Rosalba mediovittata Galileo & Martins

Galileo, Maria Helena M. & Martins, Ubirajara R., 2013, Nine new species of the genus Rosalba (Coleptera, Cerambycidae, Lamiinae, Apomecynini) from South America, Zootaxa 3709 (3), pp. 285-295 : 286-288

Rosalba mediovittata Galileo & Martins , sp. nov.

( Fig. 1 )

Description. Head with dark brown integument. Frons covered with yellowish pubescence and coarsely punctate. Vertex with sparse yellowish pubescence. Upper ocular lobes with eight rows of ommatidia, distance between lobes equal to two rows of ommatidia. Antennae reddish brown, reaching elytral apices at apex of antennomere VIII. Scape with sparse yellowish pubescence. Antennomere III with fringe of hairs moderately dense on inner side.

Prothorax wider than long; without lateral tubercle. Pronotum with reddish brown integument and whitish pubescence interspersed with three longitudinal bands of yellowish-orange pubescence: one central from the base to almost the apex and one on each side of the base in the middle. Lateral parts of the prothorax with a yellowishorange band which begins next to the anterior margin and extend inferiorly, next to the procoxae and up to the lateral spots of the pronotum. Punctures abundant and close in the parts covered by a white pubescence. Pronotum with abundant punctures and dense in the parts covered by white pubescence. Scutellum covered by yellowishorange pubescence.

Elytra with dark brown integument covered by white pubescence and narrow bands of yellowish-orange pubescence: (1) transverse, on basal declivity, in each elytron; (2) sutural, longitudinal, from scutellum to anterior third; (3) longitudinal, between the suture and margin, from the anterior fifth to middle; (4) longitudinal, fine, near suture, from the anterior third to before the middle; (5) longitudinal, short, in the lateral declivity on the middle of the anterior third; (6) transverse, just after the middle, at the anterior border of the brown band, from near the suture to margin, where it is a little wider; (7) longitudinal, near the suture from the posterior third to the apex; (8) longitudinal, from the brownish band up to band 7; (9) longitudinal, on lateral declivity from the brownish band to the apex; (10) longitudinal, close to lateral margin from the brownish band to the apex. Brownish band, behind the middle, with curved anterior edge and irregular posterior edge. In the basal half, the elytra are punctate. Elytral apices obliquely truncate with outer spicule.

Femora, tibiae and tarsi brownish. Metatarsomere V as long as I–III together.

Ventral side dark-brown, covered by whitish pubescence, except meso- and metepisterna covered by yellowish-orange pubescence. Sides of the metasternum with coarse and moderately-dense punctures.

Measurements, in mm. Total length, 7.0; prothorax length, 1.2; prothorax width, 1.5; elytron length, 5.2; humeral width, 2.2.

Etymology. Latin, medius = middle; vitta = band; alluding the brown transverse band of the elytra.

Type-material. Holotype female, ECUADOR, Manabi: Montecristi (5 km S), 10.III.2006, F. T. Hovore & I. Swift col. (CASC).

Discussion. Rosalba mediovittata sp. nov. resembles R. recta ( Thomson, 1868) by the proximity of the upper ocular lobes and by the punctation of the pronotum; it is distinguished by the presence of a dark-brown transverse band of the elytra and by the yellowish-orange longitudinal bands. In R. recta , the middle of elytra do not have a brownish transverse band and the yellowish-orange longitudinal bands are continuous.

Figures

FIGURES 1 – 6. 1, Rosalba mediovittata Galileo & Martins, sp. nov., holotype female, total length, 7.0 mm; 2, Rosalba cacapyra Galileo & Martins, sp. nov., holotype female, total length, 7.1 mm; 3, Rosalba tanimbuca Galileo & Martins, sp. nov., holotype male, total length, 4.9 mm; 4. Rosalba malleri (Melzer, 1934), holotype, total length, 5.4 mm; 5, Rosalba parva Galileo & Martins, sp. nov., holotype female, total length, 4.5 mm; 6, Rosalba maculosa Galileo & Martins, sp. nov., holotype female, total length, 8.8 mm.