Myittana (Benglebra) curvata, Luo & Yang & Chen, 2019

Luo, Qiang, Yang, Lin & Chen, Xiang-Sheng, 2019, Two new species of the bamboo-feeding subgenus Myittana (Benglebra) from China (Hemiptera: Cicadellidae: Deltocephalinae), Zootaxa 4646 (1), pp. 164-172 : 167

Myittana (Benglebra) curvata sp. nov.

Figs 13–24 , 26 , 32–36

Description. Body length: male 3.88–4.13 mm (6 specimens), female 4.22–4.48 mm (7 specimens); forewing length: male 3.04–3.22 mm (6 specimens), female 3.20–3.44 mm (7 specimens).

Coloration. General color pale yellow to yellow, eyes brown, face yellowish white ( Figs 13–17 ). Fourth apical cell with a small brownish black spot near base ( Figs 13–14 ).

Head and thorax. External features similar to M. (Benglebra) biflaka sp. nov., but body slightly smaller. Crown slightly shorter than width between eyes (0.78:1); coronal suture longer than half median length of crown (0.63:1) ( Figs 13, 16 ). Pronotum as wide as head including eyes, longer than median length of crown (1.57:1) ( Figs 13, 16 ). Forewing elongate, considerably longer than abdomen, about 2.5 times longer than widest part (2.28:1).

Male genitalia. Pygofer with long spinous process arising from middle of ventral margin directed posteriorly and curved mesally before apex ( Figs 21, 24 ). Valve broad anteriorly, posterior margin medially broadly produced posteriorly ( Fig. 19 ). Style slightly bifid ( Fig. 18 ). Aedeagus short, robust basally and laterally compressed, Cshaped in profile and curved ventrad, gonopore apical ( Figs 20, 22–23 ).

Female genitalia. Sternite VII with anterior margin nearly straight, posterior margin evenly concave ( Fig. 26 ). First and second valvulae as in M. (Benglebra) biflaka sp. nov. ( Figs 35–36 ).

Material examined. Holotype: ♂, China: Yunnan, Dehong Autonomous Prefecture , Longchuan County (24°12’N, 97°48’E), 19 August 2015, Xiang-Sheng Chen and Lin Yang; paratypes: 5♂, 7♀, same data as holotype.

Host Plant. Bamboo ( Thyrsostachys siamensis (Kurz ex Munro) Gamble ).

Distribution. China (Yunnan Province).

Remarks. The male genitalia of this species is similar to M. (Benglebra) alami , but differs as follows: (1) male pygofer with a long spine arising from middle of ventral margin and recurved subapically ( Figs 21, 24 ) (pygofer with inner stout spines, not recurved subapically in M. (Benglebra) alami ); (2) aedeagus with smooth dorsal margin in lateral view ( Figs 22–23 ) (aedeagus with serrated dorsal margin near apex in M. (Benglebra) alami ).

Etymology. The name is derived from the Latin word “curvata”, referring to the subapically curved pygofer ventral process.

Figures

FIGURES 13–24. M. (Benglebra) curvata sp. nov., male 13. Male habitus, dorsal view; 14. Male habitus, lateral view; 15. Head and thorax, lateral view; 16. Head and thorax, dorsal view; 17. Face; 18. Style, dorsal view; 19. Valve and subgenital plate, ventral view; 20. Shaft, caudal view; 21. Male pygofer, lateral view; 22. Connective and aedeagus, dorsal view; 23. Connective and aedeagus, lateral view; 24. Male pygofer, ventral view. Scale bars: 0.5 mm (13–17); 0.2 mm (18–24).

FIGURES 25–28. Female sternite VII, ventral view 25. M. (Benglebra) biflaka sp. nov.; 26. M. (Benglebra) curvata sp. nov.; 27. M. (Benglebra) introspina (Chen & Yang); 28. M. (Benglebra) ventrospina (Chen & Yang). comb. nov.. Scale bars: 0.2 mm (25–28).

FIGURES 29–36. First and second valvula. 29–32 M. (Benglebra) biflaka sp. nov.; 29. First valvula; 30. Detail of dorsal sculptured area of first valvula; 31. Second valvula; 32. Detail of dorsal sculptured area of second valvula; 33–36 M. (Benglebra) curvata sp. nov.; 33. First valvula; 34. Detail of dorsal sculptured area of first valvula; 35. Second valvula; 36. Detail of dorsal sculptured area of second valvular. Scale bars: 0.2 mm.