Acrogonia youngi, 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 : 522-523

Acrogonia youngi sp. nov.

( Figs. 37–44 )

Total length. Male holotype 11.5 mm; male paratypes 11.0–12.0 mm (n = 7); female unknown.

Holotype description. Head and thorax. Structural features of head and thorax ( Figs. 37–38 ) much as described above for A. amazonensis sp. nov., except for median length of crown slightly longer than interocular width and approximately 8/10 transocular width.

Color. Anterior dorsum ( Fig. 37 ) brownish-green; anterior and lateral portions of crown up to frontogenal sutures brown with irregular yellow marks; antennal ledges, frontogenal, temporal, and coronal sutures dark brown to black; pronotum with narrow dark brown to black marks anteriorly and laterally; mesonotum with large dark brown to black area anteriorly, its apex pale yellow. Forewings ( Figs. 37–38 ) brownish-green, except for membranous portions. Face ( Fig. 38 ) yellow with narrow dark brown to black area on superior portion. Lateral and ventral portions of thorax and legs ( Fig. 38 ) mostly yellow; lateral lobe of pronotum narrowly dark brown to black on superior portion.

Male genitalia. Pygofer ( Fig. 39 ), in lateral view, strongly produced posteriorly; without ventral lobe; surface with scattered setae, which are more visible on distal half of disc. Subgenital plates ( Fig. 40 ), in ventral view, triangular, basal third slightly expanded laterally and then tapering gradually toward apex; in lateral view, plates elongate, extending almost as far posteriorly as pygofer apex; plate surface with scattered setae. Connective ( Fig. 41 ), in dorsal view, Y-shaped; arms very short; stalk very long, without median keel, apex slightly expanded. Style ( Fig. 41 ), in dorsal view, extremely elongate, extending posteriorly much farther than apex of connective; without preapical lobe; apical portion directed ventrally; apex acute. Aedeagus ( Figs. 42–43 ) symmetrical, slender, slightly curved dorsally, bifid distally; without processes. Anal tube ( Fig. 44 ) without processes.

Female unknown.

Etymology. The new species name is given in honor of the late Dr. David Allan Young (North Carolina State University, Raleigh) in recognition of his remarkable contribution to our knowledge of the world Cicadellidae , including the genus Acrogonia .

Type material. Holotype: male, “ PERU \ [department of] Madre de Dios \ sw Pto Maldonato \ 290m \ BM 1989-70” ( NHM) . Paratypes: one male, same data as holotype ( DZUP) ; one male, “CRUZEIRO DO SUL\ Acre— Brasil—II-63\ M. [Moacir] Alvarenga ” ( MNRJ) ; five males, “ Rio Branco—AC\ 12-Jan-2004 \ Albuquerque, E. S. ” ( DZRJ, DZUP, MNRJ) .

Figures

FIGURES 37 – 44. Acrogonia youngi sp. nov. 37, body, male holotype (NHM), dorsal view (total length 11.5 mm); 38, body, male holotype, lateral view; 39 – 44, male genitalia: 39, pygofer, lateral view; 40, subgenital plates, ventral view; 41, styles and connective, dorsal view; 42, aedeagus, lateral view; 43, aedeagus, ventral view; 44, anal tube, lateral view. Scale bars: 39, 4 0 = 2 mm; 44 = 1 mm; 41 – 43 = 0.5 mm.