Vilga (Laevivilga) brasiliensis Dolling, 1977

Costa, Wanessa Da Silva & Barcellos, Aline, 2017, Contributions to the taxonomy of Vilga Stål (Hemiptera, Coreidae, Pseudophloeinae) with the description of a new species from southern Brazil, Zootaxa 4353 (1) : -

Vilga (Laevivilga) brasiliensis Dolling

( Figs. 8–14 )

Vilga (Laevivilga) brasiliensis: Dolling, 1977: 39 ; Packauskas, 2010: 224.

Holotype female, Brazil, Mato Grosso, 12º 50’ S, 51º 45’ W, Cerradao, 15.ii – 8.iii.1968 (B. E. Freeman) National Museum of Rio de Janeiro ( MNRJ) (examined by photograph).

Material examined. Brazil, Rio Grande do Sul, [Caxias do Sul], Vila Oliva, 18.i.1961, ♂ ( MAPA without number).

Diagnosis. Body surface, especially of corium, densely pubescent, except on maculae; all setae of same length. Humeri projected laterad. Ejaculatory reservoir complex with thickenings. Vesica longer than phallotheca.

Description. Male. Color pattern ( Figs. 8−9 ). General color castaneous to reddish castaneous. Darker areas on ventral surface of head, in the middle of urosternites III and IV, laterally on urosternites IV and V, and sublaterally from urosternites V–VII. All femora reddish castaneous. Corium with piceous apical spot near M and R veins. Connexivum segments with blackish transverse stripes along anterior and posterior margins. Scutellum with longitudinal yellowish stripe along middle. Urosternites with darker areas: mesially on segments III–IV, two sublateral stripes on V–VII, and along lateral margins, variable in extent, on III–V.

Head. Dorsal surface with small tubercles, as described for V. (L.) antennata sp. nov. Antennal segment II with less than half the width of segment I. Mandibular plates and tylus equal in length, surpassing antennifers. Bucculae granular, with at least half length of first rostral segment. Ventral surface of head longitudinally sulcate. Remaining characters as described by Dolling (1977).

Thorax. Pronotum, scutellum and especially corium, densely pubescent, except on maculae; posterior margin of pronotum convex. Pleura punctate. All thoracic sterna sulcate. Ostiole, in ventral view, located innerly to imaginary longitudinal line along outer margin of metacoxae. Ventral tubercles of anterior and median femora ( Dolling 1977) distributed in rows of three or four pairs. Remaining characters as described by Dolling (1977).

Abdomen. Urotergites II–VI with punctations irregularly distributed. Tergo-connexival suture ( Rueda 1992) on urotergites II–VI. Urosternite III with two sublateral depressions areas. Remaining characters as described by Dolling (1977).

Male genitalia ( Figs. 10–14 ). Pygophore subquadrangular ( Figs. 11 ). Posterolateral angles truncate ( Figs. 11– 12 ). Ventral rim, in posterior view, slightly convex in middle ( Fig. 10 ). Apex of paramere rounded ( Fig. 14 ), its surface bearing small tubercles; spine of paramere about half as wide as paramere at the same level. Ejaculatory reservoir complex with two laterodistal thickenings ( Fig. 13 ). Vesica longer than phallotheca ( Fig. 13 ).

Male measurements (mm). Total length 8.2; head length 1.5, width 1.6; interocular distance 0.93; interocellar distance 0.23; anteocular length 1.0; antennal segments I—1.07, II—0.08, III—1.33, IV—1.23; rostral segments: I—1.0, II—0.9, III—0.4, IV—0.4; pronotum length 1.66, width 2.93; scutellum length 1.0, width 1.0.

Distribution. BRAZIL: Mato Grosso (12° 50’S, 51° 45’W, Cerrado); Rio Grande do Sul (new Brazilian record), [Caxias do Sul], Vila Oliva.

Figures

FIGURES 8–9. Vilga (Laevivilga) brasiliensis Dolling, dorsal and lateral view, respectively.Scale bar:1.0 mm.

FIGURES 10–14. Male genitalia of Vilga (Laevivilga) brasiliensis Dolling: 10–12, pygophore, respectively posterior, dorsal and lateral view; 13, aedeagus (ventral); 14, paramere (inner view) (ej, ejaculatory reservoir; sp, spine; pa, paramere; tej, thickening of ejaculatory reservoir complex; ve, vesica; vr, ventral rim). Scale bars:10–13, 0.5 mm; 14, 0.25 mm.