Tichocoelidia Kramer, 1962

Gonçalves, Clayton Corrêa & Barbosa, Julianna Freires, 2021, Two new Peruvian species of Tichocoelidia Kramer (Hemiptera: Cicadellidae: Neocoelidiinae) with a key to males, Zootaxa 5039 (3), pp. 417-424 : 418

Tichocoelidia Kramer, 1962

Tichocoelidia Kramer 1962: 104–105 (description); 1964: 261, 270 (key to genera, redescription); Oman et al. 1990: 257, 363 (catalogue); Chiamolera & Cavichioli 2003: 615–617 (review); Freytag & Sharkey 2002: 255 (citation, number of species); Dietrich 2003: 701 (distribution); Marques-Costa & Cavichioli 2012: 5, 14, 17, 27 (distribution, phylogeny of Neocoelidiinae ).

Type-species Tichocoelidia clarkei Kramer, 1962 , by original designation.

Diagnosis. Pale yellow leafhoppers ( Figs 21–28 ), with or without orange stripes on crown; frons ( Figs 1 , 11 ) with small round black spot at the apex of head; transition crown-face ( Figs 22, 24, 26, 28 ) with carina; ocelli ( Figs 1 , 11 ) at the transition between the crown and frons; clypeus ( Figs 1 , 11 ) with parallel lateral margins or slightly converging apically; pronotum ( Figs 21, 23, 25, 27 ) with posterior margin usually with “V” shaped emargination; forewing ( Figs 2 , 12 ) with venation indistinct to weakly visible, except apically, with four apical cells and three anteapical cells; hind wing with veins R 4+5 and M 1+2 converging preapically, fused at the apex; male pygofer ( Figs 3 , 13 ) with macrosetae on apical third, dorsal margin with pair of long inner processes, ventral margin with well-developed tooth; subgenital plates ( Figs 5 , 15 ) shorter than the pygofer, fused together in basal portion; connective ( Figs 6 , 16 ) V-shaped; aedeagus ( Figs 8–9 , 18–19 ) long and narrow, dorsal apodeme membranous; anal tube ( Figs 10 , 20 ) with pair of processes.

Description. Leafhoppers ( Figs 21–28 ) yellow to pale yellow, green in life; crown with or without orange stripes; frons ( Figs 1 , 11 ) with small round black spot on the apex of the head. Head, in dorsal view, ( Figs 21, 23, 25, 27 ), narrower than pronotum; crown subquadrangular or subpentagonal, moderately produced anteriorly, approximately as long as wide; anterior margin arched or angled; surface smooth, flat or slightly concave; coronal macules indistinct or weakly distinct; coronal suture indistinct. Head, in lateral view ( Figs 22, 24, 26, 28 ), crownface transition with thin carina; lateral margins, adjacent to eyes, elevated and slightly carinate; ocelli small, on the anterior margin of head, at crown-face transition, closer to eyes than to midline; antennal ledges vertical and carinate; antennal flagellum as long as body, exceeding the basal half of forewing; frons convex. Head, in frontal view ( Figs 1 , 11 ), with frons about twice as long as wide; frontogenal sutures reaching ocelli; apex of maxillary plates approximately same height as apex of clypeus or slightly above it; lorum approximately half-moon shaped, inferior margin not reaching apical margin of clypeus; epistomal suture complete; clypeus with parallel lateral margins or slightly converging apically.

Pronotum ( Figs 21, 23, 25, 27 ) with V-emarginated posterior margin; surface with transverse striae; dorsopleural carina complete, long and evident. Forewing ( Figs 2 , 12 ) semi-hyaline; venation mostly indistinct, except for veins delimiting apical cells; three anteapical cells visible only apically; four apical cells, all approximately rectangular, third apical cell distal to the base of the wing compared to the second and fourth apical cells; alar appendix narrow, extending only along first apical cell. Hind wing with three apical cells, R 4 +5 and M 1+2 convergent preapically, fused at apex, forming single vein. Profemur with AD, AM and PD rows reduced and poorly defined, except for apical setae AD 1, AM 1 and PD 1 ; AV row formed by two preapical setae; IC row formed by slightly arched comb of 8–9 fine setae, beginning at distal half of femur and extending to near apex. Metafemur with setal formula 2:2:0. Metatibia with AD row with two or three intercalary microsetae between macrosetae. Metatarsomere I with two parallel rows of small setae on plantar surface; apex with seven platellae. Metatarsomere II apex with three platellae .

Male terminalia. Pygofer ( Figs 3 , 13 ) slightly narrowing towards at apex; macrosetae present; dorsal margin with pair of long inner processes, near base of anal tube and extending posteriorly; ventral margin with basal or median large tooth curved ventrally; apex rounded. Subgenital plates ( Figs 4–5 , 14–15 ) shorter than pygofer; completely fused to the valve and fused to each other basally, free only in apical portion; macrosetae absent; apices rounded. Connective ( Figs 6 , 16 ) V-shaped. Style ( Figs 6–7 , 16–17 ) moderately long; preapical lobe reduced; dorsal margin smooth; apex slightly curved ventrally, with setae on apical third. Aedeagus ( Figs 8–9 , 18–19 ) long and narrow; dorsal apodeme membranous. Anal tube ( Figs 10 , 20 ) with pair of processes.

Female terminalia. Female unknown.

Figures

FIGURES 21–28. Habitus, dorsal and lateral views, respectively. 21 and 22, Tichocoelidia marceloi sp. nov., holotype male. 23 and 24, T. vanessae sp. nov., holotype male. 25 and 26, T. clarkei Kramer, 1962, holotype male (USNM). 27 and 28, T. grandis Chiamolera & Cavichioli, 2003, holotype male (INPA).

FIGURES 1–10. Tichocoelidia marceloi sp. nov., holotype male: 1, head, frontal view; 2, forewing; 3, pygofer and anal tube, lateral view; 4, valve and subgenital plates, lateral view; 5, valve and subgenital plates, ventral view; 6, connective and styles, dorsal view; 7, style, lateral view; 8, aedeagus, lateral view; 9, aedeagus, caudal view; 10 processes of anal tube, caudal view.

FIGURES 11–20. Tichocoelidia vanessae sp. nov., holotype male: 11, head, frontal view; 12, forewing; 13, pygofer and anal tube, lateral view; 14, valve and subgenital plates, lateral view; 15, valve and subgenital plates, ventral view; 16, connective and style, dorsal view; 17, style, lateral view; 18, aedeagus, lateral view; 19, aedeagus, caudal view; 20 processes of anal tube, caudal view.