Ennya Stål, 1866

Montalvo-Salazar, Jorge L. & López-García, Margarita M., 2024, Contributions on the treehopper genus Ennya Stål, 1866 (Hemiptera: Membracidae) with two new species from Ecuador, Zootaxa 5428 (2), pp. 269-289 : 271

Ennya Stål, 1866

Diagnosis. Head triangular. Pronotum navicular with longitudinal non-reticulate carinae ( Fig. 1A–B ). Humeral angles triangularly produced ( Fig. 1C ). Dorsal outline rounded or with a dorsal process elevated above or just behind humeral angles and projected upwards or obliquely forward and upwards. Dorsal process (when present) blunt ( Fig. 7B ), triangular ( Fig. 2B ), spine-like (1B) or trapezoidal ( Fig. 1A ). Forewings in repose partially concealed by pronotum up to Cu vein; veins R, M, and Cu separated up to the middle, five apical cells and usually one discoidal cell smaller than first apical cell ( Fig 1B ). Hind wing with three apical cells.

Remarks. The coloration of Ennya species is usually yellowish green, but also varies from brown, orange, yellow, white or black; with black patches or bands, the central carina contrasting black ( Figs. 1C–D ) or concolorous with the pronotum. Some species present remarkable sexual dimorphism in coloration and shape of dorsal process with females frequently lighter and with a higher dorsal process than males. The shape of the dorsal process is likely the most important character to distinguish species, although the elevation may vary within the same species. Species with a trapezoidal dorsal process present an anterior and posterior vertex ( Fig. 1A ), and the shape can vary independently of each vertex from rounded to triangular. The orientation (forwards, upwards or backwards) of the dorsal process apex (or anterior vertex in trapezoidal process) may be used to delimit species. Currently, E. colombiana Sakakibara, 1996a is the only known species that lacks a dorsal process. The pronotum reaches nearly to, or slightly beyond, the forewings tips except for E. allkukiru sp. nov., in which the pronotum barely reaches the apex of the third apical cell ( Fig. 2B ). The metopidium, in frontal view, is usually rounded except for E. lamariela sp. nov. which is sub-quadrate ( Fig. 7A ).

Species included (19):

E. andina Sakakibara, 1996

E. allkukiru Montalvo-Salazar sp. nov.

E. bordoni Sakakibara, 1996

E. chlorizans Breddin, 1902 stat. rev.

E. chrysura (Faimarie, 1846)

E. colombiana Sakakibara, 1996

E. conspersa ( Stål, 1869)

E. conica (Faimarie, 1846)

E. dorsalis (Faimarie, 1846)

E. ecuadorensis ( Fowler, 1894)

E. funkhouseri ( Goding, 1928) stat. rev.

E. gibbera ( Goding, 1930) reinst. comb.

E. lamariela Montalvo-Salazar & López-García sp. nov. E. maculicornis (Faimarie, 1846)

E. notata ( Stål, 1869)

E. nutans ( Stål, 1869)

E. pacifica (Faimarie, 1846)

E. scaramozzinoi Creão-Duarte & Sakakibara, 1994 E. sobria ( Walker, 1851)

Figures

FIGURE 1. Ennya chysura (Fairmaire): A. lateral view. Ennya scaromizzonoi Creão-Duarte & Sakakibara B. lateral view. Ennya sobria (Walker): C. frontal view, D. lateral view; ac: apical cell, av: anterior vertex, ax: apex of dorsal process, cc: central carina, dc: discoidal cell, dp: dorsal process, ha: humeral angles, lc: longitudinal carinae, mp: metopidium, pa: posterior apex, pv: posterior vertex, tc: transversal carinae. Scale bars: 3 mm.

FIGURE 2. Ennya allkukiru Montalvo-Salazar sp. nov. holotype male: A. lateral view, B. frontal view, C. dorsal view. Scale bars: 2 mm (A–C).

FIGURE 7. Ennya lamariela sp. nov. holotype male: A. frontal view, B. lateral view, C. dorsal view. Paratype melanic male: D. lateral view. Last-instar nymph: E. frontal view, F. lateral view. Scale bars: 1 mm (A, E–F) 2 mm (B–D).