Acrogonia barbara, Silva, Roberta Dos Santos Da, Cavichioli, Rodney R., Takiya, Daniela M. & Mejdalani, Gabriel, 2017

Silva, Roberta Dos Santos Da, Cavichioli, Rodney R., Takiya, Daniela M. & Mejdalani, Gabriel, 2017, Descriptions of eight new Acrogonia species from the Amazon region, including peculiar features of the female genitalia (Hemiptera: Cicadellidae: Cicadellinae: Proconiini), Zootaxa 4244 (4), pp. 515-534 : 519-522

Acrogonia barbara sp. nov.

( Figs. 18–36 )

Total length. Male holotype 10.0 mm; male paratypes 9.0–10.0 mm (n = 5); female paratypes 10.2–11.0 mm (n = 4).

Holotype description. Head and thorax. Structural features of head and thorax ( Figs. 18–19 ) much as described above for A. amazonensis sp. nov., except for median length of crown approximately equal to interocular width and 6/10 transocular width.

Color. Crown ( Fig. 18 ) mostly brown with irregular yellow and dark brown to black marks; frontogenal and temporal sutures covered by dark brown to black marks delimiting yellow area between ocelli and anterior portion of eyes. Pronotum ( Fig. 18 ) brown with yellow irregular areas on margins of disc. Mesonotum ( Fig. 18 ) brown with two small dark brown marks on anterior margin; anteapical portion yellow and apex pale yellow. Forewings ( Figs. 18–19 ) reddish-brown, except for membranous portions. Face, lateral and ventral portions of thorax, and legs ( Fig. 19 ) mostly yellow; superior portion of face and of lateral lobe of pronotum narrowly dark brown, latter also with brownish-green macula.

Male genitalia. Pygofer ( Fig. 20 ), in lateral view, strongly produced posteriorly; ventral margin forming lobe; setae distributed mostly on median and distal third of disc. Subgenital plates ( Figs. 20–21 ), in ventral view, subtriangular, basal third expanded laterally and then tapering to middle portion; apical portion slender, appearing articulated with basal portion; in lateral view, plates short, not extending posteriorly beyond basal half of pygofer ( Fig. 20 ); plate surface with scattered setae. Connective ( Fig. 22 ), in dorsal view, T-shaped; arms broad; stalk with median keel ( Fig. 23 ), apex distinctly expanded. Style ( Fig. 22 ), in dorsal view, extending posteriorly distinctly beyond apex of connective; preapical lobe slight, bearing few setae; apical portion directed outward; apex acute. Aedeagus ( Fig. 24 ) symmetrical; shaft strongly angled, apical portion directed dorsally; base with pair of slender elongate processes that extend posteriorly slightly beyond shaft apex; latter with small process directed basally. Anal tube ( Fig. 20 ) with pair of elongate basiventral processes, their apices acute and directed anteriorly.

Female. Genitalia. Sternite VII ( Figs. 25–26 ) bilobed; posterior margin with deep median emargination. “Internal” sternite VIII ( Fig. 27 ), in dorsal view, fused laterally to first valvifers. Pygofer, in lateral view, moderately produced posteriorly; apex obtuse; setae distributed mostly on posterior portion. First valvifers ( Fig. 28 ), in lateral view, with posteroventral lobe. First valvulae ( Fig. 29 ), in ventral view, expanded basally; in lateral view ( Fig. 30 ), with apex acute, dentiform; ventral interlocking device located on basal half of blade; dorsal sculptured area ( Fig. 31 ) extending from basal portion of blade to apex, formed mostly by scale-like processes arranged in oblique lines; ventral sculptured area ( Fig. 32 ) restricted to apical portion of blade, formed mostly by scale-like processes. Second valvulae ( Fig. 33 ), in lateral view, with dorsal margin convex; ventral margin approximately straight; preapical prominence strong; apex obtuse; about 20 teeth ( Figs. 33–35 ) distributed on dorsal expanded portion of blade; most teeth ( Fig. 34 ) triangular, armed with denticles, with ascending portion (= anterior edge) short, descending portion (= posterior edge) elongate; basalmost two or three teeth small and inconspicuous; blade with ducts ( Figs. 34–35 ) extending to apical portion and to teeth or terminating below latter; few basal teeth without ducts. Gonoplacs ( Fig. 36 ), in lateral view, with basal half narrow and apical half distinctly expanded; apex obtuse.

Intraspecific variation. The color of crown varies from brown to dark yellow and that of pronotum varies from brown with the anterior margin yellow to entirely yellow. Some variation may be due to fading of coloration in preserved specimens.

Etymology. The new species is described in honor of dipterist Barbara Proença (Departamento de Entomologia, Museu Nacional, UFRJ) for her friendship and help in collecting leafhoppers. The species epithet is a noun in apposition.

Type material. Holotype: male, “SINOP-M. [Mato] Grosso\ Brasil-X/1975\ M. [Moacir] Alvarenga” (DZUP). Paratypes: three males and one female, “Sinop—MT [state of Mato Grosso]\ X.1976 \ M. Alvarenga col” ( DZUP, DZRJ) ; two females, “SINOP-M. Grosso \ Brasil X/1975 \ M. Alvarenga ” ( MNRJ) ; one male, “ SINOP MATO GROSSO \ Brasil X-1975 \ M. Alvarenga Leg ” ( MNRJ) ; one female, “SINOP—MATO GROSSO\ BR X/ 1975 \ M. Alvarenga leg” (DZUP).

Figures

FIGURES 18 – 24. Acrogonia barbara sp. nov. 18, body, male paratype (DZUP), dorsal view (total length 9.0 mm); 19, body, male paratype, lateral view; 20 – 24, male genitalia: 20, pygofer, subgenital plate, style and anal tube with basal process, lateral view; 21, valve and subgenital plates, ventral view; 22, styles and connective, dorsal view; 23, keel of the stalk of the connective, lateral view; 24, aedeagus and its basal processes, lateral view. Scale bars: 20 = 1 mm; 21, 22, 24 = 0.5 mm; 23 = 0.2 mm.

FIGURES 25 – 36. Acrogonia barbara sp. nov., female. 25 – 26, sternite VII, ventral view (macerated and unmacerated specimen, respectively); 27, “ internal ” sternite VIII, dorsal view, fused laterally to first valvifers; 28, first valvifer, lateral view; 29, first valvulae, ventral view; 30, first valvula, lateral view; 31, apical portion of dorsal sculptured area; 32, ventral sculptured area; 33, second valvula, lateral view; 34, teeth at median portion of blade; 35, teeth at apical portion of blade; 36, second valvifer and gonoplac, lateral view. Scale bars: 25, 29, 30, 33 = 1 mm; 27, 28 = 0.5 mm.