Urubaxia chewie Paladini & Carvalho

Paladini, Andressa, Barão, Kim Ribeiro & Carvalho, Gervásio Silva, 2016, Revision of Urubaxia Fennah (Hemiptera: Cercopidae: Ischnorhininae) with description of two new species, Zootaxa 4107 (2), pp. 285-292 : 290-291

Urubaxia chewie Paladini & Carvalho n.sp.

( Figures 23–33 )

Measurements. Total length, 12.90 ± 0.15 (12.08–13.58); length of pronotum, 3.91 ± 0.07 (3.44–4.15); length of tegmina, 10.02 ± 0.13 (9.66–10.70); width of tegmina, 3.21 ± 0.13 (2.38–3.64).

Diagnose. Head red, supra-antennal margin black; basal third of each tegmina reddish, median third translucent, apical margin brownish.

Description. Head red, supra-antennal margin black ( Figs 23–24 ); second and third segments of rostrum black; compound eyes black, rounded, arranged transversely; vertex smooth and rectangular, lacking median carina; ocelli black, closer to each other than to compound eyes; tylus smooth and rectangular, lacking median carina; antennae black, each pedicel sparsely setose, basal body of flagellum ovoid as long as wide, bearing one arista shorter than pedicel; postclypeus red, inflated, convex in profile, with one longitudinal carina slightly marked, lateral grooves strongly marked; rostrum extending to the base of mesocoxae. Thorax brownish-red; mesosternum black basally; pronotum reddish, posterior margin black, lacking median carina; anterior margin of pronotum straight, antero-lateral margins convex, postero-lateral margin slightly sinuous, posterior margin grooved; scutellum reddish with slight concavity centrally, lacking horizontal grooves; basal third of tegmina reddish, median third translucent, apical margin brownish; apical reticulation developed; hindwings hyaline with brownish venation, vein Cu1 thickened at base; legs red, tarsi black; metathoracic tibia with two lateral spines (basal spine smaller in size than spines in apical crown; apical spine larger than spines in apical crown); apical crown of spines on each tibia consisting of two rows; basitarsus with two rows of spines covered by setae; subungueal process present and triangular. Abdomen: black.

Male. Pygofer brownish, with a truncate process between anal tube and subgenital plates ( Fig. 25 ); subgenital plates long, wide at base and narrowing toward the apex, free for almost all its length ( Fig. 26 ), with a long and robust process covered with small spines and inserted on the inner margin medially ( Fig. 25 ); paramere slender, with a dorsal, short and sclerotized spine pointed upwards and a ventral, sclerotized spine pointed downwards ( Figs 27–28 ); aedeagus robust with a straight shaft, slightly enlarged at base and covered by small scale-like spines ( Figs 29–30 ).

Female. First valvulae of ovipositor long and slender, acute apically and with a basal, rounded and robust process directed downward ( Fig. 31 ); second valvulae long, with apical third of dorsal margin slightly serrate ( Fig. 32 ); third valvulae short and wide, with long ventral setae.

Distribution. Brazil (Minas Gerais, Rio de Janeiro) ( Fig. 33 ).

Remarks. This species is larger and more robust than the other species of Urubaxia . Some genitalic characters are unique, such as the dorsal process of the subgenital plate larger and covered with small scale-like spines, and the dorsal spine of paramere shorter and smaller than the spines of the other species. In dorsal view, the subgenital plates of U. chewie n.sp. are similar to the subgenital plates of U. solo n.sp.

Etymology. The chewie is a noun in apposition; the epithet is relative to the big size of this species compared to other Urubaxia species—for its appearance we name it in honor of the sci-fi character Chewbacca, dearly known as Chewie , from the Star Wars© saga.

Examined material. HOLOTYPE, ♂, BRAZIL: Minas Gerais: Itamonte, 13–15.xi.1998, D. Takiya coll. ( MNRJ). PARATYPES: BRAZIL: 2 ♂, same data as holotype ( MNRJ); Rio de Janeiro: Itatiaia, Agulhas Negras, 15.iii.1935, J.F. Zikán coll. (1 ♂, 2 ♀ DZUP); Itatiaia, 2350 m, i.1958, U. Barth coll. (1 ♀ MNRJ); Itatiaia, P.N. Itatiaia, 2400 m, 5.ii.1959, Barth coll. (1 ♂, 1 ♀ MNRJ).

Figures

FIGURE 33. Distribution of species of Urubaxia.

FIGURES 23 – 32. Urubaxia chewie n. sp. 23. Habitus, dorsal view; 24. Habitus, lateral view; 25. Male pygofer, lateral view; 26. Subgenital plates, ventral view; 27. Paramere, lateral view; 28. Paramere, dorsal view; 29. Aedeagus, lateral view; 30. Aedeagus, dorsal view; 31. Ovipositor, first valvulae, lateral view; 32. Ovipositor, second valvulae, lateral view.