Kybos virgator (Ribaut, 1933)

Tishechkin, Dmitri Yu., 2024, Leafhoppers of the genus Kybos Fieber, 1866 (Hemiptera: Cicadellidae: Typhlocybinae: Empoascini) in Kyrgyzstan, Zootaxa 5496 (1), pp. 89-100 : 97

Kybos virgator (Ribaut, 1933)

Figs 12 , 37 , 48–49, 57, 63

Empoasca virgator Ribaut, 1933: 152

Empoasca virgator var. saageri Wagner, 1935: 28

Empoasca (Kybos) virgator Dlabola, 1951: 3

Description. Brownish green with lighter and darker spots in fore part of body. Forewings smoky hyaline in apical parts, veins of hindwings and dorsal side of abdomen dark, visible through folded forewings ( Fig. 12 ).

Dorsal apodemes almost undeveloped, look like narrow transverse sclerotized band at base of abdomen. Ventral apodemes about twice as long as wide at base, parallel-sided, touching with inner margins or even converging and somewhat overlapping ( Fig. 37 ). Aedeagus with well-developed lateral processes ( Figs 48–49 ); occasionally, one or both processes serrated or bear small appendages (visible in lateral view on Fig. 48 ). Style shape typical of genus. Pygofer appendages narrow ( Fig. 57 ). Anal collar appendages narrow, falcate ( Fig. 63 ).

Hosts. Mainly Salix spp. We once found a population on cultivated Populus nigra ; Dworakowska (1976) also reports K. virgator from Alnus glutinosa .

Distribution. Europe, European Russia, eastern Kazakhstan, Mongolia (Dworakowska, 1976; Mitjaev, 2002). In Kyrgyzstan, K. virgator was found only in four localities in the northern part ( Chelpakova, 1994), which probably indicates that it is an introduced species in this country.

Remarks. We did not collect this species in Kyrgyzstan. The above description is based on specimens from European Russia.

Figures

FIGURES 1–12. Kybos spp., dorsal habitus. 1–4—K. montanus (1–2—specimens from Inner Tien Shan, 3—specimen from West Tien Shan, 4—specimen from Alai Range); 5–8—K. oshanini (5—specimen from the type locality of K. mesasiatica in Uzbekistan, 6—specimen from Shekaftar, the northern edge of the Fergana Valley, 7—specimen from the Ili River basin, Kazakhstan, 8—specimen from the type locality of K. oshanini in Moscow Oblast); 9—K. niveicolor; 10—K. auricillatus; 11—K. populi; 12—K. virgator.

FIGURES 13–37. Kybos spp., abdominal apodemes. 13–16—K. montanus (13–14—dorsal apodemes, 15–16—ventral apodemes); 17–32—K. oshanini (17–24—dorsal apodemes, 25–32—ventral apodemes; 17–20, 25–28—specimens from Shekaftar, the northern edge of the Fergana Valley, 21–22, 29–30—specimens from the same locality in West Tien Shan, 23, 31—specimen from the Ili River basin, Kazakhstan, 24, 32—specimen from the type locality of K. oshanini in Moscow Oblast); 33—K. niveicolor, dorsal and ventral apodemes; 34–35—K. auricillatus (34—dorsal apodemes, 35—ventral apodemes); 36— K. populi, dorsal and ventral apodemes; 37—K. virgator, same.

FIGURES 38–63. Kybos spp., male genitalia. 38–39, 50, 52, 58—K. montanus; 40–41, 53, 59—K. oshanini; 42–43, 51, 54, 60—K. niveicolor; 44–45, 55, 61—K. auricillatus; 46–47, 56, 62—K. populi; 48–49, 57, 63—K. virgator. 38, 40, 42, 44, 46, 48—aedeagus, lateral view, 39, 41, 43, 45, 47, 49—same, dorsal view, 50–51—style, 52–57—pygofer appendage, 58–63—anal collar appendage.