Euryestola transversa Bezark and Santos-Silva, 2023

Bezark, Larry G. & Santos-Silva, Antonio, 2023, New species, synonymies and transfers in Neotropical Lamiinae (Coleoptera: Cerambycidae), Insecta Mundi 2023 (993), pp. 1-26 : 16-19

Euryestola transversa Bezark and Santos-Silva , new species

( Fig. 35–39 )

Description. Holotype female. Integument mostly dark brown; ventral mouthparts yellowish-brown, except apex of maxillary palpomere IV and labial palpomere III; anteclypeus testaceous close to postclypeus, brown close to labrum; labrum brown close to anteclypeus, light yellowish brown anteriorly; scape light brown on basal third, dark brown on remaining surface; pedicel brown; antennomere III orangish brown on basal third, reddish brown centrally, dark brown on apical third; antennomere IV orangish brown on basal 2/3, dark brown on apical third; antennomere V dark reddish brown basally, dark brown on remaining surface; antennomere VI light orangish brown on basal half, dark brown on apical half; antennomeres VII and IX dark brown; antennomere VIII and X light orangish brown; antennomere XI brown on basal 3/4, yellowish on apical quarter. Elytra with wide, transverse reddish-brown band on dorsal surface of anterior third and mostly light brown on posterior third. Protibiae brown, lighter on apical third; metatibiae dark orangish brown on posterior third. Pro- and mesotarsomere I reddish brown; pro- and mesotarsomere II brown; pro- and mesotarsomere III brown except orangish brown apex of lobes; pro- and mesotarsomere IV brown; pro- and mesotarsomere V and claws dark yellowish brown; metatarsus mostly yellowish brown. Abdominal ventrites 1–4 narrowly dark yellowish brown apically.

Head. Frons somewhat abundantly, coarsely punctate; with moderately abundant, thick, decumbent yellowish-brown setae not obscuring integument, setae denser, longer, more pale yellow close to eyes, longer toward vertex, shorter, sparser toward clypeus; with thick, whitish setae interspersed; with one long, erect dark-brown seta close to each eye. Area between antennal tubercles and upper eye lobes with sculpturing as on frons; with somewhat abundant, bristly, thick setae, both yellowish-brown and brownish setae laterally, and mostly whitish centrally; area between eyes with thick pale-yellow setae close to eyes, brownish centrally, except glabrous central area; remaining surface of vertex with moderately sparse yellowish-white setae, except glabrous central area. Area behind upper eye lobes sparsely, coarsely, punctate; with abundant, thick, decumbent pale-yellow setae close to eye, and a few thick yellowish-white setae close to prothorax. Area behind lower eye lobes moderately abundantly, coarsely punctate, except smooth area close to prothorax, area between punctures minutely rugose; with somewhat sparse, decumbent, thick yellowish-white setae on punctate area, glabrous close to prothorax. Genae transversely rugose posteriorly and finely punctate frontally, except smooth apex; with somewhat abundant, thick, decumbent pale-yellow setae frontally and yellowish-white setae posteriorly, except glabrous area close to eyes. Antennal tubercles with dense pale-yellow pubescence posteriorly, apical area of frontal region and area close to eyes, with sparse, mostly brownish pubescence on remaining surface. Gulamentum smooth, glabrous, except intermaxillary process with whitish pubescence. Wide central area of postclypeus with sparse, short yellowish-brown setae close to frons, except central area with sparse white setae, and somewhat abundant, long, both yellowish and brownish setae directed forward on sides close to anteclypeus. Sides of postclypeus with short, decumbent, thick pale-yellow setae except glabrous apex. Labrum with somewhat abundant, both long and short yellowish setae on dark area, glabrous on light area, except fringe of yellowish-brown setae on anterior margin. Distance between upper eye lobes 0.24 times distance between outer margins of eyes; in frontal view, distance between lower eye lobes 0.55 times distance between outer margins of eyes. Antennae 1.3 times elytral length, reaching elytral apex at apex of antennomere XI. Scape with somewhat abundant, thick yellowish-white pubescence on basal third of dorsal and lateral surfaces; with thick yellowish-white pubescence on entire apex, yellower dorsally; remaining dorsal and lateral surfaces with thick dull yellowish-brown pubescence not obscuring integument, with a few decumbent, thick white setae interspersed; ventral surface with thick yellowish-white pubescence, denser on basal half. Pedicel with somewhat abundant pubescence not obscuring integument, pubescence thicker and whitish on basal third, slender and dull yellowish brown on remaining surface; ventral surface with a few erect, moderately long brownish setae. Light area of antennomeres III–XI with abundant white pubescence partially obscuring integument, and dark area with abundant brownish pubescence partially obscuring integument; ventral surface of antennomeres III–X with a few long, erect brownish setae (only one seta on V–X); antennomeres III–X with a few short, erect white setae interspersed; antennomere XI with somewhat abundant, short, erect, both white and yellowish-white setae interspersed. Antennal formula based on length of antennomere III: scape = 0.70; pedicel = 0.22; IV = 0.70; V = 0.37; VI = 0.32; VII = 0.32; VIII = 0.30; IX = 0.35; X = 0.30; XI = 0.37.

Thorax. Prothorax wider than long; sides with rounded protuberance just after middle. Pronotum densely, coarsely punctate; sides with dull yellowish pubescence, this area widened on anterior third, distinctly narrowed centrally, then moderately narrow to posterolateral angles; sides of area close to posterior margin with dull yellowish pubescent band, widened, slightly lighter on its inner region; center of anterior fifth with dense pale-yellow pubescent macula; center of posterior region with dense yellowish-white pubescent macula, not reaching posterior fifth; with wide, moderately dense white pubescent band on sides of posterior half, starting on inner apex of pubescent band close to posterior margin; remaining surface with somewhat abundant brownish pubescence not obscuring integument, with short, thick, decumbent white setae interspersed, especially on anterior half, and a few thick, decumbent yellow setae interspersed centrally close to anterior margin. Sides of prothorax abundantly, coarsely punctate; with somewhat abundant yellowish-white pubescence not obscuring integument, pubescence slightly yellower close to pronotum. Prosternum sparsely, coarsely punctate; with somewhat abundant yellowish-white pubescence not obscuring integument laterally, pubescence sparser and white centrally. Prosternal process sparsely, coarsely punctate, punctures slightly denser apically; with sparse yellowish-white pubescence; narrowest area 0.2 times procoxal width. Mesoventrite somewhat abundantly, coarsely punctate, punctures coarser than on prosternum; with sparse yellowish-white pubescence, except sides with dense yellowish pubescence. Mesanepisternum and mesepimeron with sculpturing as on mesoventrite; with abundant yellowish-white pubescence not obscuring integument, pubescence slightly more abundant close to elytra and prothorax. Metanepisternum abundantly, coarsely punctate; with abundant yellowish-white pubescence not obscuring integument. Metaventrite abundantly, coarsely punctate; with somewhat abundant yellowish-white pubescence not obscuring integument. Scutellum with abundant yellowish-brown pubescence, except glabrous anterocentral region. Elytra. Abundantly, coarsely punctate; with abundant, both thick and slender brownish pubescence not obscuring integument; with abundant, irregular white pubescent spots interspersed, spots more abundant, almost forming transverse white pubescent band on anterior third; with sparse, thick, decumbent pale-yellow setae interspersed throughout. Legs. Femora with abundant yellowish-white pubescence not obscuring integument, slightly denser on ventral surface of peduncle, partially absent on ventral surface of femoral club, except sides of meso- and metafemora with sparse brownish pubescence with thick, decumbent yellowish setae interspersed. Tibiae with sparse yellowish-brown pubescence not obscuring integument, and somewhat abundant, thick, both white and yellowish-white setae interspersed dorsally and laterally and abundant white pubescence interspersed ventrally, except: Apical 3/4of ventral surface of protibiae, ventral apical half of mesotibiae, and dorsal apical third of mesotibiae with dense, bristly yellowish-brown pubescence and thick dark setae of same color interspersed; sides of apical third of mesotibiae with sparse yellowish-brown pubescence; and ventral apical third of metatibia with moderately abundant, bristly yellowish-brown pubescence. Dorsal surface of tarsomeres with abundant white pubescence not obscuring integument; metatarsomere I about as long as II–III together.

Abdomen. Ventrites somewhat abundantly, coarsely punctate; ventrite 5 with narrow, longitudinal central sulcus on basal third; apex of ventrite 5 distinctly projected centrally; ventrites with somewhat abundant yellowish-white pubescence not obscuring integument, except glabrous apex of 1–4, pubescence denser, slightly yellower on sides of 1–4, whiter, denser on posterior 2/3 of ventrite 5, pale yellow on sides of posterior third of ventrite 5, and decumbent brownish setae interspersed on sides of anterior 3/4 of ventrite 5.

Variation. Scape orangish on basal half, dark brown on posterior half; elytra almost entirely dark, without transverse light band on anterior third; ventral surface with irregular brownish or orangish-brown areas, or mostly orangish-brown with irregular dark brown areas; yellowish-white pubescent spots on elytra somewhat abundant.

Dimensions (mm) (holotype female/ paratypes female). Total length, 4.30/4.10–5.20; prothoracic length, 0.75/0.75–1.00; anterior prothoracic width, 0.90/0.90–1.15; posterior prothoracic width, 1.00/0.95–1.30; maximum prothoracic width, 1.10/1.05–1.35; humeral width, 1.60/1.55–2.00; elytral length, 3.25/3.05–3.95.

Type material. Holotype female from ECUADOR, Manabí: 5 km S Montecristi , 10.III.2006, F.T. Hovore and I. Swift leg. ( CASC) . Paratypes – ECUADOR, Manabí: vic. Montecristi , 01.01534°S 080.68195°W, 355 m, 2 females, 17–26.II.2006, F.T. Hovore and I. Swift leg. ( LGBC) ; vic. of La Pila , 200 m, 01.11198°S 080.58068W, 3 females, 18-27.II.2006, F.T. Hovore and I. Swift leg. (1, MZSP 2 , LGBC) ; vic. Montecristi , 1 female, 9–10.III.2003, F.T. Hovore leg. ( MZSP) .

Etymology. The specific epithet “transversa” (Latin) refers to the transverse band near the base of the elytra.

Remarks. Euryestola transversa new species is similar to E. iquira Galileo and Martins, 1997 , but differs for the slender body and elytra with a somewhat well-marked transverse white pubescent band on the elytra (body stouter and transverse white pubescent band absent in E. iquira ).

Figures

Figures 35–39. Euryestola transvera new species, holotype female. 35) Dorsal habitus. 36) Ventral habitus. 37) Lateral habitus. 38) Head, frontal view. 39) Ventrite 5.