Euroxenus, Gnezdilov, 2009

Gnezdilov, Vladimir M., 2009, Revisionary notes on some tropical Issidae and Nogodinidae (Hemiptera: Fulgoroidea), Acta Entomologica Musei Nationalis Pragae 49 (1), pp. 75-92 : 83

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gen. nov.

Genus Euroxenus   gen. nov.

Type species. Borbonissus vayssieresi Bonfils, Attié & Reynaud, 2001   , here designated.

Description. Metope relatively wide, enlarged towards clypeus, with distinct median and sublateral keels joining at its upper margin. Coryphe nearly quadrate, anterior margin obtusely angulate. Pronotum with median keel. Scutellum with median and lateral keels. Fore wings relatively short, with long clavus nearly reaching wing apex, without hypocostal plate. Radius, median and cubitus anterior bifurcate (vein formula R 2, M 2 and CuA 2), with many transverse veins. Hind wings with well-developed vannus and anal lobe. Radius (R 1 very short) and postcubitus bifurcate, median, cubitus posterior and anal veins simple, cubitus anterior trifurcate (CuA 1 and CuA 2 short); vein formula R 2, M 1, CuA 3, CuP 1, Pcu 2, A 1 1 and A 2 1. Radius, median, and cubitus anterior connected by transverse veins. Cubitus anterior (CuA 3) and cubitus posterior fused, not thickened. Hind tibia with two lateral spines. First metatarsomere with apically arched row of 9–13 intermediate spines.

Each dorso-lateral lobe of phallobase with bifurcate subapical process with long lower branch directed basally and shorter upper branch directed apically. Aedeagus with pair of ventral hooks. Style with weakly concave posterior margin. Capitulum of style, in dorsal view, elongate, not narrowing apically, with wide lateral tooth.

Female sternum VII with posterior margin convex medially.

Differential diagnosis. Euroxenus   gen. nov. is closely related to Eusarima Yang, 1994   in CHAN & YANG (1994) based on the completely developed median and sublateral keels of metope and the presence of an elongate apical process on each dorso-lateral lobe of phallobase. Euroxenus   differs from Eusarima   in the shorter fore wings with bifurcate median vein (tri- or tetrafurcate in Eusarima   ) and in the bifurcate apical processes of the phallobase (simple in Eusarima   ) ( CHAN & YANG 1994: Figs. 45–72).

Etymology. Derived from the combination of Greek ‘ευρος’, eastern wind, and ‘ζένος’, guest; ‘ Euroxenus   ’ = eastern guest. Gender masculine.