The eight species of dynastine scarab beetles that occur in Chile are reviewed. Keys, descriptions, geographic distributions, monthly adult activity, notes on natural history, illustrations, and distribution maps are provided for all species. The erroneous records of 16 dynastine species reported from Chile are reviewed and clarified. The monotypic genus Chiliphileurus is reduced to junior synonymy with Eophileurus Arrow, 1908, and its only species, Chiliphileurus tuberculatus , follows as a new junior synonym of the Asian Eophileurus cingalensis Arrow, 1908.

This paper is the first in a series on the genus Trachys Fabricius from China. Diagnostic characters and the unreliability of some characters commonly used by previous authors are discussed, and new diagnostic characters are proposed for taxonomic studies of this difficult group. Eight new species are described and illustrated from China: Trachys purpuratus Peng, new species; Trachys acuminatus Peng, new species; Trachys suichuanensis Peng, new species; Trachys fusiformis Peng, new species; Trachys ovalis Peng, new species; Trachys latus Peng, new species; Trachys lushanensis Peng, new species; and Trachys meilingensis Peng, new species.

Trapeziderus koreanus Park and Ahn, new species is described from Korea. The new species collected under bark is similar to Trapeziderus imitator Cameron in having black elytra and a temporal carina but can be distinguished by the reddish-brown antennomere 10, the chaetotaxy of the pronotum, the incomplete basal line of male sternite VIII, and the different shape and structure of the aedeagus. A description and illustrations of the new species are provided to facilitate identification.

Belladessus is reported from Brazil for the first time. Two new species in the genus are described: Belladessus espinhasso, new species is described from the state of Minas Gerais, while Belladessus minutopunctatus, new species is described from the Federal District. Belladessus femineus is reported from the northern Brazilian state of Roraima. The new species were collected in the Brazilian Shield, expanding the geographic distribution of the genus that until now was limited to the Andean and the Guiana Shield regions of South America.

A taxonomic study of the genus Bellatheta Roubal in Korea is presented. Two species, including two new combinations [Bellatheta effecta (Sawada), new combination and Bellatheta myohyangsani (Paśnik), new combination], are recognized and a new synonymy [B. myohyangsani = Nepalota namphoensis (Paśnik), new synonym] is proposed. Bellatheta myohyangsani is reported for the first time in South Korea. A key, a redescription and illustrations of diagnostic characters of Korean species are provided.

Chelonarium signatum is known from northern and central South America. The original description of C. signatum was very brief and lacked description of much of the external morphology and the genitalia. We present a redescription of C. signatum based on examination of material from southern Paraguay, including descriptions of the male and female genitalia. Images are presented of the adult habitus and external morphology, along with notes on the reproductive biology and collection in Paraguay. The history of the type specimen is traced, and photographs of the specimen and its labels are provided. A lectotype is designated for the species.

Cattle treated with chemicals to control parasites can fecally excrete residues that have the potential to adversely affect local assemblages of dung beetles (Coleoptera: Scarabaeidae). Using 200-m transects and dung-baited pitfall traps, we compared the dung beetle communities on 19 cattle farms in Maryland, USA where pests and/or parasites were controlled with chemicals (CU, n = 9 farms) or where no chemicals were used (NCU, n = 10 farms). Traps were baited once a month with fresh cattle dung from each location. We collected a total of 31 species comprising 12,380 dung beetle specimens. The five most abundant species, Onthophagus taurus (Schreber), Onthophagus pennsylvanicus Harold, Onthophagus hecate (Panzer), Blackburneus stercorosus (Melsheimer), and Labarrus pseudolividus (Balthasar), accounted for 85% of the total individuals sampled. No difference was found when comparing total abundances of dung beetles sampled from NCU and CU farms. There was, however, a consistent significant effect of month across multiple dominant species. Using Random Forests analyses, we determined site location, soil type, and chemical lethality as additional important predictor variables affecting dung beetle abundances on Maryland farms. Present-day management practices implement a broad spectrum of chemical usage. Our work examines this variability to facilitate the understanding of factors currently affecting the biodiversity and abundance of beneficial dung beetles.

A new species, Phaea sondenegro Botero, Ahumada-C., and Navas, new species, is described from Colombia (Bolívar department), and the lectotype of Phaea flavovittata Bates, 1881 is illustrated for the first time. Additionally, the known geographical distribution of eleven species of Cerambycidae (Cerambycinae and Lamiinae) is expanded in Colombia.

A third species of Amazonopsis , Amazonopsis cerdani Barr and Cerdan, new species (Coleoptera: Elmidae), is herein described from French Guiana. One female paratype of Amazonopsis theranyi Barr from Peru is tentatively reassigned to A. cerdani as a non-paratype. Photographic images of the male and female habitus, and the male genitalia, are provided, as is a distribution map and a key to the species. Amazonopsis cerdani differs from A. theranyi from Peru and Amazonopsis camachoi Barr from Venezuela by the presence of prominent spines on protarsomeres 1–4 of males, among other characters. The habitat of this species is small, shallow, lowland streams with sandy-silty substrates and low flow. Specimens were collected from unconsolidated leaf litter in depositional areas, and from stick and leaf packs lodged in the current. Genetic analysis conducted on three specimens from two localities, a male and two females, showed that they are conspecific.

To facilitate ex-situ conservation of predaceous endangered insect species large numbers of live prey organisms are typically collected from the natural environment, potentially exacerbating biodiversity decline. To address this issue, two endangered beetle species (Cybister chinensis Motschulsky, 1854 and Cybister lewisianus Sharp, 1873) were reared using only laboratory-bred food. The beetle larvae were provided with laboratory-bred two-spotted cricket (Gryllus bimaculatus DeGeer; Orthoptera: Gryllidae) larvae as prey. The survival rates of the beetle larvae were as follows: C. chinensis, first instar larvae, 100% (n = 25), second instar larvae, 100% (n = 25), and third instar larvae, 92% (n = 23); C. lewisianus, first instar larvae 96% (n = 24), second instar larvae 92% (n = 23), and third instar larvae 92% (n = 23). The body length of adult insects fed laboratory-bred crickets did not significantly differ compared to the body length of field-collected adults.

The five species of the genus OncocephalaAgassiz, 1846 (Coleoptera: Chrysomelidae: Cassidinae: Oncocephalini) known from the Philippines are redescribed and illustrated. A key to these species is provided.

Phileurus angustatus Kolbe (Coleoptera: Scarabaeidae: Dynastinae: Phileurini) is known from Ecuador to Argentina. In this work, the third instar is described and illustrated based on specimens from Argentina. Notes on its natural history are included, and a key to the known third instars of New World Phileurini species is provided.

Coelomera atrocaerulea is reduced to a synonym of Monocesta depressa , new synonymy. This species is transferred to Platycesta Viswajyothi and Clark, new genus, as Platycesta depressa (Clark), new combination. The distribution is from Honduras to Peru. Details of geographic color variation are presented.

An effort to identify a series of Pachybrachis Chevrolat, 1836 specimens from an eastern USA nature preserve led to the study of five western USA species: Pachybrachis alticola Fall, Pachybrachis conspirator Fall, Pachybrachis laevis Bowditch, Pachybrachis mercurialis Fall, and Pachybrachis nubilus Bowditch. Pachybrachis mercurialis is synonymized under P. laevis (new synonymy), and P. conspirator is synonymized under P. nubilus (new synonymy). The known range of P. laevis was extended 1,000 miles eastward. Descriptions, figures, and range maps are presented for each species.

Specimens of Piazorhinus from Arizona and New Mexico, previously considered Piazorhinus scutellaris (Say, 1826), are here described as Piazorhinus caeloinsularis Hespenheide, new species. The new species is distinguished from P. scutellaris, and genitalia of both species are illustrated. New distribution records of P. scutellaris are given. Similar Central American species are also briefly discussed and distinguished.

Based on the examination of recently available holotypes, the status of the following species of Erodiscini (Coleoptera: Curculionidae: Curculioninae) described in the genus Erodiscus Schoenherr, 1825 by the late Elbert L. Sleeper are each resolved. Erodiscus hamburgi is valid as Sicoderus hamburgi (); Erodiscus marshalli is a junior subjective synonym of Sicoderus granatensis (), new synonymy; Erodiscus panamensis is valid as Sicoderus panamensis (), new combination; and Erodiscus sharpi is valid as Pimelerodius sharpi (). Some comments about deposition of holotypes in personal collections are included.