Abstract: Stenodryas ventralis (Gahan, 1906) is reported from China for the first time. A simple description of this newly-recorded species and a key to the Chinese species of the genus Stenodryas Bates is provided. The specimens examined are deposited in the Insect Collection of Southwest University

Chen Li

Tian Lichao

Xiong Sai

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Entomotaxonomia (2012) 34(2): 395–398                           ISSN 1000–7482 
A newly record species in the genus Stenodryas Bates 
(Coleoptera: Cerambycidae: Cerambycinae) from China  
XIONG Sai, TIAN Lichao, CHEN Li①  
College of Plant Protection, Southwest University, Chongqing Key Laboratory of Entomology & Insect 
Control Engineering, Chongqing 400716, China  
Abstract: Stenodryas ventralis (Gahan, 1906) is reported from China for the first time. A simple description of 
this newly-recorded species and a key to the Chinese species of the genus Stenodryas Bates is provided. The 
specimens examined are deposited in the Insect Collection of Southwest University. 
Key words: Coleoptera; Cerambycidae; Stenodryas; new record; China 
CLC number: Q969.511.4        Document code: A 
Article ID: 1000-7482(2012)02-0395-04 
中国瘦棍腿天牛属一新记录种（鞘翅目：天牛科：天牛亚科） 
熊  赛，田立超，陈  力
① 
西南大学植物保护学院，重庆市昆虫学及害虫控制工程重点实验室，重庆 400716 
摘要：记述中国瘦棍腿天牛属 1 新记录种：白腹瘦棍腿天牛 Stenodryas ventralis (Gahan, 1906)。简述了
该种的形态特征，提供了瘦棍腿天牛属中国已知记录种的检索表。研究标本保存在西南大学昆虫标本
馆。 
关键词：鞘翅目；天牛科；瘦棍腿天牛属；新记录；中国 
Introduction 
The genus Stenodryas was originally described by Bates in 1873, with Stenodryas 
clavigera Bates as its type species. About twenty-four species are included in the genus now, 
including S. albovittata Holzschuh, 2010; S. apicalis (Gahan, 1893); S. atripes (Pic, 1935); S. 
bicoloripes (Pic, 1922); S. clavigera clavigera Bates, 1873; S. clavigera impuncticollis 
Hayashi, 1974; S. clavigera insularis Yokoyama, 1966; S. cylindricollis Gressitt, 1951; S. 
fascipennis Holzschuh, 1984; S. filipinus Vives, 2009; S. fuscomaculatus Hayashi, 1977; S. 
glabricollis Holzschuh, 1991; S. inapicalis (Pic, 1922); S. leucophora Holzschuh, 2010; S. 
modestus (Gahan, 1906); S. nigromaculatus (Gardner, 1942); S. pallidata Holzschuh, 2006; S. 
punctatella Holzschuh, 1999; S. rufus (Pic, 1946); S. rugosula Holzschuh, 2003; S. suavis 
Holzschuh, 1998; S. tripuncata Gressitt & Rondon, 1970; S. unicolor Hüdepohl, 1994 and S. 
ventralis (Gahan, 1906) (Gahan 1906; Gressitt 1951, 1970; Holzschuh 1984, 1998, 1999,  
 
Received date: 30 Mar. 2012 
①Corresponding author, E-mail: lichen57@swu.edu.cn 
396  Entomotaxonomia (2012) 34(2): 395–398 
2010; Kusama et Takakuwa 1984; Hua et al. 2009; Vives 2009; Löbl & Smetana 2010). Only 
seven species have been reported in China. The genus Stenodryas is mainly distributed in 
China, India, Myanmar, Thailand, Indonesia and Laos. They have common characteristics as 
follows: eyes large; mesocoxal cavities laterally closed; antenna without spine, longer than 
body; prothorax longer than wide, base and apex narrow, not swollen; legs with femora 
pedunculate-clavate; scutellum triangular. 
S. ventralis (Gahan, 1906) was originally described by Gahan from Myanmar (formerly 
Burma) as Ceresium ventrale Gahan, 1906 (Gahan, 1906). Holzschuh revised it and 
transferred it to the genus Stenodryas Bates, 1873 (Holzschuh, 1984). In the present paper, this 
species is now found in Yunnan Province in China. 
Key to species of Stenodryas in China 
1. Elytra with stripe········································································································································· 2 
-. Elytra without stripe ···································································································································· 4 
2. Elytra with two oblique transverse bands························································································· S. suavis 
-. Only elytral apex with black spot ················································································································· 3 
3. Prothorax with a slightly raised impunctate area on median line just anterior to center···········S. cylindricollis 
-. Prothorax without a slightly raised impunctate area on median line ···········································S. bicoloripes 
4. Legs completely black ·············································································································S. punctatella 
-. Legs not completely black ··························································································································· 5 
5. Only hind femora black, differing from fore and middle femora ···················································S. ventralis 
-. Femora with same color······························································································································· 6 
6. Hind femora exceeds the apex of the elytra ·································································· S. clavigera insularis 
-. Hind femora does not exceed the apex of the elytra······················································································ 7 
7. Head with a few sparse punctures on occiput························································ S. clavigera impuncticollis 
-. Head with many punctures on occiput·········································································· S. clavigera clavigera 
Stenodryas ventralis (Gahan, 1906) (Figs. 1–6), new record to China  
Ceresium ventrale Gahan, 1906: 160, 1. 
Stenodryas ventralis Holzschuh, 1984: 347. 
Male. Length 8.0–11.0 mm; breadth l.5–2.0 mm. 
Body slender, pale yellowish-testaceous. The thorax and abdomen rather densely clothed 
with whitish pubescence. 
Head somewhat densely punctured with a shallow longitudinal trench. Eyes black, 
superior lobe smaller than inferior lobe. The area between antennal insertions and eyes densely 
covered with white pubescence. Antennae about one-third longer than the body; first segment 
densely punctate, shorter than the third; the third about one-third longer than the fourth, which 
is only half as long as the fifth. 
Prothorax nearly one-third longer than broad, sub-cylindrical, a little wider in the middle 
than towards each end; the surface impunctate and dull. Legs with femora pedunculate-clavate. 
Fore and middle femora brown, hind femora black. First hind tarsal segment about as long as 
next two combined. 
Scutellum densely covered with white pubescence. Elytra rather densely punctate, and 
very sparsely pubescent; the punctures very minute on the apical third and larger and more 
distinct anteriorly. Sides subparallel, gradually slightly narrowing apically. Basal fourth of 
  
Xiong et al. A newly record species in the genus Stenodryas Bates from China  397 
elytral suture black. 
Hindwing. In this paper, the venation terms we use follow the nomenclature proposed by 
Kukalová-Peck & Lawrence, 1993. Colorless and transparent; MP3+4 forks into MP3 and MP4, 
MP3+4 weak; R4 straight; MS curve; A3+4 weaker than Cu. 
Genital organs (male). lateral lobes short, apex narrow, apical and lateral margin with 
short setae; roof short; ring long, merged at terminal; median lobe and median struts curved; 
median struts about 1.4 times longer than median lobe; apex of median lobe pointed; median 
struts apart; internal sac about as long as median lobe and median struts combined. 
Distribution. China (Yunnan: Jinghong City, Baoshan City); Myanmar. 
Specimen examined: 1♂, China: Yunnan, Jinghong City, 25-V-2011, collected by 
Lichao TIAN; 1♂, Baoshan City, 18-V-2011, collected by Guiqiang HUANG. 
 
Figures 1–6. Stenodryas ventralis. 1. Dorsal view; 2. Ventral view; 3. Hind wing; 4. Genital organs of male, 
ventral view; 5. Tegmen, dorsal view; 6. Median lobe, ventral view. 
Acknowledgements 
This research was supported by the Ministry of Science and Technology of China 
(2006FY120100). 
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A newly record species in the genus Stenodryas Bates (Coleoptera: Cerambycidae: Cerambycinae) from China

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A newly record species in the genus Stenodryas Bates (Coleoptera: Cerambycidae: Cerambycinae) from China

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