Coptoborus bettysmithae, 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 bettysmithae sp. nov. Figure 2G-I, O

Type material.

Holotype, female, Ecuador: Napo Prov. [= Orellana Prov.], 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] 4, sta[tion] 5, Erwin lot #1834 (ICB).

Diagnosis.

2.4 mm (n = 1), 2.67 × as long as wide. This species is distinguished by the elytral apex attenuate and weakly emarginate, declivital interstriae 2 convex, declivital interstriae 1-3 denticulate, posterolateral margin of declivity with interstriae 3 and 9 joining, forming a carina and continuing submarginally to apex, stout form, declivital interstriae 1 with a uniseriate row of erect scale-like setae, and posterior ~40% of elytra gradually tapered to apex.

Similar species.

C. barbicauda , C. capillisoror , C. hansen , C. schulzi , C. subtilis , C. trinity , C. uhura .

Description

(female). Holotype 2.4 mm, 2.67 × as long as wide. Body light brown, elytral declivity darker, antennae and legs lighter. Head: epistoma smooth. Frons dull, finely punctate, setose; each puncture bearing a long, erect hair-like seta. Eyes broadly 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 ~1/4; segment 2 broad, transverse, corneous; segments 1 and 2 present on posterior face. Pronotum: 1.1 × as long as wide. In dorsal view long and rounded frontally, type 7, sides parallel in basal 3/4, rounded anteriorly; anterior margin with two serrations. In lateral view tall, type 2, disc flat, summit evident, on basal 1/3. Anterior slope with densely spaced, broad coarse asperities, becoming lower and more strongly transverse towards summit. Disc strongly shiny with dense, minute punctures, some longer hair-like setae at margins. Lateral margins carinate on basal third. Elytra: 1.6 × as long as wide, 1.4 × as long as pronotum. Scutellum minute. Elytra attenuate, parallel-sided in basal 64%, then acutely tapered to apex, apex weakly emarginate. Disc smooth, shiny; strial punctures large, deep, each bearing a recumbent seta the length of a puncture; interstriae flat, minutely, moderately punctate, unarmed, each puncture bearing a long, erect bristle-like seta. Declivity gradually rounded, occupying ~2/5 of elytra, shagreened, shiny, declivital face weakly flattened; striae 1 and 2 feebly impressed, strial punctures larger, deeper than those of disc, each puncture bearing a recumbent seta as long as two punctures; interstriae flat, uniformly denticulate along their entire lengths, denticles spaced by two widths of a denticle, setae semi-erect, scale-like, as long as interstriae 1 width; interstriae 1 with a one row of short setae as described for striae on each side of median erect setae. Posterolateral margin with interstriae 3 and 9 joining, forming a carina and continuing submarginally to apex. Legs: protibiae distinctly triangular, broadest at apical 1/5; apical 1/2 of outer margin with six large, socketed denticles, their length longer than basal width. Meso- and metatibiae flattened; outer margin evenly rounded with six and eight large, socketed denticles, respectively.

Etymology.

For Catherine (Betty) Smith, beloved grandmother of SMS. Betty was a remarkable woman who embodied the theme of ‘kick-ass’ women: she was a "Rosie the Riveter" (https://www.loc.gov/rr/program/journey/rosie.html) in her youth and later displayed extraordinary fortitude in her battles with cancer. Noun in genitive.

Distribution.

Ecuador (Orellana).

Biology.

The holotype was collected by canopy fogging.

Figures

Figure 2. Dorsal, lateral, frontal and declivital view of Coptoborus barbicauda holotype, 2.0 mm (A-C, M), C. bellus, 2.1 - 2.3 mm (D-F, N), C. bettysmithae holotype, 2.4 mm (G-I, O), C. brevicauda holotype, 2.4 - 2.6 mm (J-L, P). All photographs by SMS.