “中国贵州省雷山县五星村/蔷薇科稠李属植物/东经:108°01.82',北纬:26°21.36' / 2019年4月6日/杨书林采” [Wuxing Village, Leishan County, Guizhou Province, China / flowering bird cherry (Prunus sp.) / 26°21.36'N, 108°01.82'E. / 6 April 2019 / Shulin Yang leg.] (
Amamiclytus wuxingensis sp. nov. should be grouped into Group III proposed by
Amamiclytus wuxingensis sp. nov. can be distinguished from most of its congeners, including A. yulongi and A. limaticollis of the same group, by the La extending forward and reaching to S. The La does not extend toward and reach S in most of the other congeners.
Amamiclytus juni and Amamiclytus mimicus Holzschuh, 2018 also have La extending towards and reaching S as in A. wuxingensis sp. nov. A. wuxingensis sp. nov. differs from A. juni in the a) La is distinctly rounded arcuate while less rounded and obliquely turning from the middle of the elytron towards S in A. juni; b) Lp transverse while slightly arcuate in A. juni; c) Ps absent while present in A. juni; d) Mss sparse while completely absent in A. juni. Furthermore, characters of male genitalia, e.g., the widened part at the base of the parameres and the pointed apex of the dorsal plate of the median lobe, can be used to differentiate A. wuxingensis sp. nov. from A. juni. Tergite eight is as wide as sternite eight and its apex is concave at the middle in A. wuxingensis sp. nov. Tergite eight is much wider than sternite eight and its apex is truncate in A. juni.
Amamiclytus wuxingensis sp. nov. can be distinguished from A. mimicus by the absence of the white band on the pronotal base and the presence of a white band on the elytral apex. On the other hand, A. mimicus has a white band at the pronotal base but no white band on the elytral apex. The white spot behind the suture is short and the white band before the middle of elytra is distinctly arcuate in A. wuxingensis sp. nov., while they are long and obliquely transverse, respectively, in A. mimicus.
Male. Body (Fig.
The name of the new species, wuxingensis, refers to the type locality, Wuxing Village, Guizhou Province, China.
1 | Pronotum longer than wide, weakly or moderately arcuate at sides, usually provided with a white basal band | 2 |
– | Pronotum as long as wide, usually strongly arcuate at sides, without white pubescence along basal margin | 7 |
2 | Elytra glossy | 3 |
– | Elytra matted | 6 |
3 | Elytra provided with white spot near suture behind scutellum | 4 |
– | Elytra without white spot near suture behind scutellum | 5 |
4 | Elytra strongly glossy, white band on base of pronotum distinct, white band on mesosternal process almost absent | A. nobuoi Niisato & Han, 2011 |
– | Elytra slightly glossy, white band on base of pronotum not distinct, white pubescence on mesosternal process distinct | A. wenshuani Niisato & Han, 2013 |
5 | Elytra moderately glossy, without long pale hairs; frons distinctly longer than wide; erect pale hairs on hind tibiae sparse and not so long | A. subnitidus Niisato & Han, 2011 |
– | Elytra strongly glossy, scattered with a few erect long pale hairs; frons almost as long as wide; erect pale hairs on hind tibiae dense and long | A. setiger Niisato & Han, 2011 |
6 | Pronotum provided with a dense basal white band; elytra without white spots near suture behind scutellum | A. nubilus Niisato & Han, 2011 |
– | Pronotum only sparsely clothed with white pubescence near basal margin; elytra with a white spot near suture behind scutellum | A. hirtipes (Matsushita, 1940) |
7 | Ante-median white bands on elytra usually reaching white spot behind suture | 8 |
– | Ante-median white bands on elytra not reaching white spot behind suture | 9 |
8 | Ante-median white bands on elytra reaching white spot behind suture in a rather oblique way from middle of elytron; post-median white bands on elytra arcuate; prosternal process only with sparse hairs; mesosternal process without white hairs | A. juni Niisato & Han, 2011 |
– | Ante-median white bands on elytra strongly arcuate and reaching white spot behind suture; post-median white bands on elytra transverse, slightly oblique; prosternal process without white hairs; mesosternal process with sparse white hairs | Amamiclytus wuxingensis sp. nov. |
9 | Abdomen without lateral white bands on ventrites 3 and 4 | A. limaticollis (Gressitt, 1939) |
– | Abdomen with lateral white bands on ventrites 3 and 4 | A. yulongi Niisato & Han, 2011 |
This manuscript was funded by Guizhou Science and Technology Department (Grant No. 黔科合SY字 [2013]3170 and 黔科合J字LKS[2011]38号), Guizhou Human Resources and Social Security Department [黔人项目资助合同(2013)12号] and the National Science Foundation of China (31360435) to Shulin Yang. We thank Xianlin Zeng, Qingbei Weng and Qianquan Chen for help to access to microscope. We thank Tatsuya Niisato, Chang-do Han and Francesco Vitali for their help to improve this manuscript.