Rosalba lingafelteri 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 : 211-213

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

( Figs. 21–24 )

Description. Male. Integument dark brown, blackish on some areas, mainly on head and pronotum; apex of last palpomeres dark reddish brown.

Head. Frons finely, abundantly punctate; with yellowish white pubescence partially obscuring integument, mainly laterally, except narrow glabrous band along median longitudinal groove; with some long, erect, brown setae close to eyes. Area between antennal tubercles with sculpture as on frons; with pale yellow pubescence partially obscuring integument. Area between upper eye lobes with yellow pubescence obscuring integument, connected to narrow band also with yellow pubescence behind and close to upper eye lobes. Remaining surface of vertex and tempora finely, abundantly punctate; with yellow pubescence partially obscuring integument, except sub-elliptical area on each side of median longitudinal groove with pubescence distinctly not obscuring integument. Antennal tubercles finely, moderately abundantly punctate; with yellowish white pubescence, gradually more pale yellow toward apex. Area between antennal socket and eyes with yellow pubescence obscuring integument. Submentum narrow, depressed close to gula, elevated toward mentum; with short, decumbent, moderately sparse, yellowish white setae on depressed area, with some long, erect, dark brown setae on elevate area. Postclypeus finely, abundantly punctate on large central area, smooth laterally; with yellowish white pubescence on punctate area, partially obscuring integument, glabrous on smooth area; with long, sparse, dark brown setae directed forward on punctate area. Labrum convex and coplanar with anteclypeus on basal 2/3, inclined on distal third; finely, abundantly punctate close to anteclypeus, smooth on remaining coplanar area; with short, sub-erect, yellowish setae and long, yellowish and dark brown setae on punctate coplanar area, glabrous on smooth coplanar area, with short, moderately abundant yellowish setae on inclined area (denser on margin). Distance between upper eye lobes 0.1 times length of scape; in frontal view, distance between lower eye lobes 0.7 times length of scape. Antennae 1.75 times elytral length, reaching elytral apex at basal quarter of antennomere IX; segments with sparse, decumbent, yellowish pubescence, dorsally interspersed with short, erect, sparse, yellowish setae; ventral side of scape, pedicel and antennomeres III–X with long, erect, dark brown setae, gradually sparser toward antennomere X; antennal formula (ratio) based on antennomere III: scape = 1.00; pedicel = 0.23; IV = 1.09; V = 1.00; VI = 0.91; VII = 0.91; VIII = 0.82; IX = 0.76; X = 0.67; XI = 0.79.

Thorax. Prothorax slightly wider than long (1.15 times); sides almost parallel-sided. Pronotum coarsely, densely punctate; with three longitudinal, wide bands of yellow pubescence obscuring integument; area between longitudinal yellow bands with minute, slightly conspicuous brownish pubescence. Sides of prothorax with sculpture as on pronotum; with wide longitudinal band of yellow pubescence obscuring integument, occupying nearly all inferior side, distally connected to lateral longitudinal band on pronotum by narrow transverse band; remaining surface with yellowish pubescence not obscuring integument; with long, erect, sparse, dark brown setae. Prosternum moderately finely, abundantly punctate; with yellowish pubescence not obscuring integument. Prosternal process moderately coarsely, abundantly punctate; with sub-erect yellowish setae partially obscuring integument. Mesoventrite notably transversely depressed close to apex of prosternal process; with yellowish white slightly conspicuous pubescence on depressed area; with yellow pubescence obscuring integument laterally. Mesanepisternum and mesepimeron with yellow pubescence obscuring integument, more yellowish white on superior side close to mesoventrite. Metanepisternum with yellow pubescence obscuring integument on basal quarter, distinctly sparser on remaining surface. Metaventrite finely, moderately abundantly punctate laterally, gradually sparser toward center; large central area slightly convex; with wide band of yellow pubescence covering entire lateral inclined area, with yellowish white pubescence on remaining surface. Scutellum with dense yellow pubescence except narrow, glabrous central area on basal half. Elytra. Coarsely, densely punctate on basal half, gradually finer, sparser toward apex (notably on distal quarter). With 4 longitudinal bands of pubescence distinctly surpassing middle, basally connected between them, distally connected (or almost so) with oblique band: outermost yellow, close to epipleura, from base to about apex of basal 2/3, superiorly margined with sparse whitish pubescence; moderately narrow band of yellow pubescence close to elytral curvature, gradually white toward its apex after basal third, surrounded with white pubescence on sides of yellow area; band of yellow pubescence on center of discal area, gradually white near its apex, surrounded by white pubescence; wide band of white pubescence close to suture, variegated with yellow pubescence, mainly on basal third close to suture and center of its distal quarter. With slightly oblique band of dense yellow pubescence on base of distal third (more irregular on its inferior side) from lateral margin to near suture. Distal fifth entirely with yellow pubescence obscuring integument, with narrow projections toward oblique band. Remaining surface with yellowish brown pubescence, distinctly exposing integument. Elytral apex obliquely truncate, making the outer angle projected. Legs. Femora with yellow pubescence not obscuring integument. Metatarsomere I as long as 0.7 times II–III together; metatarsomere V (without claws) as long as 0.9 times I–III together.

Abdomen. Ventrites finely, sparsely punctate (slightly coarser, more abundant on ventrite I); with yellow pubescence, denser on sides of I–III and entire IV–V, distinctly sparser on moderately narrow area close to sides of I–III; apex of ventrite V slightly rounded.

Variation. Metaventrite coarsely, moderately abundantly punctate laterally; oblique elytral band interrupted near lateral curvature.

Dimensions in mm (holotype male/ paratype male/ paratype females). Total length, 5.75/6.00/5.30–5.80; prothorax: length, 1.00/1.05/0.95–1.00; anterior width, 1.05/1.10/1.00–1.10; posterior width, 1.10/1.10/1.05–1.10; widest prothoracic width, 1.15/1.15/1.15–1.20; humeral width, 1.60/1.65/1.50–1.70; elytral length, 4.15/4.40/3.80– 4.45.

Type material. Holotype male from BOLIVIA, Santa Cruz: Buena Vista , 3–5.X.1992, E. Giesbert col. ( FSCA) . Paratypes—BOLIVIA, Santa Cruz: 4 km N Bermejo ( Refugio Los Volcanes ; 1045–1350 m; 18°06’S / 63°36’W), 1 female, 11-17.XII.2012, Wappes & Skillman col. ( SWLC) ; 1 male, 17-24.X.2014, Wappes & Morris col. (ACMT); (3363’), 1 female, 18–24.X.2014, Morris & Wappes col. (RFMC); Flora & Fauna Hotel ( Buena Vista ), 1 female, 21–25.XI.2003, Morris, Nearns & Wappes col. ( MZSP) .

Etymology. This new species is named for Steven Wayne Lingafelter, in recognition of his many contributions to the knowledge and systematics of New World Cerambycidae .

Remarks. RΟsalba lingafelteri sp. nov. is similar to R. fimbriata ( Belon, 1903) , but differs mainly as follows: oblique band on elytra distinct (even when interrupted laterally), and placed on distal third; distal area of elytra entirely covered with yellow pubescence. In R. fimbriata there is no distinct oblique band, and what is thereis placed at about middle, mainly laterally, and the distal third of elytra has longitudinal bands of yellow pubescence. RΟsalba lingafelteri differs from R. recta ( Thomson, 1868) by the uniformly colored antennomeres (darkened on apex in R. recta ), by the laterally unarmed prothorax (slightly armed in R. recta ), and by the transverse elytral band starting on distal third (starting on distal quarter in R. recta ).

Figures

FIGURES 21–27. 21–24, Rosalba lingafelteri sp. nov., holotype male: 21, dorsal habitus; 22, lateral habitus; 23, head, frontal view; 24, ventral habitus.25–27, Rosalba clinei sp. nov., holotypefemale:25, head, frontal view; 26, dorsal habitus; 27, lateral habitus.