Segonalia domahovskii, Alasmar & Cavichioli, 2023

Alasmar, Luísa & Cavichioli, Rodney Ramiro, 2023, A new Brazilian species of Segonalia Young 1977 (Hemiptera, Cicadellidae, Cicadellini) and key to species, Zootaxa 5374 (3), pp. 445-450 : 446-447

Segonalia domahovskii sp. nov.

Diagnosis: Sharpshooters with overall coloration yellow (Figs 1,2), with posterior two-thirds of pronotum and forewing clavus green, forewing corium membranous. Aedeagus ( Fig 7 ) with apodemes almost as long as shaft, dorsal flanges on median third. Paraphysis ( Fig 7 ) curved dorsally, tapered, apex extending nearly aedeagus apex, dorsal margin without processes.

Measurements. Holotype male: 4.9 mm. Paratypes: 5 males: 4.75–4.9 mm; 2 females: 4.65–4.9 mm.

Description. Head (Figs 1,2) with median length of crown ½ of interocular width and 1/3 of transocular width, without concavities between ocelli, texture shagreen. Frons ( Fig 3 ) with muscle impressions slightly distinct, median disk texture shagreen. Clypeus texture shagreen. Genae texture smooth. Pronotum (Fig 1,2) with basal third texture smooth, posterior two-thirds with slightly transversal rugosities, dorsopleural carinae complete; posterior margin slightly concave. Venation slightly distinct. Other features as in original description of the genus ( Young 1977, p. 999).

Male genitalia: Pygofer ( Fig 5 ), in lateral view, moderated produced; surface with very small dentiform cuticular sculpting, more concentrated in apical third of ventral margin, macrosetae distributed along apical third; apex peaked, directed dorsally. Valve ( Fig 4 ) fused to subgenital plates. Subgenital plates ( Fig 4 ) fused until apical third; in ventral view, each subtriangular, narrowing gradually towards apex, outer margin with multiseriate row of macrosetae; in lateral view, not extending posteriorly than half of pygofer. Connective ( Fig 6 ), in dorsal view, Yshaped, stem very long. Style ( Fig 6 ), in dorsal view, not extending posteriorly to connective apex, without preapical lobe, apex foot-shaped, directed outwards and without setae.Aedeagus ( Fig 7 ), in lateral view, with dorsal apodemes almost as long as shaft; shaft directed posteriorly, lying medially; base broadened throughout basal half; dorsal margin with a pair of lateral flanges in median third, apex with a short ventral acute median process. Paraphysis ( Fig 7 ), in lateral view, with ramus tapered, curved dorsally, extending to aedeagus apex; without processes or protuberances basally; apex acute.

Female genitalia: Female sternite VII ( Figs 8–10 ) well produced, gradually tapered to subacute apex. Internal sternite VIII mostly membranous, slightly sclerotized at connection to bases of first valvulae. Pygofer ( Fig 9 ) moderately produced; apex triangular; macrosetae distributed in apical half. First valvifer ( Fig 11 ) sub oval. First valvula ( Figs 11, 12 ) of ovipositor rectilinear, expanded dorsally in apical half, apex acute; dorsal sculpted area extending from basis to apex of blade, scale-like; ventral sculpted area restricted to apical portion, scale-like. Second valvula of ovipositor ( Figs 13–15 ) slightly expanded after basal curvature, dorsal margin bearing approximately 16 continuous teeth; each tooth subtriangular and elongate with denticles throughout length; preapical area with denticles on dorsal and ventral margins; preapical prominence distinct; apex acute. Gonoplac ( Figs 16, 17 ) narrowed basally, expanding dorsally in apical half, apex narrowly rounded with many tiny denticule in outer surface.

Coloration. Crown ( Figs 1–3 ) yellow, T-shaped black macula directed posteriorly, dark rounded macula in ocelli, rounded black macula in the transition from crown to face, black stripe on frontogenal suture at antennal lobe. Other facial structures yellow. Pronotum with anterior third yellow, posterior two-thirds green. Mesonotum yellow, pair of rounded dark macula laterally. Forewing translucent with veins yellow, clavus green with apical portion yellow. Thorax, abdomen, and legs yellow.

Etymology. The species epithet is given in honor to our colleague Alexandre Cruz Domahovski, who collected the holotype, and contributes to the studies of the New World Cicadellidae .

Type material: Holotype: ♁ “ Brasil, Planaltina —DF, Embrapa \ Cerrados, próx. Do reservató- \ rio de água, 1025m, 15°36’33”S \ 47°42’42”W, 01–31.V.2018 \ sweep, A. C. Domahovski leg.” ; Paratypes: 5♁, 1♀, same data as holotype ( DZUP) ; 1♀, “ Pedra Azul \ MG [Minas Gerais] XII.1971 \ Seabra e Oliveira” ( DZUP) .

Figures

FIGURES 1–7. Segonalia domahovskii sp. nov. Male holotype. 1, Body, dorsal view. 2, Body, lateral view. 3, Face, frontal view. 4–7, Male genitalia. 4, Genital capsule, lateral view. 5, Valve and subgenital plates, ventral view. 6, Connective and style, dorsal view. 7, Paraphysis and aedeagus, lateral view. Scale bars in mm.

FIGURES 8–17. Segonalia domahovskii sp. nov., female terminalia. 8, Distal portion of abdomen, ventral view. 9, Distal portion of abdomen, lateral view. 11, First valvifer and first valvula, lateral view. 12, Apical portion of first valvula. 13–15, Second valvula. 13, Lateral view. 14, Teeth at basal portion. 15, Apical portion. 16–17, Second valvifer and gonoplac. 16, Lateral view. 17, Apical portion Scale bars in mm.