Archicorynus Anderson and Marvaldi, new genus, and its type species, Archicorynus kuscheli Anderson and Marvaldi, new species, are described from Reserva Natural Cerro Musún, Nicaragua. Adults were collected from small dead twigs. A cladistic analysis of 71 adult morphological and three biological characters identified Archicorynus as the sister group to all remaining extant Oxycoryninae, necessitating recognition of a new tribe, Archicorynini Anderson and Marvaldi.

A new species of the genus Nosodendron Latreille, 1804 (Nosodendridae), Nosodendron carolinense Yoshitomi, new species, is described from Dublon Island in the Chuuk Atoll of the Caroline Islands. The species is similar to Nosodendron prudeki Háva, 2000 known from southern Thailand, but differs by body size, punctation of the mentum, and shape of aedeagus. This is the first record of the family from Micronesia.

As part of an ongoing survey to determine the geographic distribution of Euhrychiopsis lecontei (Dietz) in California water systems, three aquatic species from two subfamilies of Curculionidae were found associated with two species of water milfoil. An accounting of weevils associated with water milfoil is provided, as well as a brief synopsis of E. lecontei as a biological control agent, a detailed distribution map for E. lecontei in California, and diagnostic characters to distinguish E. lecontei from other aquatic and semi-aquatic weevils.

The West Indian Chrysobothris thoracica species-group is defined to include Chrysobothris thoracica (F., 1798), Chrysobothris hispaniolae Fisher, 1925, Chrysobothris guadeloupensis Descarpentries, 1981, Chrysobothris sabae Maier and Ivie, new species (Saba), and Chrysobothris marskeae Maier and Ivie, new species (Montserrat). New records of C. thoracica from Anguilla and several of the Virgin Islands are reported. These rarely collected species are defined, keyed, and illustrated.

Descriptions and illustrations of the fifth instars of Onichodon canadensis (Brown, 1940), Onichodon orchesides Newman, 1838, and Onichodon rugicollis (Fall, 1928) (Coleoptera: Eucnemidae: Macraulacinae: Macraulacini), all endemic in the Nearctic region, are given. These are the first larval descriptions for the genus Onichodon Newman, 1838. The descriptions are based on larvae collected from pieces of rotten wood. Adults for one of the three species were reared from those pieces placed in plastic bags and associated with preserved larvae found earlier in the field. Identity of O. rugicollis larvae were verified through a comparative study with larval exuviae from a previous project. Biological information is provided and larval morphology is briefly discussed among O. canadensis, O. orchesides, O. rugicollis, and other previously described larvae in other genera.

Recommendations are provided for best writing and curatorial practices for describing a new species of beetle. These hallmarks of professionalism include constant adherence to the International Code of Zoological Nomenclature, defining the species concept used, correct grammar and punctuation used in formulating telegraphic species descriptions, curatorial practices for labeling type specimens, describing the holotype and then the variation of any paratypes as opposed to a single description for all of the syntypes, providing an etymology for the specific epithet, and the all-important diagnosis for the new taxon, and the possibilities of having the new species name entered into several widely used scientific databases or indices to increase awareness of the new taxon.

The Malagasy endemic genus Nesiotus Guillebeau is revised. Seven species are recognized, including six newly described herein: Nesiotus basalis Gimmel, new species, Nesiotus fisheri Gimmel, new species, Nesiotus joebranhami Gimmel, new species, Nesiotus nocitus Gimmel, new species, Nesiotus ocularis Gimmel, new species, and Nesiotus steineri Gimmel, new species. All species are illustrated, distributions mapped, and a key is provided. A checklist of described Malagasy Phalacridae is also given.

One hundred fifty-one species of Cerambycidae are recorded from Montana, an increase of 55 in the published literature. Distribution within Montana is reported by county, with 1,156 individual county records. The Chao 1 estimator mean predicts another 29 species remain to be discovered in the state.

Wood borers (Coleoptera: Cerambycidae and Buprestidae) and bark beetles (Coleoptera: Curculionidae) infest ponderosa pines, Pinus ponderosa P. Lawson and C. Lawson, killed by mountain pine beetle (MPB), Dendroctonus ponderosae Hopkins, and fire. No data is available comparing wood borer and bark beetle densities or species guilds associated with MPB-killed or fire-killed trees from the Black Hills of South Dakota, USA. We compared species assemblages of wood borers (Cerambycidae and Buprestidae) and bark beetles (Dendroctonus spp. and Ips spp. (Coleoptera: Curculionidae)) emerging from bolts collected from trees that had been killed by MPB or fire one or two years prior to harvesting. Significantly more wood borers emerged from bolts of fire-killed trees than from bolts of MPB-killed trees. Wood borer density in fire-killed trees was 13.8 per m2, compared to 4.4 per m2 in MPB-killed trees. Six wood borer species, Acanthocinus obliquus (LeConte), Buprestis consularis Gory, Chrysobothris sp., Melanophila acuminata (De Geer), Monochamus clamator LeConte, and Phaenops gentilis (LeConte), emerged from fire-killed tree bolts. Four species of wood borers, A. obliquus, Rhagium inquisitor (L.), Tetropium cinnamopterum Kirby, and Xylotrechus longitarsis Casey, emerged from MPB-killed tree bolts. Acanthocinus obliquus was the only species that emerged from both MPB-killed and fire-killed tree bolts. The bark beetles D. ponderosae, Dendroctonus Valens LeConte, Ips knausi Swaine, and Ips pini (Say) emerged from one-year-old, MPB-killed trees, while I. pini was the only species that emerged from a fire-killed tree.

A Late Pleistocene twig, LACMP23-3464, of Juniperus L. from the La Brea Tar Pits in Los Angeles, California, displays identifiable coleopteran trace fossils of both Phloeosinus Chapuis (Curculionidae: Scolytinae) and Buprestidae. These subcortical engravings are an unusual association of two identifiable tracemakers on wood that can be identified to genus. These insect galleries resemble colonization by extant scolytines and buprestids on trees weakened by environmental stresses such as drought, fire, intense vegetational competition, or changes in the water table. It seems likely that a similar form of environmental stress also weakened the Juniperus tree from which the specimen originated. A rib of Camelops hesternus Leidy from the same asphaltic layer in this deposit has been dated at 42,600 radiocarbon years BP, providing a provisional date for the juniper twig. This twig represents a valuable contribution to the scarce fossil record of insect damage to wood in that it is the first record of Phloeosinus fossil galleries in juniper, and the first record of Buprestidae galleries from the Pleistocene epoch.

The nesting behavior of Onthophagus incensus Say under controlled laboratory conditions is described. Pre-nesting lasted 45–60 days for laboratory-reared and 10–60 days for field-collected adults. Nesting period lasted 45 ± 23 days for laboratory-reared adults and 26 ± 10 days for field-collected adults. Volume and weight of the brood-masses were 7.23 ± 2.82 cm and 5.54 ± 2.03 g, respectively. Pairs of beetles built compound nests, and the quantity of food provided by the parents did not significantly influence the size of the offspring.

Three species of Phyllophaga s. str. Harris from the Mexican state of Puebla are described: Phyllophaga aragoni Morón, new species, from pine-oak forest on the southwestern slope of Popocatépetl volcano; Phyllophaga buapae Moron, new species, from mixed temperate forest near Zacatlán; and Phyllophaga cazahuata Morón, new species, from mixed forests of Sierra del Tentzo. Drawings of diagnostic structures and comments about the similarities of each species with other species in the subgenus are provided.

The horned passalus, Odontotaenius disjunctus (Illiger), is host to a variety of parasites, including a little-studied nematode, Chondronema passali (Leidy), that can number in the thousands in a single beetle. We attempted to determine the effects of this parasite on two measures of host fitness, physical strength and body size of adult beetles collected from hardwood logs at two sites in Georgia, USA. For a subset of the beetles, we measured their individual pulling strength using a dynamometer and data-logging apparatus. We also recorded the live weight of all beetles and from another subset a composite measure of body size based on digital images. Beetles were dissected and nematode infection status was assessed for all beetles. Of all beetles examined in this study (49 females, 44 males), we detected C. passali in 63 (67.7%) individuals. Prevalence in males did not differ from females. Infections ranged from 10 to over 1,000 individual nematode larvae per beetle. There was no significant effect of infection on maximum pulling force after accounting for body size and gender. Beetles with nematode infections weighed significantly more than those without nematodes and were significantly larger in body size. These results suggest the effects of this parasite are minimal to the host, and infections may even confer an advantage via the increase in size. Based on a review of the relevant literature, this appears to be a rare phenomenon among the many insect-nematode parasite relationships.

A new species of the genus Microtrachelizus Senna, Microtrachelizus platycephalus Mantilleri, new species, is described from Sumatra (Indonesia) and illustrated. It is compared to Microtrachelizus macrophthalmus Mantilleri.

Morphometric analysis was performed on the oil palm pest Oryctes rhinoceros (L.) as part of a study to determine the possibility of a cryptic species complex occurring in this organism. Six beetle populations, each with a sample of 30 individuals, were examined. The morphometric variables measured were total body length, elytral length, pronotal length, pronotal width, and length of the cephalic horn. Principal component analysis and canonical discriminant analysis indicated no distinct discontinuity or clustering of populations. The morphology of individuals from different populations was observed to overlap on one another. These results indicate that O. rhinoceros show stability in morphometric character variance across a wide geographical range.