Gypona flavicosta Stål, 1862 (Domahovski & Cavichioli, 1862)

Domahovski, Alexandre C. & Cavichioli, Rodney R., 2023, Eight new species of Costanana DeLong & Freytag (Hemiptera: Cicadellidae: Gyponini): taxonomic changes, key to males, and description of Metacostana gen. nov., European Journal of Taxonomy 889 (1), pp. 1-53 : 40-43

Gypona flavicosta Stål, 1862 comb. nov.

Figs 23–24

Gypona flavicosta Stål, 1862: 46 .

Costanana flavicosta – DeLong & Freytag 1972b: 498.

Material examined

Holotype BRAZIL • ♂; “ Rio Jan ”, “ F. Sahlb ”, “NHRS-GULI \ 000097313”; NHRS 97313 .

Other material

BRAZIL – Paraná (new record) • 2 ♂♂, 1 ♀; Antonina, RPPN Guaricica , 25.316° S, 46.696° W; DZUP . – Espírito Santo (new record) • 2 ♂♂, 1 ♀; Domingos Martins; 20°22′17.3″ S, 41°03′47.7″ W; DZUP .

Description

FEMALE TERMINALIA. Sternite VII ( Fig. 24A, C ), in ventral view, 2× as wide as long; posterolateral margins rounded, not produced posterad; posterior margin weakly V-shaped, notched medially and shallowly excavated on each side of middle portion. Internal sternite VIII membranous. Pygofer ( Fig. 24A–B ), in lateral view, 2× as long as high; macrosetae distributed on posteroventral quadrant; apex rounded. First valvifer ( Fig. 24D ) trapezoid, 1.5× as high as wide, fused to each other by an extension of anteroventral angle; anterodorsal and posteroventral angles rounded. First valvula ( Fig. 24D ) 5.5× as long as high, moderately broad, dorsal and ventral margins parallel; ventral interlocking device short, restricted to basal third; dorsal sculptured area strigate, extending ventrally on apical portion; apical portion ( Fig. 24E ) abruptly tapered; apex acute. Second valvula ( Fig. 24F ) 4.3× as long as high; dorsal protuberance rounded, moderately developed, localized at nearly half-length of blade; apical portion ( Fig. 24G ) dorsal margin with a few rounded denticles subapically; ventroapical margin without denticles; apex subacute. Second valvifer ( Fig. 24H ) approximately 2.6× as high as wide. Gonoplac ( Fig. 24H ) 3.2× as long as high; dorsoapical margin straight and oblique, one-third of gonoplac length; ventral margin evenly rounded, with a few short setae; outer surface ( Fig. 24I ) with many integumentary denticles; rounded apex.

Remarks

Gypona flavicosta is remarkably similar in coloration and external morphology to C. asymmetrica and was described based on a single male from Rio de Janeiro State, Brazil ( Fig. 23A–D ). DeLong & Freytag (1972b) transferred this species to Costanana . We studied four males and two females from the states of Paraná and Espírito Santo, Brazil.

The following characteristics of the female ovipositor are incongruent when compared to the other species of Costanana : (1) the first valvula wide ( Fig. 24D ); (2) the ventral interlocking device short ( Fig. 24D ); (3) the apex abruptly tapered ( Fig. 24E ); (4) the second valvula wider medially ( Fig. 24F ); (5) the dorsal protuberance rounded and most prominent ( Fig. 24F ); (6) the denticles located subapically ( Fig. 24G ). Furthermore, in addition to G. asymmetrica (junior synonym of Gypona viridans ) we are suggest transferring Costanana flavicosta to Gypona because this species differs from other species of Costanana in the coloration being uniformly yellow ( Fig. 23A, E ), the crown surface having oblique-rugose striae ( Fig. 25D ), and the alar appendix being undeveloped ( Fig. 23A, E ).

Figures

Fig. 23. Gypona flavicosta Stål, 1862 comb. nov. A–D. Holotype, ♂ (NHRS 97313). A. Habitus, dorsal view. B. Habitus, lateral view. C. Male genitalia. D. Labels. E–F. Specimen, ♂ (DZUP). E. Habitus, dorsal view. F. Habitus, lateral view.

Fig. 24. Gypona flavicosta Stål, 1862 comb. nov., ♀ (DZUP). A. Apical portion of abdomen, ventral view. B. Apical portion of abdomen, lateral view. C. Sternite VII, ventral view. D. First valvifer and first valvula, lateral view. E. Apical portion of first valvula. F. Second valvulae, lateral view. G. Apical portion of second valvulae. H. Second valvifer and gonoplac, lateral view. I. Apical portion of gonoplac. Scale bars in mm.

Fig. 25. Sculpturation of crown. A. Costanana flavina DeLong & Freytag, 1972, transverse striae. B. Metacostana cornuta gen. et sp. nov., transverse striae. C. Gypona costata (DeLong & Freytag, 1972) comb. nov., oblique striae. D. Gypona flavicosta Stål, 1862 comb. nov., oblique-rugose striae.