A new species of Gypona from southern Brazil ( Hemiptera : Cicadellidae : Gyponini )

Gypona (Marganalana) masamunesp. nov. is described and illustrated based on specimens from Brazil, state of Parana. This species can be distinguished from the others of the genus by the following combination of characters: 1) connective with stalk apex oriented anteriorly; 2) style, in lateral view, L-shaped and broader subapically; apex tapered and acute; 3) aedeagus slender, curved dorsally, with long and slender processes arising on each side of shaft near the base, as long as aedeagus shaft; shaft without apical processes. A key to the six subgenera of Gypona is provided.

Based on specimens from Brazil, state of Paraná, a new species of Gypona (Marganalana) is described and illustrated.All specimens were collected by sweeping the substrate, especially grasses in open areas or understories.A key to the six subgenera of Gypona is provided, adapted from DELONG & FREYTAG (1964) with addition of Elevanosa and Ruana.

MATERIAL AND METHODS
The specimens studied are deposited in Coleção de Entomologia Pe.Jesus Santiago Moure, Universidade Federal do Paraná, Curitiba (DZUP) and Museu de Ciências e Tecnologia da Pontifícia Universidade Católica do Rio Grande do Sul, Porto Alegre (MCTP).The terminology follows mainly YOUNG (1968,1977), except for the head structures, where terms of HAMILTON (1981) are used, as suggested by MEJDALANI (1998) and leg chaetotaxy, which follows RAKITOV (1997).The techniques for preparation of male genital structures follow OMAN (1949) with some modifications described in CAVICHIOLI & TAKIYA (2012).Label data are given inside quotation marks, with a reversed slash (\) separating lines on the labels and a semicolon separating labels of a specimen.

Gypona (Marganalana) Metcalf, 1949
Type-species: Marganalana testacea Metcalf, 1949.Diagnosis.Body, in dorsal view, elongate.General coloration commonly uniform yellow (green in life), golden or brown, sometimes with color patterns.Pronotum commonly with a rounded black spot behind each eye.Head with crown margin distinct and with several transverse striae.Frontogenal sutures extending only as far as antennal pits.Forewings long, not reticulate.Pygofer commonly with a bifid apex.Aedeagus without atrial processes.
Distribution.The 186 described species are mainly from South America, approximately one-fourth are Central American and only two are from North America.
External morphology.Head (Fig. 1), in dorsal view, slightly produced with median length approximately fourtenths of interocular width.Ocelli closer to median line than to eye margins and slightly nearer anterior margin of crown.Head (Fig. 2), in frontal view, with frons slightly depressed medially just below crown margin.Clypeus straight, not inflated, slightly wider apically than basally.Head (Fig. 3), in lateral view, with anterior margin produced, thick and rounded, with transverse striae.Pronotum (Figs 1-3) declivous and transversally striated.Forewing (Fig. 4) approximately 3.2 times longer than wide, without extra crossveins, with R1 present and three closed anteapical cells; appendix well-developed.Foreleg with femur with AD, AM and PD rows reduced, with exception of apical setae AD1, AM1 and PD1; AV and PV rows formed by few and sparse setae, AV row restricted to proximal half and PD row restricted to distal half of femur, consisting of only two setae distant from each other; IC row formed by slightly arched comb of fine setae, beginning at distal half of femur and extending to AM1; foretibia with AV row with short setae on basal half; distal half with four setae two times longer and thicker than basal ones.Hind leg with femoral setal formula 2:2:1; tibia with row AD without intercalary setae between cucullate setae.
Male terminalia.Sternite VIII (Fig. 5) subrectangular, approximately 1.6 times wider than long; lateral corners of posterior margin rounded, middle portion slightly excavated on each side.Pygofer (Fig. 6) short, about 1.5 times longer than maximum height; posteroventral margin slightly more produced than posterodorsal one; apex truncated; macrosetae distributed only near apical portion; valve with conspicuous rounded notch on posterior margin.Subgenital plates (Fig. 7) approximately 3.6 times longer than wide; truncated at apex.Connective (Fig. 8) T-shaped, stalk apex oriented anteriorly; rami approximately as long as stalk.Style (Fig. 8), in dorsal view, with conspicuous truncated outer lobe; in lateral view (Fig. 9), L-shaped, with apical third broader and serrated ventrally; apex tapered, acute and curved dorsally.Aedeagus (Figs 10-11) very long and slender, curved dorsally; dorsal apodeme slender and produced dorsally; a pair of long and slender processes arising on each side of shaft near base, as long as aedeagus shaft; shaft without apical processes, slightly broader apically.
Female terminalia.Sternite VII (Fig. 12) approximately 2.4 times wider than median length; posterior margin with rounded and slightly produced lateral angles, concave on each side of median notch.Internal sternite VIII membranous.Pygofer (Fig. 13) approximately 1.8 times longer than maximum height; apex rounded; macrosetae present on ventroposterior two-thirds.First valvulae (Fig. 14) broad and approximately rectilinear; apical half with dorsal sculptured area strigate; ventral margin with median portion broadly rounded; apex (Fig. 15) narrowed with dorsoapical margin slightly concave.Second valvulae (Fig. 16) with greatest height near middle; dorsal margin with irregular teeth to apical half to apex; apex (Fig. 17) acute with very small teeth.
Material examined.Holotype, male: "S.Etymology.Gypona (M.) masamune (noun in apposition), the name refers to the aedeagus shape that resembles a kind of Japanese long sword called masamune.
Remarks.Gypona (M.) masamune sp.nov.can be easily distinguished from the other Gypona species by the slender aedeagus, with long and slender processes arising from the shaft base, as long as aedeagus shaft.This species is most similar to G. (M.) acuminata DeLong & Freytag, 1964, described from Colombia, due to the aedeagus with long and slender processes arising on each side of shaft near base and will key out to G. (M.) acuminata in the key to Marganalana by DELONG & FREYTAG (1964).
According to DELONG & FREYTAG (1964), G. (M.) acuminata has the head and pronotum black with a yellow spot surrounding ocelli and extending to base of crown; pronotum with lateral margins yellow and a pair of small yellow spots near anterior margin.The pygofer has a notch on dorsoapical margin and an acute apex.The style has the blade slightly broadened near the middle portion with the apex gradually tapered.The processes that arise from the base of aedeagal shaft are Gypona (M.) masamune sp.nov.differs from G. (M.) acuminata in having the head and pronotum yellow with a small black spot on the pronotum, just behind the eyes.The pygofer differs in lacking a notch on the dorsoapical margin and having the apex truncated.The style differs in having the blade broader at the apical third and apex abruptly tapered with an acute upturned tip.The aedeagus differs in having the basal processes as long as the shaft and parallel in posterior and lateral views, and the shaft curved dorsally.