Imbecilla Dworakowska, 1970

Cao, Yanghui, Dietrich, Christopher H., Dmitriev, Dmitry A. & Zhang, Yalin, 2020, Taxonomic study of some Afrotropical erythroneurine leafhoppers (Hemiptera: Cicadellidae: Typhlocybinae), Zootaxa 4860 (3), pp. 301-351 : 319

Imbecilla Dworakowska, 1970

Imbecilla Dworakowska, 1970a: 703

Type species: Erythroneura lubiae China, 1931 , by original designation

Description. Body robust and short, mostly 2.0 to 3.0 mm. Crown fore margin broadly rounded apically, coronal suture visible at least basally. Head including eyes as wide as or wider than pronotum. Ocelli rudimentary with elongated, crescent-shaped vestiges. Face convex in profile. Pronotum with lateral margins parallel or divergent posteriorly in dorsal view, hind margin concave. Forewing ( Figs 10a , 11a ) with four apical cells almost equal in length and width, third apical cell narrow basally and wide apically, AA and AP fused. Hind wing ( Figs 10b , 11a ) with or without RA.

Male abdominal apodemes 2S narrow, extended to sternite IV–VI. Anal tube sclerotized distally, without appendages.

Male genital capsule short, length subequal to width, sclerotized. Pygofer lobe usually membranous at lower ventral margin, with spicules on distal part, with some fine setae near ventral margin; dorsal appendage articulated to lobe, lamellate, sometimes with additional process; ventral appendage absent. Subgenital plate surpassing hind margin of pygofer lobe, broadened subbasally, evenly tapered from subbase to apex, outer margin with inner plica, usually forming pigmented protrusion medially, with group or row of peg-like microsetae on subbasal angle and continued with rigid microsetae, with some microsetae scattered on distal disc and about 2–3 macrosetae subbasally near outer margin. Style with second extension apically, usually elongated; preapical lobe distinct, usually with sensory setae. Connective lamellate, manubrium usually narrow, central lobe well developed. Aedeagal shaft tubular; dorsal apodeme long, widened in caudal view; preatrium short, usually with pair of long preatrial processes; gonopore apical or subapical.

Distribution. Central African Republic; Republic of Congo; Ethiopia; Guinea; Israel; Ivory Coast; Lebanon; Nigeria; Sudan; Uganda.

Diagnosis. This genus is similar to Empoascanara Distant, 1918 , but the head is usually wider, the fourth apical cell of the forewing is as long as the third one, the subgenital plate is evenly tapered from subbase to apex and the style has second extension.

Figures

FIGURE 10. Imbecilla bifurca. a. forewing; b. hind wing; c. genital capsule; d. pygofer dorsal appendage; e. subgenital plate, style, connective and sternite IX; f. subgenital plate, dorsal view; g. style, dorsal view; h. connective; i. aedeagus, lateral view; j. aedeagus, ventral view.

FIGURE 11. Imbecilla spinalis. a. forewing; b. hind wing; c. abdominal apodemes 2S; d. genital capsule; e. pygofer dorsal appendage; f. subgenital plate, style, connective and sternite IX; g. subgenital plate, dorsal view; h. style, dorsal view; i. connective; j. aedeagus, lateral view; k. aedeagus, ventral view.