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 brevicauda sp. nov. Figure 2J-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, October 1995, T.L. Erwin et al. collectors, insecticidal fogging, terra firme forest, trans[ect] 6, sta[tion] 5, Erwin lot #1181 (ICB). Paratypes , female, as holotype except: January 1995, trans[ect] 6, sta[tion] 10, Erwin lot #1039 (MSUC, 1); as holotype except: October 1996, trans[ect] 6, sta[tion] 5, Erwin lot #1715 (NMNH, 1). Diagnosis. 2.4-2.6 mm (mean = 2.5 mm; n = 3), 2.4-2.5 x as long as wide. This species is distinguished by the elytral apex attenuate, entire and produced, apical projection the width of striae 2, declivital interstriae 2 convex, declivital interstriae 1-3 denticulate, denticles minute, faint, their height less than 0.5 x interstriae width, posterolateral margin of declivity with interstriae 3 and 9 joining, forming a carina and continuing submarginally to apex, and stout form. Similar species. C. gentilis . Description (female). 2.4-2.6 mm (mean = 2.5 mm; n = 3), 2.4-2.5 x as long as wide ( holotype 2.4 mm, 2.4 x as long as wide). Body light brown to brown, antennae and legs lighter. Head : epistoma tuberculate. Frons strongly shiny, 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, shorter than club. Pedicel shorter than funicle. Club circular, flat, type 3; segment 1 corneous, subconvex on anterior face, occupying basal ~1/4; 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 3/4, rounded anteriorly; anterior margin with four subequal serrations. In lateral view tall, type 2, disc flat, summit pronounced, on basal 2/5. Anterior slope with densely spaced, broad very coarse asperities, becoming lower and more strongly transverse towards summit. Disc dull with sparse, minute punctures, some longer hair-like setae at margins. Lateral margins obliquely costate. Elytra : 1.4-1.5 x as long as wide, 1.4 x as long as pronotum. Scutellum small. Elytra attenuate, parallel-sided in basal 68%, then acutely tapered to apex, apex apically produced, entire. Disc shagreened, dull; 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 semi-erect bristle-like seta. Declivity gradually rounded, occupying ~1/2 of elytra, shagreened, shiny, declivital face 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 flat, interstriae 1-3 uniformly minutely granulate along their entire lengths, granules faint, their height less than 0.5 x interstriae width, setae semi-erect, bristle-like, in two rows on interstriae 1 and uniseriate on interstriae 2 and 3. Posterolateral margin with interstriae 3 and 9 joining, forming an acute carina and continuing submarginally to apex. Legs : protibiae obliquely triangular, broadest at apical 1/4; 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 ten and nine large, socketed denticles, respectively. Etymology. L. brevis = short, cauda = tail. Noun in apposition. Distribution. Ecuador (Orellana). Biology. Specimens were collected by canopy fogging.