Subrasaca rubra Silva, Cavichioli et Mejdalani,

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: 376-379

publication ID

http://dx.doi.org/10.11646/zootaxa.3722.3.6

publication LSID

lsid:zoobank.org:pub:CE3290EF-E03F-4BEC-9C0D-9D270B928051

persistent identifier

http://treatment.plazi.org/id/DBD88A82-D8B2-4F26-B5D3-757F77E3CA82

taxon LSID

lsid:zoobank.org:act:DBD88A82-D8B2-4F26-B5D3-757F77E3CA82

treatment provided by

Plazi

scientific name

Subrasaca rubra Silva, Cavichioli et Mejdalani
status

sp. nov.

Subrasaca rubra Silva, Cavichioli et Mejdalani  , sp. nov.

( Figs 21–37View FIGURES 21 – 28View FIGURES 29 – 37)

Length. Male holotype, 7.5 mm; male paratypes, 7.0- 7.3 mm (n = 2); female paratypes, 7.7 mm (n = 2).

Holotype description. Head and thorax. Structural features of head and thorax much as described above for S. diminuta  sp. nov., except crown with transverse concavity anterad of ocelli.

Color. Crown ( Fig. 21View FIGURES 21 – 28) entirely black. Pronotum ( Fig. 21View FIGURES 21 – 28) black with two large, transverse orange stripes on median third, touching each other medially. Mesonotum ( Fig. 21View FIGURES 21 – 28) black. Forewings ( Fig. 21View FIGURES 21 – 28) with two orange-red areas, smaller area at base of clavus and much larger area on corium and clavus, covering most of wing surface and thus delimiting dark brown to black areas as follows: complete transverse stripe basally, elongate, transcommissural subtriangular area on clavus, narrow stripe along basal half of costal margin with small transverse projection approximately at middle, and most of corium behind apex of clavus. Face mostly dark brown to black; with dirty white area extending from inferior surface of antennal ledge to upper limit of lorum; labrum brownish-white; rostrum dark brown. Lateral and ventral portions of thorax mostly dark brown to black; legs brown with extensive whitish portions.

Male genitalia. Pygofer ( Fig. 22View FIGURES 21 – 28), in lateral view, not strongly produced posteriorly, quadrangular, posterior margin truncate; without processes; macrosetae distributed mostly on distal third of disk and ventrally on median third. Subgenital plates ( Fig. 23View FIGURES 21 – 28), in ventral view, subtriangular; outer margin rounded on basal third, plates then tapering gradually toward apex; connected to each other basally by membranous triangular area; in lateral view, extending about as far posteriorly as pygofer apex; with few uniseriate macrosetae. Connective ( Fig. 24View FIGURES 21 – 28), in dorsal view, Y-shaped, with short arms and broad stalk narrowing toward apex. Style ( Fig. 24View FIGURES 21 – 28), in dorsal view, extending posteriorly slightly farther than apex of connective; preapical lobe distinct, bearing few setae; apical portion directed outward; apex truncate. Aedeagus ( Fig. 25View FIGURES 21 – 28) short; shaft with dorsal lobe bearing strong digitiform process directed dorsally; gonoduct distinct, sclerotized. Paraphyses ( Fig. 26View FIGURES 21 – 28) symmetrical, with pair of elongate rami; each ramus with apical half slender and curved ventrally; without projections or processes.

Female genitalia. Abdominal sternite VII ( Figs 27, 28View FIGURES 21 – 28), in ventral view, with shallow, broad median emargination on posterior margin; lateroposterior portions rounded. Internal sternite VIII ( Fig. 29View FIGURES 29 – 37), in dorsal view, with pair of small digitiform sclerites directed ventrally. Pygofer, in lateral view, well produced posteriorly; apex obtuse; macrosetae distributed mostly on posterior portion and extending anteriorly along ventral margin. First valvifers ( Fig. 30View FIGURES 29 – 37), in lateral view, produced dorsally, dorsal margin broadly convex. First valvulae ( Fig. 30View FIGURES 29 – 37), in lateral view, with dorsal margin slightly concave, ventral margin distinctly convex; apex acute; ventral interlocking device elongate, extending posteriorly beyond basal half of blade, about 1 / 3 of its length adjacent to ventral blade margin, apical 2 / 3 directed dorsally; dorsal sculptured area ( Figs 31, 32View FIGURES 29 – 37) extending from basal portion of blade to apex, formed mostly by scale-like processes arranged in oblique lines except for irregular processes basally; ventral sculptured area ( Fig. 33View FIGURES 29 – 37) restricted to apical portion of blade, formed mostly by scale-like processes. Second valvulae ( Fig. 34View FIGURES 29 – 37), in lateral view, with dorsal margin slightly concave, ventral margin convex; preapical prominence ( Fig. 37View FIGURES 29 – 37) small but distinct; apex subacute; dorsal margin with about 17 low, flat continuous teeth ( Figs 35, 36View FIGURES 29 – 37), some of them very elongate; denticles ( Figs 35–37View FIGURES 29 – 37) distributed on teeth and on apical portion of blade, except at apex; dorsal dentate apical portion greater than ventral one; blade with ducts ( Fig. 35View FIGURES 29 – 37) extending to apical portion and to teeth or terminating below latter. Gonoplacs much as described above for S. diminuta  sp. nov.

Intraspecific variation. We have observed a great deal of color variation in S. rubra  sp. nov. The transverse pronotal markings vary from orange to yellow, may be broad or narrow, divided into smaller marks, or even absent. The form of the large orange-red area of the forewings is also quite variable; this area may be interrupted by irregular dark brown areas or it may include irregular yellow portions.

Etymology. The new species name, rubra  , refers to the large orange-red areas on the forewings.

Type material. Southeastern Brazil. Holotype: male, “ Brasil, MG [Minas Gerais State], Itamonte \ 2100 – 1700m altitude \ 21–23.XI. 2008 \ CARVALHO, R.; EVANGELISTA, O. & \ TAKIYA, D. Cols” (MNRJ). Paratypes: two males, two females, same data as holotype (MNRJ, DZUP); two males, three females, “Brasil-Minas \ Gerais- Itamonte \ 13–15 /XI/ 1998 \ D. TAKIYA leg.” (DZRJ); one male, “ BRASIL: MG, Itamonte \ 2400 – 1700m asl \ 01– 03.XI. 2007 \ D. M. Takiya leg.” (DZRJ); two males, Brasil, MG, Itamonte \ 1700–2400m altitude \ 24–29.XI. 2010 \ CARVALHO, R.A. Col.” (MNRJ); one male, same data as preceding except “ 2400 – 1700m altitude” (MNRJ); one male, “SUBIDA P/O P.N. \ ITATIAIA, DIVISA \ RJ-MG [border between Rio de Janeiro and Minas Gerais states] \ 30 /X/ 1993 \ G. MEJDALANI col.” (DZRJ); two females, “BR/SP, S. J. do Barreiro, \ P. N. S. Bocaina 1300 – \ 1600m alt 16–21.XII. 2010 \ CARVALHO, R.A. Col.” (MNRJ).