Coptoborus panosus, Smith & Cognato, 2021

Smith, Sarah M. & Cognato, Anthony I., 2021, A revision of the Neotropical genus Coptoborus Hopkins (Coleoptera, Curculionidae, Scolytinae, Xyleborini), ZooKeys 1044, pp. 609-720 : 609

Coptoborus panosus sp. nov. Figure 12D-F, N

Type material.

Holotype, female, French Guiana: Amazone Nature Lodge, 30 km SE Roura on Kaw Rd., 10-18-IV-2007. D.G. & J.E. Eger, 4°33.570'N, 052°12.433'W 300 m, MV light trap (NMNH).

Diagnosis.

2.4 mm (n = 1), 2.67 × as long as wide. This species is distinguished by the elytra attenuate, declivital interstriae 2 convex and granulate, posterolateral margin of elytra carinate from apex to interstriae 7, and declivital interstriae moderately covered with long, erect hair-like setae.

Similar species.

C. vrataski .

Description

(female). Holotype 2.4 mm, 2.67 × as long as wide. Body light brown, antennae and legs lighter. Head: epistoma tuberculate. Frons dull, tuberculate, finely punctate, setose; each puncture bearing a long, erect hair-like seta. Eyes broadly and moderately emarginate. Submentum large, triangular, deeply impressed. Antennal scape regularly thick, much shorter than club. Pedicel shorter than funicle. Club longer than wide, flat, type 4; segment 1 corneous, procurved on anterior face, occupying basal ~1/3; segment 2 narrow, weakly procurved, corneous; segments 1 and 2 present on posterior face. Pronotum: 0.9 × as long as wide. In dorsal view basic and parallel-sided, type 2, sides parallel in basal 3/4, rounded anteriorly, abundantly covered with long hair-like setae; anterior margin with four subequal serrations. In lateral view elongate, disc longer than anterior slope, type 7, summit prominent, on anterior 2/3. Anterior slope with densely spaced, broad fine asperities, becoming lower and more strongly transverse towards summit. Disc dull with sparse, minute punctures. Lateral margins obliquely costate. Elytra: 1.7 × as long as wide, 1.9 × as long as pronotum. Scutellum minute. Elytra attenuate, parallel-sided in basal 2/3, then acutely rounded to apex, apex entire. Disc smooth, shiny; strial punctures moderate, deep, each bearing a recumbent seta the length of a puncture; interstriae flat, densely, minutely punctate, unarmed, each puncture bearing a long, erect hair-like seta. Declivity steep, occupying ~1/3 of elytra, smooth, shiny, declivital face weakly convex; striae not impressed, strial punctures larger, deeper than those of disc, each puncture bearing a semi-erect seta as long as two punctures; interstriae weakly convex, sparsely granulate, granules small, separated by the distance of three granules, interstriae moderately setose, setae long, erect hair-like, slightly longer than interstriae 1 width. Posterolateral margin apically produced, sharply carinate and serrate. Legs: protibiae obliquely triangular, broadest at apical 1/5; apical 1/2 of outer margin with eight large, socketed denticles, their length longer than basal width. Meso- and metatibiae flattened; outer margin evenly rounded with nine large, socketed denticles.

Etymology.

L. panosus = like bread. In reference to the species shape and color which resemble a baguette. Adjective.

Distribution.

French Guiana.

Biology.

Unknown.

Figures

Figure 12. Dorsal, lateral, frontal and declivital view of Coptoborus osbornae holotype, 1.5 - 1.7 mm (A-C, M), C. panosus holotype, 2.4 mm (D-F, N), C. papillicauda holotype, 2.0 mm (G-I, O), C. paurus holotype, 1.7 mm (J-L, P). All photographs by SMS, except J-L, P copyright National Museum of Natural History, Smithsonian Institution, Washington, D. C., published by permission.