Collection of specimens of the Neotropical weevil genus Coptonotus Chapuis in Ecuador led to the discovery that Coptonotus cyclopus Chapuis, 1869 was comprised of multiple species. Parsimony analysis of morphological and molecular characters produced a well-supported phylogeny of seven Coptonotus specimens, which contained morphologically diagnosable monophyletic groups. Two new superficially similar species are described: Coptonotus doppelganger Smith and Cognato, new species from Peru and Brazil, and Coptontous uteq Smith and Cognato, new species from Ecuador. Coptonotus uteq was collected from a host tree, providing the first report of the natural history of the genus. Larvae are described for the first time. A key to the species is presented, and the relationship of Coptonotinae to other weevil subfamilies is discussed.

The genera Ectospinula Opitz, new genus, and Prosymnus Laporte, which comprise a monophyletic group within Korynetinae, are reviewed. Ectospinula is monotypic and includes E. graduata Opitz, new species. Prosymnus comprises P. adustus Opitz, new species, P. arsus Opitz, new species, P. astrictus Opitz, new species, P. brevipenis Opitz, new species, P. livens (Boheman), P. mulleri Opitz, new species, P. rudis (Boheman), and P. testaceiventris Pic. Five new synonymies are established: P. livens (Boheman) (= P. burgeoni Pic, P. rufipennis Pic); P. rudis (Boheman) (= P. cribripennis Laporte, P. villosus Gorham); P. testaceiventris Pic (= P. maculipennis Pic). Lectotypes are designated for P. livens, P. rudis, and P. testaceiventris and for the junior synonyms P. burgeoni, P. rufipennis, P. cribripennis, P. tomentosus, P. villosus, and P. maculipennis. According to morphological analysis, Prosymnus species are thought to be carnivorous on other insects. It is postulated that the ancestors of Ectospinula and Prosymnus evolved in southern Africa, south of the Sahara, prior to the Miocene when woodland/forest habitats had not yet given way to the more open-woody grasslands. Included in this treatise are a discussion of natural history, keys to genera and species, and a phylogenetic tree with discussion of phylogenetic interpretations.

The group of Opatrina genera with divided eyes and expanded protarsi are informally known as the blapstinoids. The West Indian members of this group have been historically placed in the genera Blapstinus Dejean, Cenophorus Mulsant and Rey, Ctesicles Champion, Diastolinus Mulsant and Rey, Platylus Mulsant and Rey, and Sellio Mulsant and Rey. The sole fully-winged group is Blapstinus Dejean, which ranges far beyond the geographic limits of this paper. Only those Blapstinus that are recorded from the Biogeographic West Indies are treated here. All species of the remaining genera, including extralimital species placed in Diastolinus Mulsant and Rey, are reviewed and the genera redefined. The extensive and complicated nomenclatural history of this group is fully reviewed. All genera are redefined, diagnosed and the described species reassigned. These genera now include Cenophorus, Diastolinus, Goajiria Ivie and Hart, new genus (type species: Diastolinus curtus Mulsant and Rey, 1859), Nevisia Marcuzzi, new status, Platylus, and Xerolinus Ivie and Hart, new genus (type species: Diastolinus sallei Mulsant and Rey). Sellio and Ctesicles are synonymized with Diastolinus, new synonymies. With the exception of the species of Diastolinus sensu novo, which are revised in a companion paper, each species with a literature history is listed with a full synonymical table, a distributional synopsis, and historical notes on nomenclature. Forty new island records are reported, and dozens of incorrect island records based on misidentifications are corrected. Keys to these genera and additions to the key to North American genera of tenebrionids are provided. Further major nomencltural acts include: Diastolinus impressicollis Fairmaire and Diastolinus brevicollis Fairmaire are removed from Opatrina, and the first is placed as Goniadera (Anaedus) impressicollis (Fairmaire), new combination and the later placed incertae sedis in the Stenochiini. Blapstinus decui Ardoin is returned to original combination from Diastolinus; Diastolinus domingoensis Marcuzzi is placed as Blapstinus domingoensis Marcuzzi, new combination; Diastolinus genaroi Garrido as Blapstinus genaroi (Garrido), new combination; Diastolinus hispaniolensis Marcuzzi as Blapstinus hispaniolensis (Marcuzzi), new combination; Diastolinus inflatitibia Marcuzzi as Blapstinus inflatitibia (Marcuzzi), new combination; Diastolinus klapperichi Marcuzzi as Blapstinus klapperichi (Marcuzzi), new combination; Diastolinus puertoricensis Marcuzzi as Blapstinus puertoricensis (Marcuzzi), new combination; Diastolinus fuscicornis Chevrolat, 1877 as Blapstinus punctatus (Fabricius), new combination; Sellio coarctatus Mulsant and Rey, 1859 as Diastolinus coarctatus (Mulsant and Rey), new combination; Sellio gladiator Garrido as Diastolinus gladiator (Garrido), new combination; Ctesicles insularis Champion as Diastolinus insularis (Champion), new combination; Ctesicles maritimus Champion as Diastolinus maritimus (Champion), new combination; Sellio tibidens Quensel as Diastolinus tibidens (Quensel), new combination; Diastolinus alfaroi Garrido and Gutiérrez as Xerolinus alfaroi (Garrido and Gutiérrez), new combination; Diastolinus armasi Marcuzzi,

The West Indian genus Diastolinus Mulsant and Rey, 1859 (type species: Blaps clathratus Fabricius) is revised. The genus now includes 18 species divided among three species-groups, eight of which are described as new species herein: Diastolinus chalumeaui Hart and Ivie, new species (Guadeloupe Archipelago); Diastolinus leewardensis Hart and Ivie, new species (Leeward Islands); Diastolinus shieli Hart and Ivie, new species (Redonda); Diastolinus azuaensis Hart and Ivie, new species (Hispaniola); Diastolinus desecheo Hart and Ivie, new species (Desecheo Island); Diastolinus doyeni Hart and Ivie, new species (Puerto Rico); Diastolinus vaderi Hart and Ivie, new species (Hispaniola); and Diastolinus hoppae Hart and Ivie, new species (St. Lucia). The following new synonymies are proposed: Diastolinus hummelincki Marcuzzi, 1962 = Diastolinus clavatus Mulsant and Rey, 1859, new synonymy; Diastolinus mulsanti Marcuzzi and D'Aguilar, 1971 = Diastolinus clavatus Mulsant and Rey, 1859, new synonymy; and Diastolinus estebani Garrido, 2004 = Diastolinus coarctatus (Mulsant and Rey, 1859), new synonymy. A lectotype and paralectotypes are designated for Diastolinus hummelincki Marcuzzi, 1962 (not Marcuzzi, 1949 nor 1950), Blaps clathrata Fabricius, 1792, Ctesicles insularis Champion, 1896, and Ctesicles maritimus Champion, 1896. All species are keyed, illustrated, and redescribed, and extensive corrections of misidentifications are reviewed. All 18 species are readily distinguished by both morphological and biogeographical attributes. Newly revised distributions demonstrate that most species distributions can be closely tied to Pleistocene eustastic minima

In Borneo, the weather does not follow annual patterns in either temperature or precipitation. It is therefore unclear whether or not we should expect insects to follow seasonal patterns of occurrence, as they tend to do in non-tropical regions. We examined the occurrence of 129 chrysomelid species during a 34-month period on the Universiti Malaysia Sabah campus located in northern Borneo, to investigate whether their occurrence follows seasonal patterns. For the majority of species, there was no tendency for adults to appear during a particular time of year. For some species, adults were collected in nearly every month of the year. Our findings suggest that most Bornean chrysomelid species do not follow seasonal patterns of occurrence.

Twigs are an understudied habitat utilized by many beetle species. Samples of twigs were collected in all six Level III Ecoregions in Louisiana during April and May 2013. The twigs were maintained in emergence chambers from which 942 specimens of adult Coleoptera were obtained, representing 31 families, 111 genera, and 128 species. Beetle richness and composition were not significantly different among ecoregions. Three species collected represent new state records: Pseudochoragus nitens (LeConte) (Anthribidae); Dryotribus mimeticus Horn (Curculionidae); and Narthecius grandiceps LeConte (Laemophloeidae). Four non-native species, all Curculionidae, were collected: Cyrtepistomus castaneus (Roelofs) (Entiminae); Cnestus mutilatus (Blandford) (Scolytinae); Xylosandrus crassiusculus (Motschulsky) (Scolytinae); and Xylosandrus germanus (Blandford) (Scolytinae).

The othonus species-group of Nearctic Pachybrachis Chevrolat, 1836 is defined and revised. The group is composed of five species, including one described as a new species: Pachybrachis nigricornis (Say), Pachybrachis othonus (Say), Pachybrachis pallidipennis Suffrian, Pachybrachis praeclarus Weise, and Pachybrachis armbrusti Barney, new species. Subspecies designations for P. nigricornis and P. othonus are eliminated. Pachybrachis othonus sioux Balsbaugh and Pachybrachys litigiosus Suffrian are synonymized with P. othonus (Say) (new synonymy), and P. othonus pallidipennis Suffrian is elevated to species rank (new status). Pachybrachis nigricornis autolycus Fall, Pachybrachis nigricornis carbonarius Haldeman, Pachybrachis nigricornis difficilis Fall, Pachybrachis nigricornis nigricornis (Say), Pachybrachis autolycus janus Fall, and Pachybrachis autolycus wahsatchensis Fall are all synonymized with P. nigricornis (Say) (new synonymies). A key to species is given, and a description, figure, and range map is presented for each species.

Microlinus Casey, 1906 is a monotypic genus known only from the USA, Jamaica, Trinidad and Tobago, and Ecuador (Galápagos). Recently, one new species was found in southern Brazil, and it is here described and illustrated. Microlinus perobanus Busanello and Caron, new species, differs from Microlinus pusio (LeConte) by having the head and abdomen darker than the rest of the body, the labrum truncate on anterior margin, and the apex of the median lobe of the aedeagus clearly tapered and pointed. A key to the species of Microlinus is provided. The new Brazilian record extends the distribution of the genus into the southern portion of South America.

Nine new species of pselaphine rove beetles from the southeastern USA are described within four euplectite genera: Rhexius amyae Owens and Carlton, new species; Rhexius jaceus Owens and Carlton, new species; Pseudactium jaitlynum Owens and Carlton, new species; Actium riobuffaloensis Owens and Carlton, new species; Bibloplectus baylessae Owens and Carlton, new species; Bibloplectus bossartae Owens and Carlton, new species; Bibloplectus faulknerensis Owens and Carlton, new species; Bibloplectus ferroi Owens and Carlton, new species; and Bibloplectus kylei Owens and Carlton, new species. A single new synonymy is noted in the genus Conoplectus Brendel, 1888: Conoplectus acornus Carlton, 1983 with Conoplectus canaliculatus (LeConte, 1849), new synonymy. Regional checklists of the species in each genus are provided, and new species are integrated into previously published keys and supported by illustrations of diagnostic characters. All specimens in this study were obtained from the pinned collection of the Louisiana State Arthropod Museum (LSAM, Louisiana State University, Baton Rouge, Louisiana, USA). Evaluation of museum holdings revealed substantial taxonomic coverage of the supertribe regionally: 4,823 specimens were documented, representing 74 of the 87 species and 25 of the 25 genera previously known from the southeastern USA. This publication highlights the inherent value of regionally focused arthropod museums as unique repositories of faunal elements from their area of coverage.

Most studies on seasonal activities of Carabidae in agroecosystems are related to species of temperate regions, with very little information available for Neotropical species. In this study, a survey of adult Carabidae was conducted in three separate study areas located in the Jaboticabal and Guaíra municipalities, São Paulo, Brazil. Each study area was comprised of a forest fragment and adjacent soybean/corn crops. The objective was to determine species composition and seasonal activity of dominant species. Carabids were sampled with pitfall traps arranged along two parallel transects, each 200 m long, placed across the crops/forest boundary and extending 100 m into each habitat. Abaris basistriata Chaudoir, Calosoma granulatum Perty, Odontocheila nodicornis (Dejean), Pentacomia cupricollis (Kollar), Scarites sp. 2, Scarites sp. 3, Scarites sp. 4, Selenophorus alternans Dejean, Selenophorus seriatoporus Putzeys, and Tetracha brasiliensis (Kirby) were the dominant species. These species showed relatively few adult population peaks during the year, and the highest peaks were usually observed from November to March, coinciding with late spring and summer season.

The female of Cyclocephala monacha Ratcliffe is described and illustrated for the first time. Biological and distributional data are provided. A preliminary list of 104 Cyclocephala species from Colombia is provided.

New distributional data are presented for 73 species of Cerambycidae currently known from Mexico. Adetus pictus Bates, 1880, Coleoxestia curoei Eya and Chemsak, 2005, Mallocera spinicollis Bates, 1872 and Xenambyx lansbergei (Thomson, 1865) are new country records for Mexico. Precise collecting localities are given for Amphelictus melas Bates, 1884, Atimia huachucae Champlain and Knull, 1922, Eudesmus ferrugineus (Thomson, 1860), and Mallodon spinibarbis (Linnaeus, 1758).