Thagria crena Wang & Zhang

Wang, Xiu-Dan & Zhang, Ya-Lin, 2017, Five new species of the leafhopper genus Thagria Melichar (Hemiptera: Cicadellidae: Coelidiinae) from China, Zootaxa 4250 (3), pp. 219-228 : 224

Thagria crena Wang & Zhang , sp. nov.

( Figs. 40–48 )

Description. Measurements. Male, body length: 9.40 mm; head width: 2.27 mm; crown length×width: 0.85× 1.22 mm; eye width: 0.64 mm; clypeus length: 1.51 mm; pronotum length×width: 0.96× 2.78 mm; mesonotum length: 1.31mm. female unknown.

External morphology. Color similar to T. incurvata , but apical half of forewing with 8–9 ivory patches ( Figs. 40–43 ).

Head broad but narrower than pronotum, anterior margin rounded; crown short, extended slightly beyond eyes, disk foveate; coronal suture extend to anterior margin of head ( Fig. 41 ). Face with clypeus broad, lateral margins slightly convergent to base; clypellus short, with base inflated ( Fig. 42 ). Crown, pronotum and mesonotum midline ratio about 1:1:1.5. Venation typical for genus.

Male genitalia. Pygofer in lateral view broad with narrow caudoventral lobe, caudodorsal margin with a pair of processes, with truncated apex ( Fig. 44 ). Segment X in lateral view with ventral processes long, broad basally and tapered to apical 1/3 ( Fig. 44 ), curved outward in dorsal aspect; dorsal connective arched, without process basally ( Fig. 45 ). Aedeagus exceeds half of paraphysis; ventral paraphysis triangulate, very broad basally, distally slightly produced and notched apically, with robust digitate basal process ventrally on one side ( Figs. 47 ). Style very short. Connective longitudinally rectangular ( Fig. 46 ). Subgenital plate slender, rounded apically, with numerous fine long setae apically ( Fig. 48 ).

Material examined. Holotype: male, CHINA: Huaping Nature Reserve , Guangxi Province, 16 JUL 2015, coll. Ling Feng . Paratypes: 2 males, same data as holotype. ( NWAFU)

Etymology. This specific epithet is derived from the Latin word “ crena ”, referring to the notched apex of the ventral paraphysis.

Remarks. This species belongs to species group with broad clypellus and colorful appearance. It is similar to the last species, but has the ventral paraphysis notched apically and with a distinctive basal process.

Figures

FIGURES 40 – 48. Thagria cerna Wang & Zhang, sp. nov. Holotype: 40. habitus, dorsal view; 41. head and thorax, dorsal view; 42. face; 43. habitus, lateral view; 44. pygofer, lateral view; 45. dorsal connective, pygofer and segment X processes, ventral view; 46. style and connective, ventral view; 47. aedeagus and paraphysis, dorsal view; 48. subgential plate, lateral view. Scale bars: 40 – 43 = 1.0 mm; 44 – 48 = 0.5 mm.