Thagria circumcincta (Jacobi)

Fan, Zhi-Hua, Li, Zi-Zhong & Dai, Ren-Huai, 2015, Taxonomic study of the leafhopper genus Thagria Melichar (Hemiptera: Cicadellidae: Coelidiinae) from Guangxi, China, Zootaxa 3918 (4), pp. 451-491 : 458

Thagria circumcincta (Jacobi)

( Figs. 38–49 )

Jassus circumcincta Jacobi 1944: 50

Coelidia circumcincta (Jacobi) , Metcalf 1964: 45

Thagria circumcincta (Jacobi) , Nielson 1977: 83 –85, Figs. 289–294; Li & Wang 1991: 122; Li 1993: 30; Zhang 1994: 38, Fig. 33 , after Nielson; Nielson 2013: 83

Distribution. China (Guangxi, Sichuan, Guizhou, Yunnan, Fujian, Guangdong, Hainan).

Material examined. 1 ♂, CHINA: Guizhou, Daozhen, Xiannvdong, 25–27 May 2004, coll. Zhang Bin & Xu Pian; 1 ♂, CHINA: Guizhou, Kuankuoshui, Chachang, 6–9 June 2010, coll. Li Yujian; 1 ♂, CHINA: Guangxi, Damingshan, 5–10 Aug. 2011, coll. Yang Zaihua; 1 ♂, CHINA: Fujian, Sanming, Tianbaoyan, 18 May 2012, coll. Yang Weicheng; 1 ♂, CHINA: Fujian, Wuyishan, 24 May 2012, coll. Long Jiankun; 2 ♂, CHINA: Hainan, Jianfengling, Tianchi, 6 April 2013, coll. Long Jiankun; 1 ♂, CHINA: Guizhou, Fanjingshan, 20 May 2013, coll. Yang Weicheng ( GUGC).

Variation. Based on the examined specimens, paraphysis in lateral view varies from slightly curved ( Fig. 46 ) (Guangxi, Hainan and Fujian) to straight ( Fig. 49 ) (Guizhou), subapical area elevated ( Fig. 46 ) (Guangxi and Fujian) or flat ( Fig. 49 ) (Guizhou and Hainan); the length ratio of the two apical processes is about 1:1.5 (Guangxi, Hainan) or 1:2 (Guizhou, Fujian), and may be mirror images in different specimens ( Figs. 45–46, 48–49 ).

Remarks. This species was placed in Thagria by Nielson (1977), and redescribed from the holotype (female) from MAK (Zoologisches Forschungsinstitut und Museum Alexander Koenig, Bonn, West Germany). It is similar to T. asperitas Nielson, 2013 in male genitalia features, but differs in having black patches on the forewing ( Fig. 39 ) and the pronotum without a median longitudinal carina ( Fig. 40 ); T. asperitas has the forewing translucent light brown, without marking, and the pronotum with a median longitudinal carina ( Nielson 2013: 42, Plate 1B). It also resembles T. biprocessa Fan & Dai , sp. nov., but differs in having the forewing markings black ( Fig. 39 ), not ivory as in T. biprocessa ( Fig. 7 ), and the pygofer processes apex pointed ( Fig. 42 ), not bluntly rounded as in T. biprocessa ( Fig. 10 ).

Figures

FIGURES 38 – 49. Thagria circumcincta. 38 – 47 from Guangxi: 38. habitus, dorsal view; 39. habitus, lateral view; 40. head and thorax, dorsal view; 41. face; 42. pygofer, lateral view; 43. dorsal connective, pygofer and segment X processes, dorsal view; 44. subgential plate, lateral view; 45. aedeagus, paraphysis, connective and style, dorsal view; 46. aedeagus and paraphysis, lateral view; 47. style, lateral view. 48 – 49 aedeagus and paraphysis from Guizhou: 48. dorsal view; 49. lateral view. Scale bars: 38 – 41 = 1.0 mm; 42 – 49 = 0.5 mm.

FIGURES 26 – 37. Thagria bispina. 26 – 35 from Guizhou, Maolan: 26. habitus, dorsal view; 27. habitus, lateral view; 28. head and thorax, dorsal view; 29. face; 30. pygofer and segment X ventral process, lateral view; 31. dorsal connective, pygofer and segment X processes, dorsal view; 32. subgential plate, lateral view; 33. aedeagus, paraphysis, connective and style, dorsal view; 34. aedeagus and paraphysis, lateral view; 35. style, lateral view. 36 – 37 aedeagus and paraphysis from Guizhou, Wengang: 36. dorsal view; 37. lateral view. Scale bars: 26 – 29 = 1.0 mm; 30 – 37 = 0.5 mm.

FIGURES 6 – 15. Thagria biprocessa Fan & Dai, sp. nov. Holotype: 6. habitus, dorsal view; 7. habitus, lateral view; 8. head and thorax, dorsal view; 9. face; 10. pygofer, lateral view; 11. dorsal connective, pygofer and segment X processes, dorsal view; 12. subgential plate, lateral view; 13. aedeagus, paraphysis, connective and style, dorsal view; 14. aedeagus and paraphysis, lateral view; 15. style, lateral view. Scale bars: 6 – 9 = 1.0 mm; 10 – 15 = 0.5 mm.