Two new species of the myrmecophilous histerid genus Chlamydopsis Westwood are described. One, C. doutti Caterino, new species, belongs to the C. epipleuralis group, and is closely related to C. convexa Caterino. The close relatives of this species all occur in temperate areas in southeastern Australia, while C. doutti is known only from a single locality in central Queensland. The other species, C. chadster Caterino, new species, represents the third true Chlamydopsis known from New Guinea. It is known only from the type locality on Japen Island, off the northwest coast of Papua, Indonesia, and is not obviously related to the other two New Guinean Chlamydopsis.

Habitus photographs of holotypes and syntypes of Buprestidae (Coleoptera) in the Fernando de Zayas Collection, Havana, Cuba, are presented. Notes on the identities of the species are given. Peronaemis viridithorax Zayas 1988 is synonymized with Peronaemis monticola Fisher 1936.

Arawakis poinari , new genus, new species, is described from Dominican Amber. The visible anatomical components of the fossil clearly point to membership in the subfamily Clerinae. Although the elongated condition of the eleventh antennomere present in Arawakis suggests a relationship with the African genus Phloiocopus, the presence of this characteristic across subfamilial lines diminishes that consideration. On the basis of arrangement of elytral punctations and maxillary and tarsal-claw characteristics, the members of A. poinari are thought to be more evolutionarily aligned with a group of Chilean genera exemplified by Natalis, and less likely to the Holarctic genus Thanasimus. The absence of closely related species of A. poinari, in the Greater Antilles and Central America may be due to geographic extinctions caused by widespread cooling during the Plio-Pleistocene, or a consequence of the Cretaceous Bolide impact in Yucatán. The difficult to access historical literature that pertains to Cleridae fossils listed by Spahr are reviewed and the nomenclatural status of taxonomic names noted therein are assessed. A variety of citations are provided that discuss the importance of amber fossils to studies of insect systematics and discuss technologies involved in estimations of the age of Dominican and Baltic amber, and other resinous fossils.

The Nearctic species of Brychius Thomson, 1859 (Coleoptera: Haliplidae) were revised by examining adult and larval specimens. Brychius albertanus Carr 1928 is a junior subjective synonym of Brychius hornii Crotch 1873. Descriptions of adults and larvae (excluding B. pacificus), distribution data, and a key to adults are provided for all Nearctic species. From a reconstructed phylogeny of all species of Brychius, B. hornii B. hungerfordi is the sister-group to Brychius elevatus Panzer 1794 Brychius glabratus Villa 1833; and these combined are the sister group to Brychius pacificus Carr, 1928. Species of Brychius are hypothesized to have arisen and diversified on Laurasia during the Jurassic Period. Brychius hornii and B. hungerfordi originated in the Tertiary Period before the formation of the Rocky Mountains, ca. 50 to 100 million years ago. It is thought that vicariance has played an important role in the present distribution, where species were once widespread in cool mountainous glacial streams, then became restricted to geographically isolated regions with the retreat of the glaciers and the extinction of intervening populations.

We report numerous staphylinid species as new to California: Coproporus rutilus (Erichson), C. pulchellus (Erichson), Atrecus newtoni Smetana, Acalophaena compacta Casey, Gymnusa pseudovariegata Klimaszewski, Hoplandria lateralis (Melsheimer), Microdonia nitidiventris (Brues), Dinocoryna arizonensis Seevers and Pella caliginosa (Casey). We report several genera as new to the state, though species identifications have not been possible: Bolitobius sp., Cypha sp., Anomognathus sp., Euthorax sp. and Meronera sp. Finally, we provide additional distributional records for several rare or poorly known species, including Dasycerus angulicollis Horn, Liometoxenus newtonarum Kistner, Jacobson and Jensen, Pella fauveli Sharp, and Platyusa sonomae (Casey).

Sexual size dimorphism was quantified for a population of the diving beetle Laccophilus maculosus Say in Northern Ontario, Canada. Consistent with other populations of this species, but in contrast to the general pattern in insects, males were significantly larger than females in terms of body length, elytral length, and pronotal width. There was a significant multivariate difference in body size between the sexes, and discriminant function analysis identified 68.87% of individuals as the correct sex based on measurements of body size. Males also had significantly longer femora, longer tibiae, and larger tarsi on the pro- and mesothoracic legs.

The recently described buprestid genus Petersonia Hawkeswood, 2007 is proposed as a new subjective junior synonym of the large Australasian genus Castiarina Gory & Laporte, 1838. A brief discussion about male antennal modifications in Buprestidae is given. A list of criteria and considerations on erecting genus-group names from an earlier paper by Holm & Schoeman (1999) is repeated verbatim.

A new species of May beetle from the United States, Phyllophaga nebulosa, new species, is described from the North Carolina Cape Fear River Basin. This species is part of the P. fraterna species complex and is recognized by the distinctive male and female genitalia.

We investigated the dung beetle Geotrupes (Halffterius) rufoclavatus Jekel on the eastern slope of the Cofre de Perote Volcano, Veracruz, Mexico, with monthly trapping samples taken during the years 1999 to 2001. Monthly beetle abundances were related to habitat and collection period. The distributions of geotrupinae species on the Cofre de Perote are mapped, providing new data on geographical distribution in the State of Veracruz. The highest quantities of G. rufoclavatus were collected in the forest habitat. Above 3,000 m, more adults were collected in pastures and cultivated fields, showing a single activity peak per year, whereas at lower altitudes, there were lower numbers in those habitats, but several activity peaks per year. In Tonalaco, Veracruz, monthly samples were taken during 2005–2006 to assess the reproductive state of the population. Male and female reproductive systems are similar to those of other geotrupine species. All adults collected were in a maturing state; one female collected in February was ready to oviposit.

Synolabus Jekel, traditionally treated as a subgenus of Attelabus Linnaeus is shown to deserve full generic status. It is restricted to North America and it is closely related to other American genera of the Euscelini. Attelabus and Phialodes Roelofs form the tribe Attelabini sensu stricto which is palearctic in distribution. The Attelabini s.s. are together with the Pilolabini the most basal tribes of the Attelabinae. Characters of the mouthparts, the prosternum and the female genitals are illustrated and discussed to substantiate the taxonomic decisions.

The brassica leaf beetle Phaedon brassicae Baly, one of the pests of cruciferous vegetables in China and Japan, is a multivoltine species that over-winters and over-summers mainly as diapausing adults. In this paper, the internal reproductive system is described and illustrated for this species. Its morphology associated with diapause is also described. The accessory glands, lateral ejaculatory duct, common ejaculatory duct and ejaculatory sac are poorly developed in diapausing male, in contrast, these are obvious and swollen in the reproductive male. In the diapausing female, no obvious previtellogenic oocytes can be found in the ovariole. The ovarioles contain numerous previtellogenic oocytes, and the basal oocytes have visible yolk uptake in the reproductive female. In addition, the fat bodies are numerous and dark yellow in color for diapausing adults, but few and light yellow in color for reproductive adults.

Megaceras briansaltini Ratcliffe, new species, is described from Peru. A description, diagnosis, and illustrations are provided, and the new species is compared with M. morpheus Burmeister, with which it shares similarities.

Sambomorpha corona, new species, is described from Puntarenas Province, Costa Rica and S. panama, new species, is described from the Llano-Cartí Road in eastern Panamá. Both species are compared to S. costarica Bellamy, 1997 and illustrated.

A new species of endomychid, Stenotarsus nigrivestis Shockley, is described from the Dominican Republic, representing the first description of a species of Stenotarsinae from the West Indies. A summary of the known West Indian Endomychidae is provided.