Sternacutus foreroi, Ávila-Jiménez & Botero & García & Santos-Silva, 2025

Ávila-Jiménez, Ángelo, Botero, Juan Pablo, García, Martha Jeaneth & Santos-Silva, Antonio, 2025, Checklist of the Cerambycidae (Insecta, Coleoptera) from a cloud forest in the Chicaque Natural Park (Cundinamarca, Colombia): with the description of five new species and new geographic records, European Journal of Taxonomy 1007, pp. 211-238 : 221-224

Sternacutus foreroi sp. nov.

urn:lsid:zoobank.org:act:2606DFF4-3A67-46A7-909F-801CD3FB5D43

Figs 18–21

Diagnosis

The elytral pubescent pattern, especially the two longitudinal dark pubescent bands on the posterior half, distinguishes S. foreroi sp. nov. from all other congeneric species. Sternacutus foreroi is similar to S. zikani (Melzer, 1935) . However, in addition to the different elytral pubescent pattern, it also differs by the absence of dark maculae on the pronotum (present in S. zikani ) and the centrobasal crest of the elytra without a dense tuft of setae (present in S. zikani ).

Etymology

This species is named in honour of the friend of the first two authors, the entomologist Dimitri Forero (ICN), collector of the holotype of the species and the many other specimens reported in this manuscript.

Type material

Holotype COLOMBIA • ♀; Cundinamarca, Parque Natural Chicaque , “tirolesa”; 4°38.673′ N, 74°18.695′ W; 2240 m a.s.l.; Jul. 2013; D. Forero leg.; Malaise trap; MPUJ, MPUJ _ ENT 0072597 .

Measurements (in mm)

Total length: 5.55; prothoracic length: 0.90; anterior prothoracic width: 1.10; posterior prothoracic width: 1.40; widest prothoracic width: 1.70 humeral width: 2.05; elytral length: 4.15.

Description

Female holotype ( Figs 18–21 )

COLORATION. Integument mostly dark brown; scape orangish brown except dark-brown dorsal apex; pedicel mostly orangish brown; antennomeres III–X orangish brown except dark brown apex; XI orangish brown. Anteclypeus dark brown close to postclypeus, brownish close to labrum; palpomeres brown except yellowish-brown apex of maxillary palpomere IV and labial palpomere III. Labrum yellowish-brown anteriorly. Elytra mostly dark brown from anterior fifth to posterior quarter, dark reddish brown on remaining surface, except irregular blackish maculae on anterior half and two longitudinal dark-brown maculae on posterior half, innermost macula shorter. Femoral peduncles dull-yellow; remaining surface gradually brown toward apex. Protibiae dark brown, slightly darker on apical third; mesotibiae brownish on basal ⅔, dark brown on apical third; metatibiae brown, except dark-brown apex. Tarsomeres mostly dark brown. Abdominal ventrites 1–4 mostly orangish brown; ventrite 5 mostly dark brown.

HEAD. Frons abundantly, finely punctate; with dense yellow pubescence close to eyes, abundant pale-yellow pubescence close to postclypeus, and moderately abundant yellowish-brown pubescence centrally; remaining surface with dense dark-brown pubescence with a few short, decumbent yellowish-white setae interspersed; with one long, erect brown seta close to eyes. Area between antennal tubercles and upper eye lobes with abundant, both yellowish-brown and dark-brown pubescence, except glabrous central area; remaining surface of vertex with moderately abundant dark-brown pubescence, more dull yellowish brown laterally, except dense yellow pubescence close to eyes. Area behind upper eye lobes with dense yellow pubescence superiorly, pubescence gradually paler toward lower eye lobe, except glabrous area close to prothorax. Area behind lower eye lobes with dense pale-yellow pubescence, glabrous near prothorax. Genae with dense yellow pubescence except glabrous apex. Antennal tubercles with abundant dark-brown pubescence except yellow pubescence on dorsal base. Postclypeus with abundant yellow pubescence close to frons and abundant yellowish-white pubescence close to anteclypeus; with some long, erect brownish setae interspersed. Labrum subsmooth basally and apically, sparsely, finely punctate centrally; with moderately abundant yellowish-white pubescence not obscuring integument and long, erect yellowish-brown setae interspersed. Distance between upper eye lobes about 0.46 times length of scape; in frontal view, distance between lower eye lobes 0.63 times as long as scape. Antennae reaching elytral apex at middle of antennomere VII. Scape with abundant yellow pubescence partially obscuring integument, except dark-brown pubescence on dark integumental area, and one long, erect seta apically. Pedicel with abundant yellowish pubescence not obscuring integument. Antennomeres III–XI with abundant light yellow pubescence, pubescence sparser on dark integumental area of III–X. Antennal formula (ratio) based on length of antennomere III: scape = 0.75; pedicel = 0.10; IV = 0.94; V = 0.87; VI = 0.82; VII = 0.74; VIII = 0.79; IX = 0.81; X = 0.82; XI = 0.74.

THORAX. Prothorax wider than long; lateral margins rounded and divergent on anterior third, more strongly rounded and divergent from this point to lateral tubercles, then convergent toward posterolateral angles; lateral tubercle moderately large, with acute apex not directed backward, located on posterior third. Pronotum coarsely punctate; with dense pale-yellow pubescence, except one longitudinal dull yellowish-brown pubescent band on each side of central area on anterior ⅔. Prosternum with abundant pale-yellow pubescence laterally and abundant yellowish-white pubescence centrally, except glabrous anterior sulcus. Narrowest area of prosternal process 0.67 times as wide as procoxal cavity. Mesanepisternum with dense yellowish-brown pubescence; mesepimeron with dense pale-yellow pubescence; mesoventrite with moderately abundant yellowish-white pubescence; narrowest area of mesoventral process 0.7 times as wide as mesocoxal cavity. Metanepisternum and sides of metaventrite with dense pale-yellow pubescence; remaining surface of metaventrite with abundant whitish pubescence. Scutellum with dense pale-yellow pubescence, pubescence slightly darker anterocentrally.

ELYTRA. Abundantly, coarsely punctate, punctures sparser and finer near apex; with two moderately distinct longitudinal carinae, outermost from base to posterior quarter, innermost from apex of centrobasal crest to posterior quarter; humeral carinae moderately well marked from humerus to posterior quarter. Centrobasal crest elevated, longer than metatarsomere I, with sparse, short, dark pubescence not obscuring integument. Surface with abundant yellow pubescence not obscuring anteriorly; with pale-yellow pubescence on remaining surface, except fragmented yellowish-white pubescent bands on anterior half and close to suture, wide, irregular, transverse yellowish-white pubescent band about middle, two longitudinal dark pubescent bands on posterior half, innermost beginning on elytral middle, outermost located on tumid area from just after middle and not reaching posterior third, and irregular brown and black pubescent spots interspersed. Apex obliquely truncate.

LEGS. Femora with abundant yellowish-white pubescence not obscuring integument, pubescence whiter ventrally; tibiae with abundant yellowish-white pubescence partially obscuring integument, except dark-brown pubescence on dark integumental area; tarsomere I with dense pale-yellow pubescence; remaining tarsomeres with black pubescence; metatarsomere I longer than II–III together.

ABDOMEN. Ventrites with abundant whitish pubescence not obscuring integument; apex of ventrite 5 truncate.

Figures

Figs 18–21. Sternacutus foreroi sp. nov., holotype, ♀ (MPUJ_ENT 0072597). 18. Dorsal view. 19. Ventral view. 20. Lateral view. 21. Detail of head, frontal view. Scale bars = 1 mm.