Rosalba schneppi Santos-Silva & Galileo, 2018

Santos-Silva, Antonio, Galileo, Maria Helena M., Joly, Luis J. & Tavakilian, Gérard L., 2018, The genus Rosalba Thomson, 1864 (Coleoptera, Cerambycidae, Lamiinae, Apomecynini), Zootaxa 4387 (2), pp. 201-258 : 227-228

Rosalba schneppi Santos-Silva & Galileo , sp. nov.

( Figs 113–116 )

Description. Female. Integument mostly black; mouthparts yellowish brown; labrum gradually yellowish brown toward apex; antennomeres gradually dark brown toward distal segments.

Head. Frons smooth except for some fine punctures near clypeus and lower eye lobes; pubescence yellow partially obscuring integument except narrow band close to lower eye lobes with pubescence distinctly denser and interspersed with long, erect dark setae. Area between antennal tubercles smooth, with yellow pubescence partially obscuring integument. Area between upper eye lobes with narrow band with yellow pubescence obscuring integument, connected to narrow band of same color behind eyes. Remaining surface of vertex and area behind upper eye lobes with pale yellow pubescence exposing integument, slightly yellower and denser centrally close to prothoracic margin.Area behind lower eye lobes tumid close to eye; with yellow pubescence partially obscuring integument (except on glabrous, irregular area on tumid region), gradually glabrous toward gula on area close to prothorax.Genae with pale yellow pubescence partially obscuring integument on wide area close to eye, glabrous close to apex; with long, erect, sparse dark setae. Antennal tubercle with yellow pubescence partially obscuring integument, interspersed with some long, erect dark setae on base. Submentum narrow, slightly depressed close to gula, elevated toward mentum, with short, sparse yellowish setae on depressed area. Postclypeus with pale yellow pubescence not obscuring integument on large central area, glabrous laterally; with some long, erect dark setae. Labrum convex and coplanar with anteclypeus on basal third, gradually inclined on distal 2/3; with fine, sparse punctures on inclined area; nearly glabrous on basal third, with minute, sparse setae on inclined area interspersed with long, erect, thick, dark setae. Upper eye lobes contiguous; in frontal view, distance between lower eye lobes 0.5 times length of scape. Antennae 2.3 times elytral length, reaching elytral apex at apex of antennomere VII; scape dorsally with some long, erect dark setae, ventrally with long, erect dark setae on distal half; pedicel and antennomeres III–X with long, erect, dark brown setae, gradually sparer and shorter toward antennomere X; antennal formula (ratio) based on antennomere III: scape = 1.06; pedicel = 0.17; IV = 1.35; V = 1.34; VI = 1.29; VII = 1.20; VIII = 1.15; IX = 1.13; X = 1.12; XI = 1.20.

Thorax. Prothorax slightly wider than long; sides with small conical tubercle at about middle. Pronotum coarsely, moderately abundantly punctate, smooth close to basal and distal margins; with three longitudinal bands of yellow pubescence obscuring integument (central band narrowest); remaining surface with yellow pubescence distinctly exposing integument; with some long, erect dark setae. Sides of prothorax with sculpture as on pronotum; with wide, longitudinal, irregular band with yellow pubescence obscuring integument, placed at about middle; remaining surface with yellow pubescence distinctly exposing integument. Prosternum smooth; with yellow pubescence distinctly exposing integument. Prosternal process smooth on basal third, coarsely, abundantly punctate toward on distal 2/3; with yellow pubescence, not obscuring integument, interspersed with long, erect dark setae (primarily on distal half). Mesoventrite notably transversely depressed close to apex of prosternal process; with yellowish pubescence, more conspicuous laterally. Mesanepisternum with band of dense yellow pubescence on its superior region, with yellowish pubescence exposing integument on remaining surface. Mesepimeron with dense yellow pubescence. Metanepisternum with yellowish white pubescence not obscuring integument (slightly yellower and denser on base). Metaventrite with band of dense yellow pubescence close to metanepisternum, with yellow pubescence partially obscuring integument on dorsal surface, and are with sparse, yellow pubescence between lateral band and dorsal area. Scutellum with yellow pubescence obscuring integument. Elytra. Coarsely, moderately abundantly punctate on basal third, gradually finer, sparser toward middle, nearly smooth on distal half. With wide, oblique band of yellow pubescence, from epipleura to suture, placed after middle, and 4 longitudinal bands of yellow pubescence, starting at base, one close to suture, reaching oblique band, two between the former and humerus (outermost distinctly narrowed toward apex and reaching oblique band), another laterally close to epipleura, narrowed toward apex and reaching oblique band; with longitudinal, narrow band of yellow pubescence on distal third, starting on oblique band close to suture (partially lost in the two specimens examined), distinctly triangularly widened on distal sixth; with narrow band of yellow pubescence on distal third, from oblique band to base of triangular band close to suture (partially lost in the holotype); with narrow band of yellow pubescence from oblique band to apex (partially lost in the holotype); with narrow band of yellow pubescence close to epipleura, from oblique band to apex (partially lost in the holotype); area between basal longitudinal bands of yellow pubescence and area close to suture on basal half with yellowish white pubescence; remaining surface with yellow pubescence distinctly exposing integument; elytral apex slightly oblique, with short, distinct spine at outer angle. Legs. Femora with yellowish white pubescence (more yellower dorsally) not obscuring integument. Metatarsomere I as long as 0.8 times II–III together; metatarsomere V (without claws) as long as 1.4 times I–III together.

Abdomen. Ventrites with yellow pubescence partially obscuring integument, slightly denser laterally; ventrite V with sparse, long, erect dark setae and truncate apex.

Variation. Pubescence on frons obscuring integument, except on glabrous narrow band along median longitudinal groove, but denser close to lower eye lobes; vertex and area behind upper eye lobes glabrous on narrow longitudinal band (gradually widened toward prothorax), with transverse, subelliptical macula with pale yellow pubescence exposing integument, surrounded with dense yellow pubescence; pubescence on postclypeus partially obscuring integument and dark erect setae slightly more abundant; elytral band of yellow pubescence on distal third, from oblique band to base of triangular band close to suture entirely lost; elytral apex truncate.

Dimensions in mm (holotype female– paratype female). Total length, 10.40–9.60; prothorax: length, 2.00– 1.80; anterior width, 1.90–1.80; posterior width, 2.00–1.90; widest prothoracic width, 2.05–1.95; humeral width, 2.85–2.55; elytral length, 7.25–6.70.

Type material. Holotype female from PANAMA, Panama: 10-13 km N El Llano (± 1800’), 03-05.VI.1982, E. Giesbert col. ( FSCA). Paratype—PANAMA, Panama: Barro Colorado Island (09°09’N / 79°51’W), 1 female, 27.XI.1996, Pickering & Windsor col. ( MZSP); 1 specimen, unknown sex, 20-27.XI.1996, J. Pickering col. ( ACMT).

Etymology. This species is named for Kyle E. Schnepp, for his help with the specimens of RΟsalba deposited at FSCA.

Remarks. RΟsalba schneppi sp. nov. is similar to R. mΟrrisi sp. nov., but differs by the antennae finer and distinctly longer ( Fig. 113 ), mesanepisternum with dense yellow pubescence only on its superior region ( Fig. 115 ), and metanepisternum not covered with yellow pubescence ( Fig. 115 ). In R. mΟrrisi, the antennae are thicker and shorter ( Fig. 18 ), mesanepisternum and metanepisternum covered with dense yellow pubescence ( Fig. 20 ).

Figures

FIGURES113–120.113–116, R.schneppi, paratype female:113, dorsal habitus.114, ventral habitus; 115, lateral habitus; 116, head, frontal view.117–120, R.similis, holotype female:117, head, frontal view; 118, dorsal habitus; 119, ventral habitus; 120, lateral habitus.

FIGURES 15–20. 15–16, Rosalba senecauxi sp. nov., paratype male: 15, ventral habitus; 16, lateral habitus. 17–20, Rosalba morrisi sp. nov., holotype female:17, head, frontalview; 18, dorsal habitus; 19, ventral habitus; 20, lateral habitus.