Spinagonalia Cavichioli, 2008, gen. nov.
Creators: name: Cavichioli, Rodney Ramiro
Publisher: name: Zenodo
Year: 2008
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Cicadellidae
Spinagonalia

description: Spinagonalia gen. nov.
(Figs 1 –13)
Type-species. Spinagonalia rubrovittata Cavichioli, sp. nov.
Description. Length. Ψ 6.87 – 7.43; ɗ 6,87 – 7,31
Head (Fig. 1). Crown moderately produced, length slightly more than half interocular width and slightly more than 3/10 transocular width; anterior margin rounded in dorsal view; without carina at transition from crown to face; with shallow median fovea; without sculpturing or setae. Epicranial suture distinct, extending to mid-length of crown. Frontogenal sutures extending onto crown and attaining ocelli. Ocelli on imaginary line between anterior eye angles; each equidistant from adjacent eye angle and median line of crown. Antennal ledges not protuberant in dorsal view; in lateral view slightly oblique and moderately carinate. Antennae almost as long as combined length of crown and pronotum. Frons convex; muscle impressions distinct. Epistomal suture incomplete for short distance medially. Clypeus in lateral view continuing profile of frons; slightly angled at mid-length; apex rounded.
Thorax (Fig. 1). Pronotum as wide as transocular width; lateral margins slightly convergent anteriorly; median length slightly more than half transhumeral width; dorsopleural carinae complete; posterior margin with slight median emargination; disc without sculpturing or pubescence. Mesoscutellum not striate. Forewing with distal membrane; veins distinct, slightly elevated; with four apical cells of which base of third is more distal than base of fourth; without anteapical plexus of veins; outer and inner anteapical cells closed, median one open; texture slightly coriaceous and without sculpturing; in females in rest position exceeding apex of ovipositor. Hindwing vein R2+3 incomplete. Hind leg with femoral setal formula 2-1-1; apical 2/3 of anterodorsal row of macrosetae with 3-5 short intercalary setae between each pair of macrosetae; first hind tarsomere slightly longer than combined length of two more distal tarsomeres; with two parallel rows of short setae on plantar surface.
Male genitalia. Pygofer moderately produced; without process; posterior margin broadly rounded; macrosetae numerous and distributed posteriorly from basal third to apex (Fig. 2). Valve transversely narrow and slender, W-shaped; anterior margin with median shallow emargination and posterior margin with median region projected posteriorly; articulating with pygofer and subgenital plates (Fig. 3). Subgenital plates extending posteriorly almost to pygofer apex; subtriangular, narrowed on apical two-thirds; with few uniseriate macrosetae on lateral margins, not fused basally (Fig. 3). Style narrowed, short, with slight preapical lobe and truncate apex (Fig. 4). Connective short and robust; with median dorsal keel (Fig. 4). Paraphysis very short, cordiform and fused with connective apex (Fig. 4). Aedeagus with shaft slen- der, curved gradually dorsally (Fig. 5); with pair of slender acute dorsoapical processes (Fig. 6). Anal tube segment X with pair of basal ventrolateral processes, acute and curved posteriorly (Fig. 5).
Female genitalia. Pygofer moderately produced; posterior margin narrowly rounded; macrosetae distributed on apical third and along ventral margin (Fig. 7). Sternite VII moderately produced; posterior margin emarginated with two lobes laterally and posterolateral margins slightly angled (Fig. 8). Internal sternite VIII slightly sclerotized and covering bases of first valvulae of ovipositor (Fig. 9). First valvula with triangular bases and foot-shaped dorsal projection (Fig. 10), apex acute (Fig. 11). Second valvula broadened along apical two-thirds; dorsal margin of expanded area regularly convex, bearing approximately 22 continuous teeth, basal three teeth close-set and five next much larger than others; ventral prominence slightly distinct; apex acute to narrowly rounded (Fig. 12).
Remarks. The new genus is apparently related to the Erythrogonia generic group sensu Young, 1977, sharing with some genera in this group the following characteristics: 1— presence of anal tube processes as found in Inuyana Young, 1977, although apical in the latter and basal in Spinagonalia; 2—connective similar to that of Inuyana; both are narrow and with a keel projected anteriorly; 3—aedeagus slender with elongate apical processes similar to those of Aguatala Young, 1977; 4 —paraphysis short, similar to that of Pegogonia Young, 1977.
description: Published as part of Cavichioli, Rodney Ramiro, 2008, A new Neotropical sharpshooter genus Spinagonalia (Insecta, Hemiptera, Cicadellidae, Cicadellinae) with description of a new species from Citrus orchards and grapevines, pp. 61-64 in Zootaxa 1746 on pages 61-63, DOI: 10.5281/zenodo.181655