Erythrogonia peclyae, Quintas & Silva & Takiya & Mejdalani, 2025

Quintas, Victor, Silva, Adriane P., Takiya, Daniela M. & Mejdalani, Gabriel, 2025, Exploring the diversity of leafhoppers from Brazil: five new species of Erythrogonia Melichar (Insecta: Hemiptera: Cicadellidae: Cicadellini), Zootaxa 5686 (2), pp. 249-269 : 252-254

Erythrogonia peclyae sp. nov.

Length. Male holotype 5.9 mm, male paratype 5.8 mm.

( Figs. 7 , 12–17 )

Head ( Figs. 7 , 12 ). Median length of crown approximately 0.7 of interocular width and 0.4 of transocular width; ocelli located approximately on imaginary line between anterior angles of compound eyes, each ocellus closer to adjacent anterior eye angle than to median line of crown; coronal suture distinct, coronal surface smooth, without shallow median concavity. Face with muscle impressions of frons poorly defined; epistomal suture complete; clypeus continuing profile of frons on upper portion and more nearly horizontal on lower portion.

Thorax ( Fig. 7 ). Pronotum, in dorsal view, with width slightly smaller than transocular width of head; lateral margins slightly convergent anteriorly; posterior margin approximately rectilinear; dorsolateral carina incomplete, almost rectilinear, slightly declivous anterad. Mesonotum with scutellum not transversally striate. Forewing with membrane well-delimited, including all apical cells except base of fourth; veins mostly distinct, not elevated; with three anteapical cells. Other features of head and thorax as in the generic description ( Young 1977, p. 767).

Male terminalia. Pygofer ( Fig. 13 ), in lateral view, moderately produced posteriorly; posterior margin narrowly rounded; without processes; apical margin with shallow emargination; macrosetae distributed mainly on dorsal margin and extending anteriorly along apical margin. Valve, in ventral view, subrectangular. Subgenital plate ( Fig. 14 ), in ventral view, elongate and slender, subtriangular, not extending as far posteriorly as pygofer apex; apex obtuse; plate fused to its counterpart at base; with uniseriate macrosetae. Connective ( Figs. 14, 15 ), in dorsal view, Y-shaped, arms short and broad, stalk with median keel. Style ( Figs. 14, 15 ), in dorsal view, extending posteriorly slightly beyond apex of connective; with preapical lobe, apex rounded, finger-shaped, strongly sclerotized and directed inwards. Aedeagus ( Figs. 16, 17 ) symmetrical; shaft, in lateral view, with rounded lobe at basidorsal portion; median portion with pair of ventral spines; apical portion with single spine directed ventrally; gonopore located apically. Paraphyses absent.

Female unknown.

Color ( Figs. 7 , 12 ). Crown dark brown to black, posterior portion with ivory subtriangular spot covering most of disk, crossing interocellar line. Eyes dark brown. Pronotum with subquadrate ivory spot covering most of disk, except laterally and posteriorly. Mesonotum reddish-brown. Forewing mostly reddish-brown with two ivory spots, one at median portion of clavus, extending to corium, over claval sulcus, another at apical portion of corium, extending to costal margin. Ground color of face yellow. Lateral and ventral portions of meso- and metathorax with yellow areas; legs mostly yellow.

Etymology. The new species name, peclyae , is given in honor of Dr. Nathalia Hiluy Pecly (Laboratório de Sistemática de Hemiptera, Departamento de Entomologia, Museu Nacional, UFRJ ) for her friendship and help in collecting leafhoppers.

Material examined. Brazil , state of Roraima. Male holotype: “ BRASIL, Roraima, Caracaraí, PARNA \ Viruá, 1°29’37’’N- 60°59’21’’W, \ 1–15.v.2017, suspensa, 20 m, \ J.A. Rafael, R. Boldrini-Rede BIA.” ( INPA). Paratype: one male, same data as the holotype ( INPA) .

Taxonomic notes. Erythrogonia peclyae sp. nov. is most similar to E. quadriplagiata ( Walker, 1851) , E. quissota Medler, 1963 , and E. taklara Medler, 1963 . These four species have similar coloration, including the spots on crown, pronotum, and forewings. However, the new species can be easily distinguished by the male terminalia, especially the peculiar shape of aedeagus ( Figs. 16, 17 ).

Figures

FIGURES 7–11. Dorsal habitus of holotypes of five new Brazilian species of Erythrogonia (antennae and legs omitted). 7, E. peclyae sp. nov. (Roraima); 8, E. dalvae sp. nov. (Amazonas); 9, E. adolfoi sp. nov. (Acre); 10, E. dmitrievi sp. nov. (Maranhão); 11, E. dietrichi sp. nov. (Goiás). Scale bars = 1 mm.

FIGURES 12–17. Erythrogonia peclyae sp. nov., male. 12, face, anterior view; 13, pygofer, lateral view; 14, subgenital plates, styles, and connective, dorsal view; 15, styles, and connective, dorsal view; 16, ejaculatory bulb and aedeagus, lateral view; 17, ejaculatory bulb and aedeagus, ventral view. Scale bars: 15 = 0.2 mm; 13, 14, 16, and 17 = 0.5 mm.