Igerna Kirkaldy, 1903

C. A. Viraktamath, 2011, Revision of the Oriental and Australian Agalliini (Hemiptera: Cicadellidae: Megophthalminae) 2844, Zootaxa 2844, pp. 1-118 : 62

Genus Igerna Kirkaldy

Igerna Kirkaldy 1903: 13 . Type-species: Pachynus bimaculicollis Stål , by original designation, replacement name for Pachynus Stål 1866 not Rafinesque 1815.

Color. Usually with black or brown markings on ochraceous background.

Morphology. Small to medium sized leafhoppers measuring 3.0–6.0 mm in length. Head shorter in middle than next to eyes, hind margin sinuately curved laterally behind eyes. Head including eyes broader than pronotum. Ocelli either slightly closer to each other than to eyes or equidistant or distinctly closer to eyes than to each other, situated in rather shallow depressions. Face forming even convex curve from vertex to tip of clypellus with surface slightly polished. Frontoclypeus dorsally slightly diverging, transclypal suture not complete in middle. Pronotum and scutellum either finely granulated or with punctures, often surface faintly wrinkled. Forewing venation without accessory cross veins, with three anteapical and four apical cells, inner anteapical cell open behind ( Fig. 15), no cross vein between claval veins. Forefemur as in Austroagallia ( Fig. 24). Hind tibial macrosetae PD 7±2 (5–12), AD 7±1, AV 5±1 (4–7). Hind basitarsus with one platella on distal transverse row ( Fig. 34).

Male genitalia. Pygofer lobe either with tooth-like process on caudo-dorsal margin or caudally produced into simple or bifurcate spine-like process or elongate dorsal lobe. Styles with inner arm either as long as or longer than outer arm. Connective caudally often bilobed, about as long as broad, either articulated with aedeagus or fused with it. Aedegus symmetrical, rarely asymmetrical, shaft ventrally produced at base, dorsal apodeme and socle well developed, process on shaft when present elongate. Anal collar simple or reduced.

Female genitalia. First pair of valvulae slightly arcuate, sculptured area occupying more than half length, sculpture alveolate, submarginal in mid region, each alveoli rather elongate, ventral and dorsal two to three rows parallel to long axis of valve, remaining obliquely arranged and closely packed ( Figs 68, 69). Second pair of valvulae arcuate, with toothed area occupying less than half length, with denticles ( Fig. 71–72).

Distribution. Afrotropical, Oriental and Pacific Islands.

Remarks. Igerna closely resembles the genera Austroagaiia Evans, Ianagallia gen. nov. and Japanagallia . It differs from Austroagallia by having symmetrical male genitalia, more convex and polished face, from Ianagallia in having less robust aedeagal shaft and from Japanagallia in having the claval veins separate, not connected by a cross vein.