Cobelura prenai, Santos-Silva & Devesa, 2021

Santos-Silva, Antonio & Devesa, Sergio, 2021, New species and new records in American Acanthocinini (Coleoptera, Cerambycidae, Lamiinae), Zootaxa 4942 (4), pp. 569-582 : 570-571

Cobelura prenai sp. nov.

( Figs 1–5 )

Description. Male holotype. Integument mostly dark brown; palpi yellowish brown except apices of maxillary palpomere IV and labial palpomere III reddish brown; anteclypeus reddish brown; labrum yellowish brown; frons with longitudinal dark reddish brown band on each side of middle; scape reddish brown on anterior 3/4, almost black on posterior quarter; antennomeres III–IV light reddish brown on anterior fifth, reddish brown toward blackish posterior fifth; antennomeres V–VII reddish brown on anterior 4/5, blackish on posterior fifth; antennomeres VIII–XI brown; elytra mostly dark reddish brown, except apex light yellowish brown; trochanters mostly reddish brown; femora reddish brown with apex blackish; tibiae blackish basally, brownish about posterior half, reddish brown on remaining surface; tarsomeres I–IV light reddish brown; tarsomeres V yellowish on anterior 3/4, brown on posterior quarter. Abdominal ventrite I almost black except dark reddish-brown apex; ventrites II–V reddish brown, except blackish central area (blackish area gradually narrowed toward V, almost reaching apex on II and III, reaching about middle on IV–V.

Head. Frons minutely, abundantly punctate; with yellowish-brown pubescence, sparse centrally, especially on reddish-brown area, distinctly denser laterally; with a few long, erect dark setae laterally near antennal tubercles. Vertex and area behind upper eye lobes nearly smooth; central area between antennal tubercles and upper eye lobes glabrous; area close to eyes with dense yellowish-brown pubescence (this pubescence distinctly wider behind upper eye lobes); area close to median groove with narrow yellowish-brown pubescent band; with brown pubescence on vertex between the areas with yellowish-brown pubescence, less distinctly centrally toward prothorax. Area behind lower eye lobes and gena with yellowish-brown pubescence not obscuring integument (pubescence almost absent on genae close to frons). Wide central area of postclypeus with yellowish-brown pubescence not obscuring integument, and long, erect dark setae interspersed; sides glabrous. Labrum coplanar with anteclypeus at posterior 2/3, inclined at anterior third; with sparse yellowish pubescence on posterior third, and long, erect dark setae interspersed close to inclined area; anterior margin with fringe of yellowish-brown setae. Distance between upper eye lobes 0.09 times length of scape (0.17 times distance between outer margins of eyes); in frontal view, distance between lower eye lobes 0.31 times length of scape (0.56 times distance between outer margins of eyes). Antennae 2.0 times elytral length, reaching elytral apex at middle of antennomere VIII; scape with yellowish-white pubescence basally, dark yellowish-brown on dark area (appearing to be darker due to the integument color), yellowish on remaining surface; pedicel with brownish pubescence; antennomere III with whitish pubescence on anterior quarter (pubescence denser dorsally), brownish on dark apex, yellowish, not obscuring integument on remaining surface; antennomere IV with yellowish pubescence basally, whitish, dense on remaining anterior third (pubescence denser on inner side), brownish on dark area, yellowish, not obscuring integument on remaining surface; antennomeres V–VIII with yellowish pubescence not obscuring integument, more brownish on dark area; antennomeres IX–XI with yellowish pubescence not obscuring integument, appearing to be darker due to the integument color; scape, pedicel, and antennomeres III–V with long, erect dark setae ventrally (setae gradually shorter, sparser toward V). Antennal formula based on length of antennomere III: scape = 1.23; pedicel = 0.08; IV = 0.81; V = 0.62; VI = 0.54; VII = 0.46; VIII = 0.42; IX = 0.35; X = 0.31; XI = 0.31.

Thorax. Sides of prothorax divergent from anterolateral angles to about middle, subparallel-sided toward apex. Pronotum coarsely, somewhat sparsely punctate; with wide, dense yellowish-brown pubescent band on sides of central area, from anterior to posterior margin, with brown pubescence not obscuring integument centrally and laterally, and irregular yellowish-brown pubescent maculae interspersed centrally, more abundant posteriorly. Sides of prothorax, prosternum, and prosternal process with dense yellowish-brown pubescence; narrowest area of prosternal process slightly narrower than 0.2 times width of procoxal cavity. Mesoventrite with sparse yellowish-brown pubescence centrally, denser laterally, except glabrous narrow area close to mesocoxal cavities; mesanepisternum, mesepimeron, and metanepisternum with dense yellowish-brown pubescence. Mesoventral process with sides convergent from base to posterior third, divergent in posterior third; narrowest area almost 0.3 times width of mesocoxal cavity. Sides of metaventrite with dense yellowish-brown pubescence, and circular brownish pubescent maculae interspersed; central area with yellowish pubescence not obscuring integument, pubescence absent on center of posterior half. Scutellum with longitudinal light yellowish-brown pubescence centrally, pubescence brownish laterally.

Elytra. Moderately coarsely, sparsely punctate on anterior half, punctures gradually finer, sparser toward posterior quarter, absent from this area to apex; two dorsal carinae slightly distinct; with abundant, irregular, mostly transverse light yellowish-brown pubescent bands, except oblique band after middle, and area between yellowish-brown bands with brownish, slightly distinct pubescence. Legs. Femora and tibiae with yellowish-white pubescence not obscuring integument (pubescence yellower depending on light intensity); protibiae with distinct tooth about middle of ventral surface, and small, sparse tubercles on ventral surface of anterior half; mesotibiae with moderately long, erect dark setae on posterior half, distinctly denser dorsally; dorsal sulcus of mesotibiae with dense nearly golden pubescence; metatibiae with erect dark setae about posterior third, distinctly more abundant dorsally. Metatarsomere I about as long as II–III together.

Abdomen. Ventrites with light yellowish-brown pubescence, denser on sides of apex of I–IV, sparser centrally (nearly absent on center of I); apex of V strongly emarginated centrally, making the sides spiniform.

Dimensions (mm). Total length, 11.6; prothoracic length, 2.3; anterior prothoracic width, 2.9; posterior prothoracic width, 2.1; maximum prothoracic width, 2.9; humeral width, 4.0; elytral length, 8.0.

Type material. Male holotype from COSTA RICA, Heredia, “ 3 km al Sur de Puerto Viejo, Estación Biológica La Selva” (20º26’N / 84º01’W), 16.IV.2001, J. Prena leg. ( MHNUSC, temporarily in SDPC) .

Etymology. The new species is named in honor of Jens Prena, who collected the holotype.

Remarks. Cobelura prenai sp. nov. is similar to C. stockwelli Corbett, 2004 ( Figs 6–8 ), but differs as follows (males): scape distinctly, somewhat abruptly widened apically; central area of pronotum with sparse yellowishbrown pubescent maculae, and sides of this area with dense pubescent bands of same color; mesoventral process with sides convergent from base to posterior third and divergent in posterior third; metatibiae not arched. In C. stockwelli , the scape is slightly and gradually widened from base to apex; central area of pronotum with abundant yellowish-brown pubescent maculae, and sides of this area with fragmented band of same color; mesoventral process wider and with sides uniformly convergent from base to apex; and the metatibiae are arched.

Figures

FIGURES 1–8. Cobelura spp. 1–5) Cobelura prenai, male holotype: 1) Dorsal habitus; 2) Ventral habitus; 3) Lateral habitus; 4) Head, frontal view; 5) Mesotibia. 6–8) Cobelura stockwelli Corbett, 2004, male paratype: 6) Dorsal habitus; 7) Ventral habitus; 8) Lateral habitus.