Cheiloceps Uhler, 1895

Gnezdilov, Dimir M., 2018, To the revision of the genus Thionia Stål (Hemiptera, Fulgoroidea, Issidae), with description of new genera and new subtribe, Zootaxa 4434 (1), pp. 158-170 : 160-161

Genus Cheiloceps Uhler, 1895

Cheiloceps Uhler, 1895: 68 . Type species: Cheiloceps musca Uhler, 1895 .

Thionia (Cheiloceps) : Fennah 1955: 34 (as subgenus).

Cheiloceps: Gnezdilov 2013: 726 (as genus).

Diagnosis. Metope elongate, with distinct (sometimes not for the whole length) median carina and sublateral carinae (sometimes weak) ( Fennah 1965, fig. 29) ( Fig. 6 ). Median and sublateral carinae joined below upper margin of metope. Coryphe nearly square, often with incomplete median carina ( Fennah 1965, fig. 30) ( Fig. 4 ). Second and third segments of rostrum are almost equal in length; third segment narrowing apically ( Fig. 17 ). Fore wings elongate, surpassing abdomen, without hypocostal plate. Forewing vein sequence: R 2–3, with first furcation near to basal cell; M 2, furcating before wing middle; CuΑ 1. Clavus long, open—Pcu+Α1 runs into apex of clavus ( Fennah 1965, fig. 32). Hind wings well developped, 3-lobed, with distinct coupling lobe on its anterior margin ( Figs 9, 10 ). Hindwing vein sequence: R 2, furcating after wing middle; M 1; CuΑ 2, furacting apically; CuP 1; Pcu 2, furcating apically and partly fused with Α1.1 at mid length; Α1 2; Α2 2–3, firstly furcating at mid length ( Figs 4, 5 ). Hind tibia with 2 lateral spines in distal half. First metatarsomere with a whole row of spines arranged in arc.

Phallobase poorly sclerotized dorso-apically. Αedeagus with often poorly sclerotized ventral hooks, curved and directed ventrocephalad ( Fennah 1965, fig. 33). Gonoplacs elongate and tapering distad ( Figs 4, 7 ). Female anal tube long and narrow.

Figures

FIGURES 4–8. Cheiloceps musca Uhler, cotype. 4—dorsal view; 5—lateral view; 6—frontal view; 7—ovipositor, lateral view; 8—labels.

FIGURES 17–18. Thioniina, rostrum in lateral view. 17—Cheiloceps musca Uhler; 18—Fowlerium naso (Fowler).

FIGURES 9–11. Thioniina, hind wing. 9—Cheiloceps musca Uhler; 10—Cheiloceps argo (Fennah); 11—Aplos simplex (Germar). Abbreviations: rl—remigial lobe; rvl—remigio-vannal lobe; al—anal lobe.