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 chica sp. nov. Figure 4D-F, N Type material. Holotype , female, Suriname: Sipaliwini, 2.977312°N , 55.38500°W , 200 m, Camp 4 (low), Kasikasima, T. Larsen, 20-25.iii.2012, FIT, SR12-0320-TN1, 2012 CI-RAP survey (NZCS). Diagnosis. 2.0 mm (n = 1), 3.33 x as long as wide. This species is distinguished by the elytral apex attenuate and entire, declivity interstriae 2 convex, declivital interstriae 1 and 3 denticulate and interstriae 2 unarmed, declivital subapical margin armed with three denticles, and declivital interstriae 1 denticles small, 0.5-1 x high as wide. Similar species. C. papillicauda . Description (female). Holotype 2.0 mm, 3.33 x as long as wide. Body, antennae, and legs light brown. Head : epistoma tuberculate. Frons strongly shiny, finely punctate, setose; each puncture bearing a long, erect hair-like seta. Eyes narrowly and deeply emarginate. Submentum narrow, triangular, slightly impressed. Antennal scape regularly thick, shorter than club. Pedicel shorter than funicle. Club circular, flat, type 3; segment 1 corneous, transverse on anterior face, occupying basal ~1/5; segment 2 narrow, transverse, corneous; segments 1 and 2 present on posterior face. Pronotum : 1.3 x as long as wide. In dorsal view long and rounded frontally, type 7, sides parallel in basal 4/5, rounded anteriorly; anterior margin without serrations. In lateral view elongate, disc longer than anterior slope, type 7, summit prominent, on anterior 3/4. Anterior slope with densely spaced, broad fine 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 : 2.0 x as long as wide, 1.5 x as long as pronotum. Scutellum small. Elytra attenuate, parallel-sided in basal 3/4, then acutely rounded to apex, apex entire. Disc shiny; striae minutely punctate, glabrous; interstriae flat, sparsely, minutely punctate, unarmed, glabrous. Declivity gradually rounded, occupying ~1/3 of elytra, smooth, shiny, declivital face weakly convex; striae very shallowly impressed, strial punctures larger, deeper than those of disc, glabrous, striae 1 irregular, slightly laterally broadened from base to declivital midpoint and then narrowing towards apex; interstriae flat, interstriae 1 and 3 each with three small denticles, interstriae 2 unarmed, those of interstriae 1 and 3 subequal, 0.5-1 x high as wide, interstriae with a sparse row of erect bristle-like setae. Posterolateral margin with interstriae 3 and 9 joining, forming a feebly carina armed with three small denticles and continuing submarginally to apex. 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 seven large, socketed denticles, respectively. Etymology. Spanish, chica = girl. Noun in apposition. Distribution. Suriname. Biology. Unknown.