Erythrogonia adolfoi, 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 : 255-257

Erythrogonia adolfoi sp. nov.

Length. Male holotype 6.5 mm; male paratypes 6.5–6.6 mm (n = 3).

( Figs. 9 , 24–30 )

Head ( Figs. 9 , 24 ). Median length of crown approximately 0.6 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 distinct; epistomal suture interrupted medially; clypeus continuing profile of frons on upper portion and more nearly horizontal on lower portion.

Thorax ( Fig. 9 ). Pronotum, in dorsal view, with width approximately equal to transocular width of head; lateral margins convergent anteriorly; posterior margin slightly concave medially; dorsolateral carina complete, 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. 25 ), in lateral view, moderately produced posteriorly; posterior margin broadly rounded; without processes; macrosetae distributed mainly on posterior margin and extending anteriorly along ventral margin. Subgenital plate ( Fig. 26 ), in ventral view, slender, subtriangular, not extending posteriorly as far as pygofer apex; basal half slightly expanded; distal half narrowed; apex obtuse; plate not fused to its counterpart at base; with macrosetae along lateral margin. Connective ( Figs. 26, 27 ), in dorsal view, narrow, stalk with strong keel extending anteriorly and posteriorly. Style ( Figs. 26, 27 ), in dorsal view, elongate, extending much farther posteriorly than apex of connective; apophysis without preapical lobe, apex obtuse.Aedeagus ( Figs. 29, 30 ) symmetrical; shaft, in lateral view, short, expanded anteapically (axe-shaped) and bearing pair of slender lateral decurved tapering processes; gonopore located apically. Paraphyses ( Figs. 26, 28 ) symmetrical; stalk, in dorsal view, elongate and tubular; apical portion with pair of projections directed laterally and pair of projections directed posteriorly (lateral margins of projections irregularly dentated and inner ones bearing several spiniform processes).

Female unknown.

Color ( Figs. 9 , 24 ). Crown mostly pale yellow to orange, with median black spot at anterior margin; ocelli surrounded by small black spot; posterior margin somewhat pale yellow to ivory. Eyes dark brown to black. Pronotum reddish-brown, with large pale yellow to ivory spot at median portion extending from anterior to near posterior margin. Mesonotum entirely brown to dark brown. Forewing mostly reddish-brown, with pale yellow to ivory spot at basal portion of clavus and extending to corium, irregularly bordered with dark brown; apical portion of corium with elongate pale yellow to ivory spot near apex of clavus, extending to costal margin, irregularly bordered with bright red. Ground color of face light orange to orange. Lateral and ventral portions of meso- and metathorax with yellow areas; legs mostly light orange to orange.

Etymology. The new species name, adolfoi , is given in honor of Adolfo Gonçalves Quintas, grandfather of the first author.

Material examined. Brazil , state of Acre. Male holotype. “ BRASIL, Acre, Cruzeiro \ do Sul r. Moa 073702S \ 724615W, 19–28.xi.1996 \ J.A. Rafael; J. Vidal & \ R.L. Menezes, Arm. Malaise.” ( INPA). Paratypes: three males, same data as the holotype ( INPA) .

Taxonomic notes. Among the known Erythrogonia species, E. adolfoi sp. nov. is most similar to E. execta Medler, 1963 , E. quadriguttata ( Fabricius, 1787) , E. ladonia Medler, 1963 , E. pectinata Young, 1977 , E. priscilla Medler, 1963 , and E. sonora Melichar, 1926 . In these seven species, the ground color of crown is pale yellow to orange and a black spot surrounds or is adjacent to each ocellus. Erythrogonia pectinata and E. adolfoi sp. nov. share similar paraphyses. The new species can be recognized by the male terminalia, especially by the axe-shaped apex of the aedeagus ( Fig. 29 ) and the peculiar apical portion of the paraphyses ( Figs. 26, 28 ).

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 24–30. Erythrogonia adolfoi sp. nov. Male. 24, face, anterior view; 25, pygofer, lateral view; 26, subgenital plates, styles, connective, and paraphyses, dorsal view; 27, styles and connective in greater detail, dorsal view; 28, apical portion of paraphyses, dorsal view; 29, aedeagus, lateral view; 30, aedeagus, ventral view. Scale bars: 25–30 = 0.5 mm.