A revision of the Neotropical genus Coptoborus Hopkins (Coleoptera, Curculionidae, Scolytinae, Xyleborini) Author Smith, Sarah M. https://orcid.org/0000-0002-5173-3736 Department of Entomology, Michigan State University, 288 Farm Lane, East Lansing, Michigan 48824, USA camptocerus@gmail.com Author Cognato, Anthony I. Department of Entomology, Michigan State University, 288 Farm Lane, East Lansing, Michigan 48824, USA text ZooKeys 2021 2021-06-16 1044 609 720 http://dx.doi.org/10.3897/zookeys.144.62246 journal article http://dx.doi.org/10.3897/zookeys.144.62246 1313-2970-1044-609 66F01A49D32448A8AC2669BF3374894C C96ED07B505A52A8ADA354E1F70BB7C0 Coptoborus murinus sp. nov. Figure 10J-L, P 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] 5, sta[tion] 4, Erwin lot #1843 (ICB). Diagnosis. 2.2 mm (n = 1), 2.44 x as long as wide. This species is distinguished by the elytral apex broadly rounded and entire, posterolateral margin feebly carinate to striae 6, primarily visible between suture and striae 2, unequally serrate and appearing broken, declivity gradual, occupying posterior half of elytra, and declivital interstrial setae twice as long as interstriae 1 width. Similar species. C. osbornae . Description (female). Holotype 2.2 mm, 2.44 x as long as wide. Body brown, antennae and legs lighter. Head : epistoma smooth. Frons strongly 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 regularly thick, much shorter than club. Pedicel shorter than funicle. Club circular, flat, type 3; segment 1 corneous, subconvex on anterior face, occupying basal ~1/3; segment 2 narrow, subconvex, corneous; segments 1 and 2 present on posterior face. Pronotum : 1.0 x as long as wide. In dorsal view basic and parallel-sided, type 2, sides parallel in basal 2/3, rounded anteriorly; anterior margin without serrations. In lateral view uniformly rounded without a clear summit, type 1. Anterior slope with densely spaced, broad fine asperities, becoming lower and more strongly transverse towards summit. Disc smooth, strongly shiny with sparse, minute punctures, some longer hair-like setae at margins. Lateral margins obliquely costate. Elytra : 1.4 x as long as wide, 1.4 x as long as pronotum. Scutellum minute. Elytra round, parallel-sided in basal 69%, then broadly rounded to apex, apex entire. Disc subshiny; strial punctures large, deep, each bearing a recumbent seta the length of two punctures; interstriae flat, minutely, moderately punctate, unarmed, each puncture bearing a long semi-erect bristle-like seta. Declivity gradually rounded, occupying ~1/2 of elytra, smooth, shiny, declivital face weakly convex; 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 weakly convex, uniformly denticulate along their entire lengths, setae thick, erect, bristle-like, twice as long as interstriae 1 width. Posterolateral margin feebly carinate to striae 6, primarily visible between suture and striae 2, unequally serrate. 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 nine and eight large, socketed denticles, respectively. Etymology. L. murinus = of mice. In reference to the species hairy globular appearance. Adjective. Distribution. Ecuador (Orellana). Biology. The holotype was collected by canopy fogging.