Okubasca convoluta Yu & Yang, 2019

Yu, Xiaofei & Yang, Maofa, 2019, Okubasca Dworakowska (Hemiptera: Cicadellidae: Typhlocybinae: Empoascini) elevated to separate genus status with description of two new species from China, Zootaxa 4609 (2), pp. 395-400 : 396-398

Okubasca convoluta Yu & Yang , sp. nov.

( Figs 1–17 )

Type materials. Holotype . Male, Tongbiguan , Yunnan Province, 3. June. 2003, coll. Zaihua Yang. Paratype. 1 male, Longling , Yunnan Province, 10. June. 2011, coll. Yujian Li. Description. Length. Male 4.1–4.3mm .

Body yellowish in dorsal view ( Fig 1 ). Median length of vertex approximately 1/2 width between eyes. Crown about as wide as pronotum. Coronal suture brownish, almost reaching apex of vertex, eyes brownish ( Figs 1, 4 ). Face black except apical part of anteclypeus ( Figs 2, 3, 5, 6 ). Pronotum with large greenish posteromedial triangle bordered anteriorly by pale yellow spot ( Figs 1, 4 ). Scutellum with yellowish longitudinal stripe, scutoscutellar sulcus short ( Figs 1, 4 ).

Basal sternal abdominal apodemes reaching segment IV ( Fig 9 ). Male pygofer triangular, ventral margin inflexed with 7 rigid microsetae, posterior margin short, bearing few rigid microsetae, ventral pygofer appendage short, tapered ( Figs 10, 12 ), dorsal bridge more than 1/3 length of pygofer side ( Fig 12 ). Subgenital plate longer than pygofer side, with 45 group B setae along entire outer margin, 10 group C setae and few group D setae ( Fig 11 ). Paramere tapering apically, with 6 setae subapically followed by 6 teeth ( Fig 13 ). Aedeagus almost inverse Sshaped and of uniform thickness in lateral view, preatrium almost as long as shaft, shaft evenly curved dorsad and tapered to sharp point apically, apex slightly emarginate in posterior view ( Figs 14, 15 ). Anal tube process straight, with apex pointed ( Fig 16 ). Connective longer than wide, broad at base ( Fig 17 ).

Remarks. The new species is very similar to O. okubella (Matsumura) in aedeagal shape ( Figs 14, 15 ), but can be distinguished from the latter by the triangular pygofer side ( Fig 10 ), the uniform width of the aedeagal shaft in lateral view, the straight anal tube process ( Figs 10, 16 ) and black face ( Figs 2, 5 ).

Etymology. The new species name is formed from the Latin “ convolutus ”, which refers to the inflexed ventral margin of the pygofer ( Figs 10, 12 ).

Distribution. China (Yunnan)

Figures

FIGURES 1–17. Okubasca convoluta Yu & Yang, sp. nov., 1. Whole body, dorsal view; 2. Whole body, ventral view; 3. Whole body, lateral view; 4. Head and thorax, dorsal view; 5. Face; 6. Head and thorax, lateral view; 7. Forewing; 8. Hindwing; 9. Abdominal apodemes, ventral view; 10. Male terminalia, lateral view; 11. Subgenital plate, ventral view; 12. Pygofer side, dorsal view; 13. Paramere, lateral view; 14. Aedeagus, dorsal view; 15. Aedeagus, lateral view; 16. Anal tube process, lateral view; 17. Connective. Scale bars: 1–8 (0.5 mm); 9–17 (0.1 mm).