Iposcopus Baker, 1915

Xue, Qingquan, Mckamey, Stuart H. & Zhang, Yalin, 2017, Redescription of the Philippine leafhopper genus Iposcopus Baker (Hemiptera: Cicadellidae: Idiocerinae), Zootaxa 4277 (1), pp. 122-128 : 122-127

Iposcopus Baker

Iposcopus Baker, 1915: 320 . Type species: Iposcopus distanti Baker , by original designation.

Body brown. Forewing transparent with hyaline spots subapically and near base of costal margin, with brown markings, apex brown ( Figs. 1 D, 2D).

Body robust. Head slightly wider than pronotum. Crown short. Head and pronotum shagreen. Face slightly wider than long; lateral frontal sutures straight, reaching ocelli; ocelli closer to eyes than to each other; frontoclypeus broad; anteclypeus base wider than apex, surpassing apex of gena; male anteclypeus broad; female anteclypeus less swollen, lateral margin slightly concave; lora narrow; rostrum short, not reaching hind coxae, tapered apically, lateral margin of gena convex ( Figs. 1 B, 2B). Pronotum with short lateral margins, elevated and convex. Combined length of mesoscutum and scutellum longer than pronotum and crown combined. Forewing with 4 apical and 2 subapical cells; appendix broad, extending to middle of third apical cell; clavus with 2 veins ( Fig. 5 A). Hind wing with venation complete ( Fig. 5 B). Fore femur with AD and PD setae very short and irregularly arranged except apical macrosetae; AV and PV with several fine setae, irregularly arranged. Fore tibia rounded on dorsal surface, with stout AV and PV setae on apical half, and fine setae on basal half. Hind femur with setal formula 2+1. Hind tibia moderately flattened on dorsal surface, with 12–14 PD setae, 7–8 AD setae situated on strong bases, 8 AV setae. Metathoracic first tarsomere with 2 platellar setae apically.

Male genitalia. Pygofer broadened, apex with inner process on ventral margin ( Figs. 3 A, 4A). Segment X wide, anal collar developed ( Figs. 3 A, 4A). Subgenital plate shorter than pygofer, with several fine setae on dorsal margin. Style broad. Connective T-shaped, with medial longitudinal keel ( Figs. 3 C, 4D). Aedeagus J-shaped, shaft elongate and slender, with pair of slender processes on lateral margin subapically; dorsal apodeme developed; gonopore near apex on ventral surface ( Figs. 3 E–F, 4E–F).

Female genitalia. Seventh sternite wider than long, caudal margin with pair of triangular projections, emarginate between them ( Figs. 1 I, 2I). First valvulae curved dorsally, apex attenuate ( Figs. 1 J, 1L, 2J, 2L), Second valvulae slender, distinctly curved dorsally, dorsal margin convex distally ( Figs. 1 K, 1M, 2K, 2M).

Distribution. Philippines.

Diagnosis. Iposcopus differs from other Idiocerinae by the broad frontoclypeus; the anteclypeus base wider than the apex; the narrow lora; and the male pygofer ventral margin with an inner process on anterior margin.

Remarks. Iposcopus is similar to Kuchingella Wei & Webb (in Wei et al., 2010) in having the forewing appendix bordering 3 apical cells, a similarly shaped of hind wing and female second valvulae, but differs from the latter in having the forewing with 2 subapical cells, frontoclypeus broad and narrow lora, rostrum not reaching hind coxae and apex tapered. This genus superficially resembles Philipposcopus Maldonado-Capriles (1972) in having the frontoclypeus and base of anteclypeus broad, lora narrow, and forewing with 2 subapical cells, but differs from Philipposcopus in having the male anteclypeus not constricted, rostrum short, forewing with veins indistinct on basal half, pygofer anal collar developed, and the aedeagus preatrium undeveloped.

Figures

FIGURE 1. Iposcopus breviceps A, head and thorax of male, dorsal view; B, face of male; C, habitus of male, dorsal view; D, habitus of male, lateral view; E, habitus of female, dorsal view; F, habitus of female, lateral view; G, head and thorax of female, dorsal view; H, face of female; I, female genitalia, ventral view; J, first valvulae; K, second valvulae; L, apex of first valvulae; M, apex of second valvulae.

FIGURE 3. Iposcopus breviceps A, male pygofer, anal tube and subgenital plate, lateral view; B, connective, ventral view; C, connective, lateral view; D, valve; E, aedeagus, ventral view; F, aedeagus, lateral view; G, left style, lateral view.

FIGURE 5. Iposcopus distanti A, male forewing; B, male hind wing.