Thagria biprocessa Fan & Dai

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 : 457

Thagria biprocessa Fan & Dai sp. nov.

( Figs. 6–15 )

Description. Body length of male 7.0 mm, female unknown.

Body medium, slender ( Fig. 6 ). Crown yellowish brown, with one brown spot on each side of coronal suture; ocelli and eyes brown ( Fig. 8 ). Face with clypeus with base brown laterally, apically yellow; clypellus with apex brown medially, remainder of face yellow ( Fig. 9 ). Pronotum dark brown, covered with light brown nubs ( Fig. 8 ). Mesonotum brown ( Fig. 8 ). Forewing dark brown with transparent ivory spots, venation black ( Figs. 6, 7 ).

Head fore margin arced, crown wider than eye width, portion beyond eyes about 1/3 of entire median length, coronal suture about half length of median length, and disk depressed on each side of midline ( Fig. 8 ). Face with clypeus long, lateral margins convex; clypellus short, with base broad, inflated, abruptly narrowed distally ( Fig. 9 ). Crown, pronotum and mesonotum midline ratio about 1:1.2:1.7 ( Fig. 8 ). Forewing long, apex rounded, appendix narrowed ( Figs. 6, 7 ).

Male genitalia. Pygofer in lateral view with caudoventral lobe moderately long, caudodorsal margin with paired digitate processes ( Fig. 10 ). Segment X ventral processes concealed, in dorsal view narrowed distally ( Fig. 11 ). Subgenital plate long, apex with tuft of long setae ( Fig. 12 ). Dorsal connective in dorsal view Y-shaped, stem short, rami long, attaching distally to base of ventral processes of segment X ( Fig. 11 ). Aedeagus in dorsal view symmetrical, long, reaching subapex of paraphysis ( Figs. 13, 14 ); paraphysis in dorsal view asymmetrical, nearly triangular, apex with two spines with length ratio about 1:2.5, twisted dorsally, in lateral view straight ( Figs. 13, 14 ). Style long, curved, reaching middle of paraphysis, attenuated distally ( Figs. 13, 15 ).

Type material. Holotype: ♂, CHINA: Guangxi, Damingshan, 5–10 Aug. 2011, coll. Yang Zaihua ( GUGC).

Etymology. The new species name is derived from the Latin word “ biprocessa ” meaning “two spines”, referring to paraphysis with two processes apically.

Remarks. This species is most similar to T. circumcincta (Jacobi, 1944) and T. asperitas Nielson, 2013 in male genitalia features. It can be separated by the presence of irregular transparent ivory spots on the forewing ( Fig. 6 ), while T. circumcincta has small black spots distally ( Fig. 38 ) and T. asperitas has no spots ( Nielson 2013: 42, Plate 1B). Also in males of the new species the pygofer processes are bluntly broad ( Fig. 10 ), pointed apically in other species ( Fig. 42 ; Nielson 2013: 45, Fig. 8 ); the paraphysis apical spines length ratio is about 1:2.5 ( Figs. 13, 14 ), the other two species have this ratio more than 1:2.5 ( Figs. 45, 46, 48, 49 ; Nielson 2013: 45, Figs. 9, 10 ).

Figures

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.

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.