Longicornus grossus, Gou & Xing, 2022

Gou, Guangli & Xing, Jichun, 2022, Key to species of the genus Longicornus Li & Song (Hemiptera: Cicadellidae: Deltocephalinae) with description of a new species, Zootaxa 5129 (2), pp. 250-256 : 251

Longicornus grossus sp. nov.

Figs 13–15 , 29–41

Description. Body short, robust and fuscous ( Fig. 13 ). Vertex with paired irregular dark brown bands. Face marked with irregular yellowish brown lateral stripe ( Fig. 15 ). Forewing dark brown, with scatered hyaline areas (Figs. 13,14). Legs brownish, with dark bands.

External features as in generic description.

Male genitalia. Subgenital plate with 6 setae along lateral margin ( Fig. 31 ). Aedeagal shaft short and robust in ventral view, aedeagus with pair of furcate processes with one branch approximately as long as shaft and extended distad, other branch shorter than half length of shaft and extended posterad ( Figs. 32, 33 ).

Female seventh sternite approximately as long as broad at base, caudal margin medially produced ( Fig. 37 ). Female pygofer with ventroposterior margin slightly incurved. ( Fig. 36 ). First valvulae with obscure reticulate sculpture dorsally and scale-like sculpture ventrally ( Figs. 38, 39 ). Second valvulae with some distal teeth occupying about half of the total length ( Figs. 40, 41 ).

Measurement. Length (including tegmen): ♂ 5.6 mm, ♀ 5.7–5.9 mm.

Material examined. Holotype: ♂, China: Yunnan Prov., Puer City, Simao , 24 August 2014, coll. Haiyan Sun ( GUGC) ; Paratypes: 2♀♀, same data as holotype ( GUGC) .

Remarks. The new species can be distinguished from other species by the very short and stout aedeagus with pair of furcate processes arising apically.

Etymology. The species name is derived from the Latin word grossus , indicating the short and robust aedeagal shaft in ventral view.

Figures

FIGURES 10–18. Longicornus brevispinus Fang & Xing, 2019: 10. ♂, dorsal view; 11. ♂, lateral view; 12. ♂,face; Longicornus grossus sp. nov.: 13. ♂, dorsal view; 14. ♂, lateral view; 15. ♂,face; Longicornus longus Xing & Li: 16. ♂, dorsal view; 17. ♂, lateral view; 18. ♂,face.

FIGURES 29–35. Longicornus grossus sp. nov. 29. Male pygofer side, lateral view; 30. Valve, ventral view; 31. Subgenital plate, ventral view; 32. Aedeagus, lateral view; 33. Aedeagus, ventral view; 34. Connective, dorsal view; 35. Style, dorsal view.

FIGURES 36–41. Longicornus grossus sp. nov. 36. Genital capsule, lateral view; 37. Female seventh sternite, ventral view; 38. First valvula, lateral view; 39. Detail of sculptures of first valvula; 40. Second valvula, lateral view; 41. Detail of sculptures of second valaula.