Subrasaca nigriventris (Signoret, 1855)

Silva, Roberta Dos Santos Da, Cavichioli, Rodney Ramiro & Mejdalani, Gabriel, 2013, Descriptions of three new Brazilian Subrasaca species, redescription of S. nigriventris (Signoret, 1855) and a key to males of the genus (Hemiptera: Cicadellidae: Cicadellini), Zootaxa 3722 (3), pp. 372-384 : 381-382

Subrasaca nigriventris (Signoret, 1855)

( Figs 47–55 )

Tettigonia nigriventris Signoret, 1855: 784 , pl. 24, fig. 1. Lectotype from Brazil designated by Young (1964: 12), female (Museum für Naturkunde der Humboldt-Universität, Berlin); photograph examined.

Length. Males, 5.4–5.9 mm (n = 2); females, 6.3–6.5 mm (n = 2).

Head and thorax. Structural features of head and thorax much as described above for S. diminuta sp. nov. Color. Anterior dorsum and forewings dark brown to black. Crown ( Fig. 47 ) with ellipsoid, transverse orange macula located anterad of ocelli and connected laterally to pair of large orange maculae delimiting posterior, Mshaped black area; large area on anterior coronal portion and pair of maculae on posterior margin brown; with pair of narrow dark brown to black stripes located anteriorly to orange area. Pronotum ( Fig. 47 ) with pair of large brown areas anteriorly followed by pair of large, oblique orange maculae. Forewings ( Fig. 47 ) with orange maculae and stripes distributed as follows: clavus with three large maculae, basal half of corium with elongate stripe near costal margin, distal half of corium with stripe extending from apex of clavus over inner anteapical cell and with small macula on basal portion of fourth apical cell near costal margin. Face, lateral and ventral portions of thorax and legs mostly pale yellow; abdomen mostly dark brown.

Male genitalia. Pygofer ( Fig. 48 ), in lateral view, moderately produced posteriorly; posterior margin rounded inferiorly and more truncate superiorly; without processes; macrosetae distributed mostly on distal third of disk and more anteriorly on ventral portion. Subgenital plates ( Fig. 49 ), in ventral view, subtriangular, basal half expanded laterally, then tapering gradually toward apex; connected to each other basally by membranous triangular area; in lateral view, not extending as far posteriorly as pygofer apex; with uniseriate macrosetae. Connective ( Fig. 50 ), in dorsal view, Y-shaped; stalk long, expanded apically; arms poorly differentiated. Styles ( Fig. 50 ), in dorsal view, extending posteriorly slightly farther than apex of connective; preapical lobe distinct, with few setae; apical portion directed outward; apex clearly truncate. Aedeagus ( Fig. 51 ) elongate; in lateral view, with slight dorsal lobe; with conspicuous pair of ventroapical retrorse spiniform processes; gonoduct distinct. Paraphyses ( Fig. 52 ) symmetrical with two strong rami; distal half of rami directed inward, forming right angle with basal half.

Female genitalia. Abdominal sternite VII ( Figs 53, 54 ), in ventral view, with posterior margin simple, truncate or slightly concave medially. Internal sternite VIII ( Fig. 55 ), in dorsal view, with pair of small sclerites located adjacent to each other medially. Pygofer, first valvifers, valvulae, and gonoplacs much as described above for S. diminuta sp. nov. Second valvulae, in lateral view, with about 18 teeth.

Material examined. Southeastern Brazil. Two males, four females, “BR [ Brazil] RJ [Rio de Janeiro State] Nova Friburgo \ Macaé de Cima \ 21–22/VI/2003 \ P. Ceotto col.” (MNRJ, DZUP); one male, one female, “ BRASIL – RJ \ Macaé de Cima \ 20–21/I/2001 \ Ceotto e Roquete” (MNRJ); one female, “MACAÉ DE CIMA \ NOVA FRIBURGO-RJ \ 2/II/1992 \ G. MEJDALANI col.” (DZRJ); one male, “BR/RJ, Nova Friburgo \ Vale dos Pinheiros \ 16–18/2/2010 \ Gabriel Mejdalani & \ Ana Alves col.” (MNRJ); one male, “ Brasil, RJ \ Teresópolis \ 21-VII-1991 \ G. Mejdalani” (MNRJ); two females, “SERRA DO SUBAIO \ TERESÓPOLIS - RJ \ 22/V/1992 \ G. MEJDALANI col.” (DZRJ); one male, same data as preceding except “ 21/VII/1991 ” (DZRJ); one female, “ Brasil, RJ, Teresópolis \ Serra do Subaio \ 17/ 18-VIII-1996 \ Felix e Mejdalani cols.” (MNRJ); one male, “PARQUE NACIONAL \ SERRA DOS ÓRGÃOS \ TERESÓPOLIS - RJ \ 30/VIII/1992 \ G. MEJDALANI col.” (DZRJ); one male, one female, “BR-RJ-Teresópolis \ Vale da Revolta \ 29-V-1998 \ G. Mejdalani col.” (MNRJ).

Figures

FIGURES 47 – 55. Subrasaca nigriventris (Signoret, 1855). 47, body, male, dorsal view (length 5.6 mm); 48 – 52, male genitalia: 48, pygofer, lateral view; 49, valve and subgenital plates, ventral view; 50, styles and connective, dorsal view; 51, ejaculatory reservoir, aedeagus, and anal tube, lateral view; 52, paraphyses, dorsal view; 53 and 54, female sternite VII, ventral view (macerated and unmacerated specimen, respectively); 55, first valvifers and sclerites of internal sternite VIII, dorsal view. Abbreviations: SST = sclerite of internal sternite VIII, VAL = first valvifer. Scale bars: 48, 49, 53 = 0.5 mm; 50, 52 = 0.3 mm; 51, 55 = 0.4 mm.