Cornicola Ohara & Hayashi, 2022

Xu, Ye, Dietrich, Christopher H. & Qin, Dao-Zheng, 2023, A key to genera of Dikraneurini from China, with description of a new species of Cornicola Ohara & Hayashi (Hemiptera, Cicadellidae, Typhlocybinae), ZooKeys 1145, pp. 191-200 : 191

Genus Cornicola Ohara & Hayashi, 2022

Type species.

Cornicola mizuki Ohara & Hayashi, 2022, by original designation.

Diagnosis.

Cornicola is easily distinguishable from all other known Typhlocybinae in having the following combination of characters: (1) crown of head much narrower than pronotum and strongly elevated above anterior margin of pronotum (Figs 3 , 6 ); (2) forewing with vein R2 and RM arising from r cell and MCu from m cell (Fig. 9 ); (3) hind wing with submarginal vein obsolete along costal margin and anal vein branched (Fig. 10 ); (4) male pygofer with dorsal margin almost straight, with short preapical fingerlike process, folded mesad subapically, ventral appendage absent (Figs 16 , 17 ); and (5) subgenital plates fused in proximal 1/3, with lateral macrosetal row (Fig. 19 ).

Notes.

Ohara and Hayashi (2022) recognized that Cornicola is related to Igutettix Matsumura, 1932 and therefore placed the genus in Dikraneurini ; and also compared the genus to Vilbasteana Anufriev, 1970, Koreoneura Hossain & Kwon, 2021 and Sweta Viraktamath & Dietrich, 2011. However, the hind wing venation of Cornicola differs from the above-mentioned genera and instead resembles that of the Southeast Asian dikraneurine genera Rakta Dietrich, 2013 and Albodikra Dietrich, 2013 in having the submarginal vein obsolete or reduced apically along the costal margin of the hind wing (Fig. 10 ; fig. 2b, d in Dietrich 2013) and thus resembling that of Empoascini . Cornicola differs from these two genera in having an anteclypeus only slightly convex in both sexes (Figs 5 , 8 ) (strongly swollen and broad in males of Rakta and Albodikra ). Despite a strong resemblance of the hind wing venation of the new genus to the common pattern in Empoascini and some additional similarities in the male genitalia (e.g., elongate style), Cornicola is clearly more closely related to Dikraneurini and may represent a transitional form between Dikraneurini and Empoascini .

Distribution.

Japan (Hokkaido, Honshu, Shikoku) and China (Chongqing).

Figures

Figures 1 - 15. Cornicola maculatus Xu, Dietrich & Qin sp. nov. 1, 2 Adults showing different body coloration 3 female adult, dorsal view 4 female adult, left lateral view 5, 8 face 6 male adult (abdomen removed), dorsal view 7 male adult (abdomen removed), left lateral view 9 forewing 10 hind wing 11 left femur and base of tibia, anterior view 12 left middle femur, anterior view 13 left hind femur apex and base of tibia, anterior view 14 distal part of hind tibia and tarsus, anterior view 15 sternal apodemes.

Figures 16 - 24. Cornicola maculatus Xu, Dietrich & Qin sp. nov. 16 male genital capsule, left lateral view 17 male pygofer, dorsal view 18 anal tube, left lateral view 19 subgenital plates 20 connective, lateral view 21 connective, dorsal view 22 style 23 aedeagus, left lateral view 24 aedeagus, ventral view.