Drabescina Ishihara, 1953

Zahniser, James N. & Dietrich, Chris H., 2013, A review of the tribes of Deltocephalinae (Hemiptera: Auchenorrhyncha: Cicadellidae), European Journal of Taxonomy 45, pp. 1-211 : 69-70

Drabescina Ishihara, 1953

Fig. 19

Type genus: Drabescus Stål, 1870 .

Diagnosis

Drabescina are large, robust, black, grey, or fuscous leafhoppers. They can be distinguished from Paraboloponina by the very strong antennal ledges, antennae usually somewhat shorter- 1.0 to 1.5 x width of head, rugose or striate texture of the frontoclypeus, protibia flattened and expanded dorsally and with dorsal margins sharply carinate, and forewing appendix large and extending to the wing apex.

Description

HEAD. Head subequal to or wider than pronotum. Discal portion of crown glabrous with radial or longitudinal striae. Anterior margin of head glabrous, irregularly textured, or with numerous transverse striations or carinae. Frontoclypeus not tumid; texture glabrous or striate. Clypellus widening apically; apex following or slightly surpassing normal curve of gena. Lorum subequal to or wider than clypellus near base. Antennal bases near upper or anterodorsal corners of eyes. Antennae long, as long as width of head or longer. Gena obtusely incised laterally; with fine erect seta beside laterofrontal suture. Antennal ledges strongly developed (with a definite ledge). Ocelli present; distant from eyes; on anterior margin of head.

THORAX. Pronotum lateral margin carinate; lateral margin shorter than basal width of eye.

WINGS. Forewing macropterous; appendix large, extending to wing apex; with 3 anteapical cells; veins not raised; without reflexed costal veins; A1-A2 crossvein absent or present; apical venation not highly reticulate.

LEGS. Profemur with AM1 seta only; intercalary row setae not in one row or scattered; row AV with thin, hair-like setae or without setae. Protibia dorsal surface flat; sharply carinate along AD and PD margins. Metafemur apex macrosetae 2+1. Metatarsomere I not expanded apically; plantar setae simple, tapered.

MALE GENITALIA. Valve articulated with pygofer; with short point of articulation with pygofer. Pygofer basolateral membranous cleft present; macrosetae absent or reduced (≤ two rows) or well differentiated into several rows. Subgenital plates free from each other; articulated with valve; without macrosetae. Style broadly bilobed basally, median anterior lobe pronounced; apophysis digitate, lobate, or incrassate with distinct strigate to reticulate texturing. Aedeagus usually with pair of fused basal processes; without basal hinge; with a single shaft and gonopore. Connective anterior arms somewhat divergent, Y -shaped; articulated with aedeagus.

FEMALE GENITALIA. Pygofer with numerous macrosetae. Ovipositor not protruding far beyond pygofer apex. First valvula convex; dorsal sculpturing pattern strigate; sculpturing reaching dorsal margin; without distinctly delimited ventroapical sculpturing. Second valvula abruptly broadened medially or subapically or broad, gradually tapered; with dorsal median tooth; teeth on apical 1/3 or more or teeth restricted to apical 1/4 or less; teeth large, regularly shaped or teeth small, regularly or irregularly shaped.

Geography and ecology

Distribution: Palearctic, Afrotropical and Oriental regions. Species of Drabescus have been collected at lights and sweeping woody forest vegetation.

Remarks

Drabescina contains 2 genera and 55 species.

Included genera

Drabescus Stål, 1870

Rengatella Zhang & Webb, 1996

Figures

Fig. 19. Drabescini (Drabescina). Drabescus zhangi sp. nov. A–I. Standard views (see Material & Methods). J. Ventral view of ♂ pygofer.