Rosalba morrisi 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 : 210-211

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

( Figs. 17–20 )

Description. Female. Integument black; mouthparts reddish brown; antennomeres III–V partially dark reddish brown; femora mostly dark brown, more reddish brown toward apex (mainly metafemora); tibiae dark reddish brown, darkened toward apex (metatibiae lighter); apex of abdominal ventrites I–IV with narrow, yellowish brown band.

Head. Frons finely, abundantly punctate; with pale yellow pubescence partially obscuring integument; with some long, erect, brown setae close to lower eye lobes. Area between antennal tubercles with sculpture and pubescence as on frons. Area between upper eye lobes with yellow pubescence obscuring integument except glabrous area along median longitudinal groove, connected to narrow band also with yellow pubescence behind and close to upper eye lobes; with some long, erect, dark brown setae close to eyes. Remaining surface of vertex and area behind upper eye lobes finely, moderately abundantly punctate on pubescent area, finer, sparser on glabrous area; on each side of median longitudinal groove with sub-reniform area with yellowish brown pubescence (not obscuring integument, surrounded by narrow band with pale yellow pubescence along median longitudinal groove and posterior margin (side of prothorax); area closer to prothorax glabrous; with some long, erect, dark brown setae close to upper eye lobes. Area behind lower eye lobes with yellow pubescence obscuring integument; with some long, erect, dark brown setae close to eye. Antennal tubercles minutely, abundantly punctate; with pubescence as on frons. Area between antennal socket and eyes with yellow pubescence obscuring integument. Submentum narrow, depressed close to gula, elevated toward mentum, with short, sparse, yellowish white setae on depressed area, with some long, erect, brown setae on elevated area. Postclypeus with pale yellow pubescence, partially obscuring integument on large central area, glabrous laterally; with long, sparse, brown setae directed forward on pubescent area. Labrum convex and coplanar with anteclypeus on basal half, inclined on distal half; with decumbent, yellowish pubescence (less conspicuous basally) interspersed with long, yellowish and brownish setae directed forward (mainly on inclined area). Distance between upper eye lobes 0.1 times length of scape; in frontal view, distance between lower eye lobes 0.6 times length of scape. Antennae 1.9 times elytral length, reaching elytral apex near apex of antennomere VIII; scape dorsally with some long, erect, brownish setae; ventral side of scape, pedicel and antennomeres III–X with long, erect, dark brown setae, gradually sparer toward antennomere X; antennal formula (ratio) based on antennomere III: scape = 1.08; pedicel = 0.27; IV = 1.19; V = 1.06; VI = 1.02; VII = 0.91; VIII = 0.87; IX = 0.83; X = 0.74; XI = 0.85.

Thorax. Prothorax as long as wide; sides slightly rounded centrally, without tubercle. Pronotum coarsely, moderately abundantly punctate, smooth close to basal and distal margins; with three longitudinal, wide bands of pale yellow pubescence obscuring integument (less so on central band); remaining surface with yellowish white pubescence distinctly not obscuring integument; with some long, erect, brown setae. Sides of prothorax with sculpture as on pronotum; with wide longitudinal band with pale yellow pubescence obscuring integument, placed at about middle; remaining surface with yellowish white pubescence (slightly more yellowish close to prosternum); with some long, erect, brown setae. Prosternum moderately coarsely, abundantly punctate; with yellowish white pubescence not obscuring integument. Prosternal process coarsely, abundantly punctate; with yellowish white pubescence not obscuring integument, distally more erect, interspersed with short, erect, brownish setae. Mesoventrite notably transversely depressed close to apex of prosternal process; with yellowish white pubescence, more conspicuous laterally. Mesanepisternum and mesepimeron with yellow pubescence obscuring integument. Metanepisternum with yellow pubescence obscuring integument, whitish, not obscuring integument on narrow area close to elytron. Metaventrite with band of dense yellow pubescence close to metanepisternum, and another wider, less dense close to area between inclined and flat regions; remaining surface with yellowish white pubescence not obscuring integument. Scutellum with pale yellow pubescence obscuring integument. Elytra. Coarsely, moderately abundantly punctate on basal 2/3 (slightly sparser from base to apex of this area), smoother, slightly conspicuous on distal third. With 4 longitudinal bands of pubescence, slightly surpassing middle, the 3 dorsal connected on base: outermost yellow, close to epipleura, narrowly, slightly surrounded by white pubescence; one dorsal, close to lateral curvature, slightly yellowish on base, white toward apex of basal quarter, then yellow centrally, surrounded by whitish pubescence (more whitish on its distal area); one yellow on center of dorsal surface, surrounded by white pubescence; another near suture, slightly yellow on base, white toward apex of basal fifth, then yellow surrounded by white pubescence. With band of pale yellow pubescence along basal fifth of suture, becoming white toward middle. With wide, oblique band with yellow pubescence placed after middle, connecting the 4 longitudinal bands of basal 2/3. With three narrow, longitudinal bands of yellow pubescence on distal third, fused at elytral apex: one close to epipleura, connected to oblique band; on near elytral curvature, not reaching oblique band; another close to suture, connected to oblique band, bifurcated after its middle (bifurcation not reaching oblique band). Remaining surface with yellowish brown pubescence no obscuring integument. Elytral apex slightly obliquely truncate, with short, distinct spine at outer angle. Legs. Femora with yellowish pubescence, not obscuring integument on pro- and mesofemora, obscuring on metafemora. Metatarsomere I as long as 0.7 times II–III together; metatarsomere V (without claws) as long as 1.1 times I–III together.

Abdomen. Ventrites with yellowish white pubescence partially obscuring integument, laterally forming a denser wide longitudinal band from base of I to apex o V; apex of ventrite V truncate.

Variation. Integument mostly dark brown; metafemora entirely reddish brown. Longitudinal yellow bands of basal 2/3 of elytra wider, not surrounded by white pubescence (closer each other).

Dimensions in mm (holotype female/ paratypes female). Total length, 7.85/6.15–7.05; prothorax: length, 1.55/1.05–1.35; anterior width, 1.45/1.05–1.30; posterior width, 1.50/1.05–1.35; widest prothoracic width, 1.55/ 1.10–1.40; humeral width, 2.10/1.50–1,85; elytral length, 5.60/4.40–5.05.

Type material. Holotype female from PANAMA, CΟlón: Fort Sherman area , 08.V.1999 , Morris & Wappes col. ( FSCA). Paratypes— 1 female, same data as holotype ( RFMC). PANAMA, CΟclé: Rio Indio Lodge (N El Valle ; 8°39’46.7”N / 80°7’7.9”W; 575 m) , 1 female, 24-27.II.2012, J. B. Heppner col. ( FSCA). COSTA RICA, Guanacaste: La Selva , 1 female, 10-12.I.1989 , F. T. Hovore col. ( CASC). Cartago: Turrialba ( CATIE; ca. 1400 ft) , 1 female, 25.V.1995, J. Riskind ( ACMT).

Etymology. This new species is named to recognize the collector of the holotype, Roy F. Morris II.

Remarks. RΟsalba mΟrrisi sp. nov. is similar to R. rufΟbasalis ( Breuning, 1940), but differs by the oblique, pale yellow pubescence band on elytra rather clearly defined and placed after the middle. In R. rufΟbasalis the pale yellow pubescence band is placed at the middle, is more transverse and vaguely defined.

Figures

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.