中国科技论文在线 Species of the Genus Condylostylus from Vietnam
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中国科技论文在线 http://www.paper.edu.cn Species of the genus Condylostylus from Vietnam (Diptera: Empidoidea, Dolichopodidae)# YANG Ding, LI Xuankun, LIU Xingyue** 5 (Department of Entomology, College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193) Abstract: The following two species of the genus Condylostylus are reported from Vietnam for the first time: Condylostylus luteicoxa Parent and Condylostylus ornatipennis (De Meijere). A key to the species of the genus Condylostylus from Vietnam is presented. This genus is mainly distributed in the 10 tropical regions and characterized by the following features: 1 strong vt arising from distinct setose mound on frons; 2-3 pairs of long acr; both sexes with 4-5 strong dc; 2 pairs of strong sc; M1 strongly bent, nearly in right angle; hypandrium often short and broad, its lateral arm reduced or absent. Condylostylus luteicoxa is characterized by all coxae yellow except mid coxa with one black outer stripe, all femora yellow except extreme tips of hind femur blackish, mid tibia apically and tarsus 15 entirely with row of crocheted ad, and male cercus long strip-like. Condylostylus ornatipennis is characterized by all coxae black, all femora black except tips of fore and mid femora and extreme tip of hind femur, fore and hind femora with hair-like v longer than femur thickness, and male cercus long strip-like with thick base. Keywords: Entomology; Diptera; Empidoidea; Dolichopodidae; Condylostylus; Vietnam 20 0 Introduction Condylostylus Bigot is a large genus in the subfamily Sciapodinae with 262 known species worldwide, most of which are restricted in the Neotropical Region (Yang et al. 2006) [1]. The major references dealing with the Oriental species of Condylostylus are Becker (1922) [2], Bickel 25 (1994) [3], Yang (1995, 1998) [4, 5], Zhu and Yang (2007) [6], Yang et al. (2011) [7], and Wang et al. (2012) [8]. A key to Oriental and East Palaearctic species of Condylostylus was gave by Bickel (1994) [3], and the Chinese species of Condylostylus was reviewed by Yang et al. (2011) [7]. Six species of the genus Condylostylus were known to occur in Vietnam (Li et al., 2012) [9]. Here two species of the genus Condylostylus, Condylostylus luteicoxa Parent and Condylostylus 30 ornatipennis (De Meijere), are reported from Vietnam for the first time. These two species are also redescribed and reillustrated in details for the first time. A key to the species of the genus from Vietnam is provided for the convenience of the identification. 1 Material and Methods Specimen examined are deposited in the Entomological Museum of China Agricultural 35 University, Beijing (CAU). Terminology follows Bickel (1994) [3]. The following abbreviations are used: acr – acrostichal seta(e), d – dorsal seta(e), dc – dorsocentral seta(e), ih – inner humeral seta(e), LI – fore leg, LII – mid leg, LIII – hind leg, npl – notopleural seta(e), oc – ocellar seta(e), pd – posterodorsal seta(e), ph – posthumeral seta(e), psa – postalar seta(e), sa – supraalar seta(e), su – sutural seta(e), sc – scutellar seta(e), vt – vertical seta(e). 40 2 Taxonomy Genus Condylostylus Bigot, 1859 Condylostylus Bigot, 1859: 215. Type species: Psilopus bituberculatus Macquart, 1842 (original designation) [10]. Foundations: Doctoral Program of Higher Education of China (Nos. 20090008110016, 20090008120019); National Natural Science Foundation of China (Nos. 31272354, 31210103044) Brief author introduction:YANG Ding, (1962-), male, professor, insect taxonomy. Correspondance author: LIU Xingyue, (1981-), male, associate professor, insect taxonomy.E-mail: [email protected] - 1 - 中国科技论文在线 http://www.paper.edu.cn Diagnosis. 1 strong vt arising from distinct setose mound on frons; arista dorsal, sometimes 45 dorsoapical. 2-3 pairs of long acr; both sexes with 4-5 strong dc; 2 pairs of strong sc. Fore coxa with 3 strong distolateral bristles; fore tibia usually without strong bristle; mid tibia with distinct ad and pd. Wing sometimes with characteristic maculation as follows: wing brown, but posterior portion pale, and with a white spot near crossvein m-cu; M1 strongly bent, nearly in right angle; crossvein m-cu straight. Tergum 7 well developed, but sternum 7 strongly reduced and 50 membranous; hypopygium often relatively small compared with other Sciapodinae; hypandrium often short and broad, its lateral arm reduced or absent; aedeagus band-like in lateral view; epandrial lobe not developed; cercus usually simple, commonly elongate and filiform, but sometimes clavate and expanded. Remarks. For list of synonymy of the genus, see Yang et al. (2006) [1]. 55 Key to species of Condylostylus from Vietnam 1. At least mid and hind coxae brown or black................................................................................. 2 All coxae yellow …...................................................................................................................... 7 2. Fore coxa yellow …...................................................................................................................... 3 60 Fore coxa black …........................................................................................................................ 4 3. Wing dark brown with distinct white opaque window; fore coxa with numerous short setae on inner surface; cercus much elongated (7–8 times as long as epandrium), and without setose ventral process ….............................................................. C. damingshanus Wang, Zhu et Yang Wing brown to dark brown but without distinct white window; fore coxa without such setae on 65 inner surface; cercus rather short (little longer than epandrium), with short ventral process bearing long setae .......................................................................... C. vietnamensis Li, Li et Yang 4. Cercus wide band-like or nearly finger-like; fore tarsomere 1 not flattened basally; all femora entirely black, or at most with extreme tips of femora brownish yellow or brown ..................... 5 Cercus expanded and hatchet-shaped; fore tarsomere 1 basally flattened; all femora black with 70 yellow apices .................................................................................................. C. latipennis Parent 5. Cercus thin finger-like, slightly longer than epandrium, much extending beyond apex of surstylus ..................................................................................................................................… 6 Cercus wide band-like, slightly shorter than epandrium, not extending much beyond apex of surstylus …................................................................................................. C. conspectus Becker 75 6. Halter yellow; cercus with distinctive setose ventral mound ..................… C. fenestratus (Wulp) Halter dark brown; cercus without distinctive setose ventral mound …......................................... .......................................................................................................... C. ornatipennis (De Meijere) 7. Cercus short, geniculate ….................................................................................... C. geniculatus Yang Cercus long, strip-like ...................................................................................... C. luteicoxa Parent 80 1. Condylostylus conspectus Becker, 1922 Condylostylus conspectus Becker, 1922: 225. Type locality: India: Calcutta, and Unchagoan, Naini Tal District, base of W Himalayas [2]. Condylostylus nigrosetosus Parent, 1937: 142. Type locality: India [11]. 85 Diagnosis. All coxae and femora black except extreme tips of femora brownish yellow or brown. Cercus long band-like, apically with an incision. Specimen examined. 1 male, Vietnam, Dak Lak, Yok Don National Park, 200 m, 2012.V.9, Weihai Li. - 2 - 中国科技论文在线 http://www.paper.edu.cn Distribution. Bangladesh, China, India, Myanmar, Nepal, Thailand, Vietnam. 90 2. Condylostylus damingshanus Wang, Zhu et Yang, 2012 Condylostylus geniculatus Wang, Zhu et Yang, 2012: 376. Type locality: China: Guangxi, Damingshan [8]. Diagnosis. Apical one-sixth of hind femur blackish. Fore coxa with numerous short setae on inner surface. Fore and mid femora each with row of pale yellow hair-like pv (longest pv longer 95 than femur thickness). Fore tarsomeres 2–4 with row of crocheted pv. Male cercus very long, nearly reaching base of abdomen. Specimen examined. 1 male, Vietnam,Vinh Phuc, Tam Dao National Park, 1010 m, 2012.V.17, Xingyue Liu. Distribution. China, Vietnam. 100 3. Condylostylus fenestratus (Wulp, 1892) Psilopus fenestratus Wulp, 1892: 200. Type locality: Indonesia: Java[12]. Diagnosis. Wing largely gray, with median pale spot indistinct. All coxae and femora black. Cercus with two ventral denticles, with dense ventral setulae on apical two-thirds. Specimen examined. 1 male, Vietnam, Hoa Binh, Mai Chau, Tan Son, 1000 m, 2012.IV.27, 105 Xingyue Liu. Distribution. China, Indonesia, Malaysia, Vietnam. 4. Condylostylus geniculatus Yang, 1998 Condylostylus geniculatus Yang, 1998: 184. Type locality: China: Sichuan, Emeishan[5]. Diagnosis. Legs including all coxae yellow except tarsomeres 2–5 dark brown. Cercus 110 geniculate in shape. Specimens examined. 3 males 7 females, Vietnam, Lam Dong, Lac Duong, Da Chais, Giang Ly, 2011.VII.7, Guoquan Wang; 3 males 6 females, Vietnam,Thua Thien Hue, Phu Loc, Bach Ma National Park, 520 m, 2012.V.4, Xingyue Liu; 3 males 7 females, Vietnam, Lam Dong, Lac Duong, Bidoup Nui Ba National Park, Giang Ly Station, 1455 m, 2012.V.11,