ZooKeys 415: 329–336, doi: 10.3897/zookeys.415.6349
Note on brachypterous Stenochiini from China (Coleoptera, Tenebrionidae) with description of a new species
Cai-Xia Yuan 1,2,†, Guo-Dong Ren 1,‡
1 College of Life Sciences, Hebei University, Baoding 071002, China
2 College of Life Sciences, Yan’an University, Yan’an 716000, China

Corresponding author: Guo-Dong Ren (gdren@hbu.edu.cn)

Academic editor: P. Bouchard

received 30 September 2013 | accepted 29 January 2014 | Published 12 June 2014
(C) 2014 Cai-Xia Yuan. 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.
For reference, use of the paginated PDF or printed version of this article is recommended.

Citation: Yuan C-X, Ren G-D (2014) Note on brachypterous Stenochiini from China (Coleoptera, Tenebrionidae) with description of a new species. In: Bouchard P, Smith AD (Eds) Proceedings of the Third International Tenebrionoidea Symposium, Arizona, USA, 2013. ZooKeys 415: 329–336. doi: 10.3897/zookeys.415.6349


A checklist of 29 brachypterous species in the tenebrionid tribe Stenochiini is given for China and neighboring countries. A new species is described and illustrated under the name of Strongylium liangi sp. n. (CHINA: Yunnan). Also, some new distribution data is provided for S. claudum (Gebien, 1914), and a distribution map of all Strongylium species in the checklist is presented.


Tenebrionidae, Stenochiini, Strongylium, new species, China


The East Asian brachypterous species of the tenebrionid tribe Stenochiini, including 14 species/subspecies in four genera, were revised by Masumoto (1999). Later, more species and genera were added or transferred to this group by Ando (2003), Masumoto (2006), Yuan and Ren (2006), Masumoto et al. (2007), Löbl et al. (2008), Ando and Nakahama (2009), and Masumoto et al. (2013). This group currently includes six genera and 28 species/subspecies, of which 13 species/subspecies in four genera are known to occur in China. In the present study, a new brachypterous species of Strongylium from Yunnan, China is described, Strongylium liangi sp. n. The checklist of the brachypterous species of the tribe Stenochiini from China and neighboring countries is updated and a distribution map of the Strongylium species is provided, including new distribution data for Strongylium claudum (Gebien, 1914).

Material and methods

Specimens were examined and illustrated under a Nikon (SMZ800) dissecting microscope (equipped with a camera lucida), illustrations were processed using the software (CorelDRAW X3). Measurements were taken using a Leica (M205 A) dissecting microscope. Habitus photographs were taken with a Nikon (D 300S) camera. The distribution data in Figure 1 are derived from examined specimens and literature records. The holotype of Strongylium liangi sp. n. is deposited in the Institute of Zoology, Chinese Academy of Sciences, Beijing, China (IZCAS). All other materials are in the Museum of Hebei University, Baoding, China (MHBU).

Figure 1.

Distribution of brachypterous species of the genus Strongylium Kirby from China and neighbouring countries: 1 Strongylium becvarianum Masumoto 2 Strongylium claudum (Gebien) 3 Strongylium habashanense habashanense Masumoto 4 Strongylium habashanense lijiangense Masumoto 5 Strongylium jizushanense Masumoto 6 Strongylium liangi sp. n. 7 Strongylium marseuli marseuli Lewis 8 Strongylium marseuli watanabei Nomura & Yamazaki 9 Strongylium marseuli nigripes Nomura & Yamazaki 10 Strongylium masatakai Masumoto, Lee & Akita 11 Strongylium tanakai Ando 12 Strongylium wuyishanense Yuan & Ren.

The following measurements are used in the text, with all measurements in millimeters: body length: length of the body from the anterior edge of the clypeus to elytral apex; body width: length of the maximal elytral width; pronotal length: length of the pronotum along the midline; pronotal width: maximum width of the pronotum; elytral length: length of the elytra from the base of the scutellum to the elytral apex along the suture.

Type specimen.

Holotype male: China, Yunnan, Lushui county, Pianma town, Yakou, 19.v.2005, Hong-Bin Liang leg. (IZCAS).


The new species is similar to Strongylium tanakai Ando, 2003, from Japan because their humeri are more developed than other brachypterous species of Strongylium, such as Strongylium claudum (Fig. 11) and Strongylium wuyishanense, but can be distinguished from the latter by its stouter body, the distance between the eyes being narrower than the transverse diameter of an eye, and the shape of the aedeagus, that is obliquely narrowed apically in dorsal view, slightly curved in lateral view.


Named in honor of Dr. Hong-Bin Liang, collector of the holotype.


Male (Figs 210). Body length 14.4 mm, elongate, slightly wider posteriorly. Colour dark brownish black, pronotum reddish, antennae and legs dark reddish brown, tarsi slightly lighter; head, antennae and pronotum almost dull, elytra shining; body surface almost glabrous except antennae, tarsi and ventral surface. Head (Fig. 2) subhexagonal, densely punctate; clypeus transverse, slightly and gradually declined forward in basal part, strongly bent ventrad in apical part, truncate at anterior edge; frontoclypeal suture deeply depressed; genae obliquely raised, with outer margins obtusely produced; frons somewhat widely T-shaped, steeply inclined anteriorly, slightly, longitudinally impressed in middle, surface irregularly and finely punctate, punctures often fused with one another, distance between eyes 0.66 times as wide as transverse diameter of an eye in dorsal view. Eyes medium-sized, rather protruding. Antennae (Fig. 4) subfiliform, reaching basal 1/5 of elytra, ratio of the length of antennomeres II–XI as 0.31 : 1.02 : 0.76 : 0.58 : 0.63 : 0.65 : 0.56 : 0.53 : 0.54 : 0.67. Maxillary palpomere IV (Fig. 5) moderately expanded. Pronotum (Fig. 3) 1.06 times as wide as long, widest before the middle; anterior margin bordered, border tapering laterad; posterior margin bisinuate, bordered; both sides steeply inclined downwards, lateral margins arcuate anteriorly, obliquely narrowed at posterior one-third, bordered along entire length; anterior angles rounded, posterior angles subrectangular; disc moderately convex, shallowly impressed near anterior margin, densely covered with confluent, ocellate punctures. Scutellum triangular, densely and rugosely punctate. Elytra elongate ovoid, slightly dilated posteriorly, 2.11 times as long as wide, widest at apical one-third, 3.68 times as long as and 1.62 times as wide as pronotum; disc slightly convex, striae fine, strial punctures circular and fine anteriorly, becoming finer and nearly disappearing apically; intervals slightly convex, flattened apically, sparsely covered with microscopic granules at posterior 1/4; humeri moderately swollen, hind wings reduced, reaching basal 3/4 of elytra. Prosternum narrow, strongly raised between coxal cavities, impressed in middle, prosternal process strongly declined to roundly produced and protruding at apex. Abdominal ventrites (Fig. 7) covered with microscopic punctures and setae, ventrite V with dense punctures and setae, setae longer than those on I–IV. Legs slender, simple, length ratio of metatarsomeres I–IV as 2.01 : 1.03 : 0.68 : 1.44. Aedeagus 2.48 mm long, 0.5 mm wide (Figs 8–9).

Figures 2−9.

Strongylium liangi sp. n. 2 head 3 pronotum 4 antennae 5 maxillary palp 6 hind tibia 7 abdominal ventrite V 8 aedeagus in dorsal view 9 aedeagus in lateral view. Scales: 1 mm.

Figures 10−11.

Habitus. 10 Strongylium liangi sp. n. 11 Strongylium claudum (Gebien, 1914).

Female: unknown.

Strongylium claudum (Gebien, 1914)


Fig. 11
Crossoscelis clauda Gebien, 1914: 53
Strongylium claudum: Masumoto, 1999: 121.
Material examined.

1♂, Taiwan, Kaohsiung, Xiaoguanshan, 10.xii.1996, Wen-Yi Zhou leg.; 1♂, 1♀, Taiwan, Kaohsiung, Tengzhi, 1.xi.2008, Chang-Qing Chen leg.; 1♂, Taiwan, Pingtung, Erjituan, 5.iv.1997, Wen-Yi Zhou leg.; 1♀, Taiwan, Nantou, Ren’ai, qingjing, 1890 m, 7.v.1996, Wen-Yi Zhou leg.; 1♀, Taiwan, Taipei, Sanxia town, 24.v.1994, Wen-Yi Zhou leg.


China: Taiwan.

Strongylium wuyishanense Yuan & Ren, 2006


Strongylium wuyishanense Yuan & Ren, 2006: 852.
Type material examined.

Holotype: 1♂ (MHBU), China, Fujian, Mt. Wuyi, Huanggangshan, 21.v.2004, Cai-Xia Yuan & Jing Li leg.


China: Fujian.

A checklist of brachypterous species of the tribe Stenochiini from China and neighbouring countries
  1. Eucrossoscelis Nakane, 1963 [Type species: Eucrossoscelis broscosomoides Nakane, 1963]

    1. (1) Eucrossoscelis araneiformis (Allard, 1876: 67), Japan (Nagasaki, Ryushu), (= Strongylium helopioides Lewis, 1894: 482) [Originally in Helops?; synonymized by Chûjô 1985: 65]

    2. (2) Eucrossoscelis broscosomoides Nakane, 1963: 29, Japan (Amami-Oshima Is.)

    3. (3) Eucrossoscelis hastatus Yuan & Ren, 2006: 851, China (Guizhou)

    4. (4) Eucrossoscelis michioi Chûjô, 1978: 78, Japan (Okinawa-jiama)

    5. (5) Eucrossoscelis maruyamai Masumoto, 1999: 121, Japan (Ryukyu Islands)

  2. Saitostrongylium Masumoto, 1996 [Type species: Saitostrongylium acco Masumoto, 1996]

    1. (6) Saitostrongylium acco Masumoto, 1996: 34, Vietnam (Lai Chau)

  3. Stenochinus Motschulsky, 1860 [Type species: Stenochinus reticulatus Motschulsky, 1860]

    1. (7) Stenochinus akiyamai Masumoto, Akita & Lee, 2013: 266, China (Taiwan)

    2. (8) Stenochinus amplus (Gebien, 1914: 8), China (Taiwan) [Originally in Dicraeosis]

    3. (9) Stenochinus bacillus (Marseul, 1876: 103), Japan (Nagasaki (type locality), Honshu, Shikoku, Kyushu, Okinoshima Is., Kochi Pref. and Ysushima Is.) [Originally in Dicraeosis]

    4. (10) Stenochinus datangla (Merkl, 1992: 273), Vietnam (Lam Dong) [Originally in Dicraeosis]

    5. (11) Stenochinus furcifer (Shibata, 1980: 73), China (Taiwan) [Originally in Dicraeosis]

    6. (12) Stenochinus mysticus Masumoto, Akita & Lee, 2013: 268, China (Taiwan)

    7. (13) Stenochinus unicornis (Shibata, 1980: 68), China (Taiwan) [Originally in Dicraeosis]

  4. Strongylium Kirby, 1819 [Type species: Strongylium chalconotum Kirby, 1819]

    1. (14) Strongylium becvarianum Masumoto, 1999: 119, Thailand (Mae Hong Son)

    2. (15) Strongylium claudum (Gebien, 1914: 53), China (Taiwan) [Originally in Crossoscelis]

    3. (16) Strongylium habashanense habashanense Masumoto, 1999: 114, China (Yunnan)

    4. (17) Strongylium habashanense lijiangense Masumoto, 1999: 115, China (Yunnan)

    5. (18) Strongylium jizushanense Masumoto, 1999: 116, China (Yunnan)

    6. (19) Strongylium liangi sp. n., China (Yunnan)

    7. (20) Strongylium marseuli marseuli Lewis, 1894: 481, Japan (Nagasaki (type locality), SW Honshu, Oki Is., Kyushu, Tsushima, Hirado-jima, Gotô Islands, Koshiki-jima Is., Tanegashima, Ôsumi-kuroshima, Yakushima), (= apterum Nomura & Yamazaki, 1960: 14) [synonymized by Nakane 1975: 162]

    8. (21) Strongylium marseuli nigripes Nomura & Yamazaki, 1960: 15, Japan (Hachijô-jima of the Izu Islands)

    9. (22) Strongylium marseuli watanabei Nomura & Yamazaki, 1960: 15, Japan (Shikoku)

    10. (23) Strongylium masatakai Masumoto, Lee & Akita, 2007: 156, China (Taiwan)

    11. (24) Strongylium tanakai Ando, 2003: 79; Ando & Nakahama, 2009: 37 (male), Japan (Hyogo (type locality), Yamaguchi)

    12. (25) Strongylium wuyishanense Yuan & Ren, 2006: 852, China (Fujian)

  5. Uenomisolampidius Masumoto, 1996 [Type species: Uenomisolampidius shunichii Masumoto, 1996]

    1. (26) Uenomisolampidius shunichii Masumoto, 1996: 36, Vietnam (Ha Tay)

  6. Uenostrongylium Masumoto, 1999 [Type species: Cryptobates laosensis Pic, 1928]

    1. (27) Uenostrongylium becvari Masumoto, 2006: 70, China (Guizhou)

    2. (28) Uenostrongylium hunanense Masumoto, 2006: 72, China (Hunan)

    3. (29) Uenostrongylium laosensis (Pic, 1928: 26), Laos (type locality), Vietnam


We are grateful to Dr. Hong-Bin Liang (IZCAS) for collecting the holotype of Strongylium liangi, Mrs. Xiu-Juan Yang (MHBU) for her help in operating the GIS and Dr. Yu-Xia Yang (College of Life Sciences, Hebei University) for her suggestions in improving our manuscript. Thanks are also due to Dr. Ottó Merkl (Hungarian Natural History Museum), editor and an anonymous reviewer for their important comments and corrections. The study is supported by the National Natural Foundation of China (No. 31093430) and the High-level university construction projects funded projects of Shaanxi Province (No. 2012SXTS03).

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