Coptoborus sicula, 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 sicula sp. nov. Figure 15J-L, P

Type material.

Holotype, female, Ecuador: Napo Prov. [= Orellana Prov.], Res[erva]. Ethnica Waorani, 1 km S. Okone Gare Camp, Trans[ect]. Ent[omology]., 00°39'10"S, 076°26'W, 220 m, July1996, T.L. Erwin et al. collectors, insecticidal fogging, terra firme forest, trans[ect] 1, sta[tion] 1, Erwin lot #1521 (ICB). Paratype, female, as holotype except: Tiputini Biodiversity Station, 00°37'55"S, 076°08'39"W, 220-250 m, June 1998, T.L. Erwin et al. collectors, insecticidal fogging, terra firme forest, trans[ect] 6, sta[tion] 2, Erwin lot #1851 (NMNH, 1).

Diagnosis.

2.1 mm (n = 1), 3.0 × as long as wide. This species is distinguished by the elytral apex strongly acuminate, declivital interstriae 2 granulate near apex, declivity rounded, without a costa on posterolateral margin, and elytral discal interstriae 2 with one row of uniseriate punctures.

Similar species.

C. attenuatus , C. bellus , C. katniss , C. sagitticauda , C. sarahconnor , C. yar .

Description

(female). Holotype 2.1 mm, 3.0 × as long as wide. Body, antennae, and legs light brown. Head: epistoma smooth. Frons shiny, finely punctate, setose; each puncture bearing a long, erect hair-like seta. Eyes narrowly and moderately emarginate. Submentum narrow, triangular, deeply impressed. Antennal scape short and thick, as long as club. Pedicel shorter than funicle. Club circular, flat, type 3; segment 1 corneous, transverse on anterior face, occupying basal ~1/3; segment 2 narrow, transverse, corneous; segments 1 and 2 present on posterior face. Pronotum: 1.0 × as long as wide. In dorsal view basic and parallel-sided, type 2, sides parallel in basal 5/7, rounded anteriorly; anterior margin without serrations. In lateral view tall, type 2, disc flat, summit pronounced, at midpoint. Anterior slope with densely spaced, broad fine asperities, becoming lower and more strongly transverse towards summit. Disc strongly shiny with sparse, minute punctures, some longer hair-like setae at margins. Lateral margins obliquely costate. Elytra: 2.0 × as long as wide, 2.0 × as long as pronotum. Scutellum minute. Elytra attenuate, parallel-sided in basal 71%, then acutely narrowed to acuminate apex. Disc smooth, shiny; strial punctures large, shallow, glabrous; interstriae flat, minutely, densely punctate, unarmed, each puncture bearing a long semi-erect bristle-like seta. Declivity gradually rounded, occupying ~2/5 of elytra, smooth, shiny, declivital face strongly convex; striae not impressed, strial punctures larger, deeper than those of disc, glabrous; interstriae flat, uniformly granules, granules distinct, small, spaced by at least four diameters of a granule, interstriae with a row of moderately long bristle-like erect setae, as long as the width of interstriae 2.

Posterolateral margin rounded. Legs: protibiae obliquely triangular, broadest at apical 1/3; apical 1/2 of outer margin with seven large, socketed denticles, their length longer than basal width. Meso- and metatibiae flattened; outer margin evenly rounded with seven large, socketed denticles.

Etymology.

L. sica = dagger, - ulus = little. Noun in apposition.

Distribution.

Ecuador (Orellana).

Biology.

Specimens were collected by canopy fogging.

Figures

Figure 15. Dorsal, lateral, frontal and declivital view of Coptoborus schulzi, 2.3 mm (A-C, M), C. scully paratype, 1.7 - 2.0 mm (D-F, N), C. semicostatus 2.8 - 3.1 mm (G-I, O), C. sicula holotype, 2.1 mm (J-L, P). All photographs by SMS.