Rosalba bezarki 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 : 220-221

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

( Figs 109–112 )

Description. Female. Integument mostly dark brown, almost black on some areas; mouthparts reddish-brown; antennae dark reddish-brown; gula reddish-brown; coxae and basal third of metatibiae dark reddish-brown.

Head. Frons finely, moderately abundantly punctate; with yellow pubescence nearly obscuring integument except glabrous, narrow center-longitudinal area; with some long, erect, dark setae close to eyes. Area between antennal tubercles slightly depressed, with sculpture and pubescence as on frons. Remaining surface of vertex with sculpture and pubescence as on frons. Median longitudinal groove distinct from clypeus to prothoracic margin. Antennal tubercles densely, minutely punctate; with yellow pubescence partially obscuring integument. Area behind lower eye lobes tumid close to eyes; with fringe of yellow pubescence on tumid area, sparser on remaining surface. Area between antennal socket and eyes with narrow band with yellow pubescence. Submentum with minute, somewhat sparse yellowish white setae. Postclypeus with sculpture and pubescence as on frons on wide central region, smooth, glabrous laterally; with long, erect, dark, thick setae directed forward on punctate region. Labrum convex and coplanar with anteclypeus on basal 2/3, inclined on distal third; with long, suberect yellow and dark setae on coplanar area; with fringe of golden setae on distal margin. 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 1.7 times elytral length, reaching elytral apex at distal quarter of antennomere VIII; scape with long, erect, dark setae, distinctly sparser dorsally; pedicel and antennomeres III–X with long, erect, dark setae ventrally (sparser toward X); antennal formula (ratio) based on antennomere III: scape = 0.95; pedicel = 0.29; IV = 1.29; V = 1.09; VI = 1.06; VII = 0.93; VIII = 0.84; IX = 0.80; X = 0.74; XI = 0.80.

Thorax. Prothorax 1.15 times wider than long; sides unarmed, slightly widened at about midlength. Pronotum coarsely, abundantly punctate; with yellow pubescence partially obscuring integument except laterally and subreniform central area on each side of center with sparse yellowish white pubescence, and white, moderately sparse pubescence on each side of center on basal half; with some long, erect dark setae. Sides of prothorax with sculpture as on pronotum; with small spot with yellow pubescence on center, and band with yellow pubescence close to anterior margin, fused with pubescence of pronotum and narrowed toward ventral side. Prosternum with yellowish white pubescence not obscuring integument, slightly denser laterally. Prosternal process with yellow pubescence, gradually denser toward apex. Mesoventrite with yellowish white pubescence not obscuring integument, denser laterally. Mesanepisternum coarsely, sparsely punctate; with yellowish white pubescence not obscuring integument. Mesepimero with yellowish white pubescence exposing integument on half close to elytron, with yellow pubescence obscuring integument on remaining surface. Metanepisternum and sides of metaventrite with yellow pubescence obscuring integument; remaining surface with yellowish white pubescence obscuring integument close to yellow area, gradually exposing toward central region. Scutellum with yellow pubescence obscuring integument. Elytra. Coarsely, abundantly punctate on basal half, gradually finer, sparser toward apex. Pubescence as follows: transverse, narrow band with yellow pubescence partially exposing integument on each side of scutellum; transverse, moderately wide band with yellow pubescence at about midlength, from lateral margin to near suture; three longitudinal band with yellow pubescence, from apex of basal 1/10 to transverse band, two dorsally, one laterally close to epipleura (innermost partially interrupted close to transverse band); longitudinal band with yellow pubescence from basal 1/10 to apex, fused with transverse band on midlength, fused to another longitudinal band on distal third (this later not reaching transverse band); longitudinal band with yellow pubescence on distal third, close to curvature, not reaching transverse band; longitudinal band with yellow pubescence close to epipleura, from transverse band to apex; narrow band with yellow and white pubescence close to suture, from scutellum to near apex (gradually sparser toward apex); area between longitudinal bands on basal half with white pubescence partially obscuring integument; remaining surface with yellowish brown pubescence distinctly exposing integument. Apex slightly obliquely truncate, with outer angle forming distinct triangular lobe. Legs. Femora with yellow pubescence not obscuring integument, gradually denser from profemora to metafemora. Metatarsomere I as long as 0.75 times II–III together; metatarsomere V (without claws) as long as I–III together.

Abdomen. Ventrites with yellow pubescence partially obscuring integument; center distal area of ventrite V slightly depressed; apex of ventrite V truncate.

Dimensions in mm (holotype female). Total length, 5.90; prothorax: length, 1.00; anterior width, 0.95; posterior width, 1.05; widest prothoracic width, 1.10; humeral width, 1.60; elytral length, 4.30.

Type material. Holotype female from ECUADOR, NapΟ: Napo-Galeras Road (Km 1), 25.VIII.2004, F. T. Hovore col. ( CASC).

Etymology. This species is named for our friend Larry G. Bezark, who sent specimens for study.

Remarks. RΟsalba bezarki sp. nov. resembles R.pulchella ( Belon, 1903) and R. genieri Audureau, 2016 by the pronotal and elytral drawing, but differs from both as follows: eyes coarsely faceted; distance between upper eye lobes shorter than width of one lobe; scape and antennomeres thicker; transverse band with yellow pubescence on elytra starting slightly before midlength. In R. pulchella ( Fig. 73 ) and R. genieri , the eyes are more finely faceted, distance between upper eye lobes equal to width of one lobe, scape and antennomeres slender, and transverse band with yellow pubescence on elytra starting slightly after midlength. It differs from R. apprΟximata ( Fig. 52 ) by the pubescence on pronotum not forming distinct bands (forming in R. apprΟximata), and base of elytra without longitudinal bands of pubescence (present in R. apprΟximata).

Figures

FIGURES 105–112. 105–108, R. similis, paratype male: 105, dorsal habitus; 106, ventral habitus; 107, lateral habitus; 108, head, frontalview.109–112, R.bezarki, holotype female;109, head, frontalview; 110, dorsal habitus; 111, ventral habitus; 112, lateral habitus.

FIGURES 64–76. Dorsal habitus: 64, Rosalba gounellei, holotype; 65, R. incrustabilis, paratype; 66, R. indistincta, holotype; 67, R. jolyi, holotype; 68, R. inscripta, syntype; 69, R. maculosa, holotype; 70, R. malleri, holotype; 71, R. mediofasciata, holotype; 72, R. obliqua, syntype; 73, R. pulchella, holotype; 74, R. parva, holotype; 75, R. peraffinis, holotype; 76, R. mediovittata, holotype.Figures 66, 71, 72 and 75 by Jesus Santiago Moure; 73 by Gérard L.Tavakilian (MNHN).

FIGURES 49–63. Dorsal habitus: 49, Rosalba alboapicalis, holotype; 50, R. alcidionoides, holotype; 51, R. amazonica, holotype; 52, R. approximata, holotype; 53, R. arawakiana, holotype; 54, R. bucki, holotype; 55, R. cacapyra, holotype; 56, R. consobrina, holotype; 57, R. costaricensis, holotype; 58, R. crassepunctata, holotype; 59, R. digna, holotype; 60, R. dissimilis, syntype; 61, R. fimbriata, syntype; 62, R. formosa, holotype; 63, R. hovorei, holotype. Figures 49 and 58 by Jesus Santiago Moure; 53 and 63, from original description; 50, 60 and 61by Gérard L. Tavakilian (MNHN); 57 by Steven W.Lingafelter.