The carabid beetle fauna of Lanai includes nine native Hawaiian species, and four extralimital alien species. The three species of Mecyclothorax Sharp precinctive to Lanai—M. filipes (Sharp), M. mundanus (Sharp), and M. flavipes, new species—are taxonomically revised. Lanai non-native carabid species include Metacolpodes buchanani (Hope) (new island record), Gnathaphanus picipes (MacLeay), G. multipunctatus (MacLeay) (new island record), and Perigona nigriceps (Dejean) (new island record). A key to species of Harpalini introduced to the Hawaiian Islands is provided. Historical records of native Lanai carabid species indicate that they occurred in both summit cloud forest and in riparian corridors of the mesic and dry forest communities. Present-day records indicate restriction of these species solely to the cloud forest zone. The known historical diminution of summit cloud forest establishes a minimum area that has supported persistent populations for several of Lanai's native carabid taxa. Three of the four alien species have been recorded from cloud and mesic forest communities as well as lowland dry forest not known to support native carabid beetles. Currently, native and non-native species exhibit extensive distributional overlap. However, based on fine-scale, field-collection data, this geographic sympatry overstates the extent of ecological interactions between native and non-native taxa. Whereas native species occur in the cloud forest community, non-native species are more broadly distributed in anthropogenically-disturbed situations including the ecologically devastated dry forest community as well as smaller patches of disturbance within the native cloud forest.

False wireworms are larvae of the darkling beetle genus Eleodes Eschscholtz, some of which are agricultural pests of dryland wheat. Because of the large number of species in the genus (approximately 235), identifications can be problematic. Hence, regional keys are of great utility. Within the state of Texas a total of 31 species are known to occur: E. acutus, E. arcuatus, E. carbonarius, E. caudiferus, E. debilis, E. delicatus, E. dissimilis, E. easterlai, E. extricatus, E. fusiformis, E. goryi, E. gracilis, E. hispilabris, E. knullorum, E. labialis, E. longicollis, E. mirabilis, E. neomexicanus, E. nigrinus, E. obscurus, E. opacus, E. pedinoides, E. spiculiferus, E. spinipes, E. sponsus, E. striolatus, E. suturalis, E. tenuipes, E. tricostatus, E. veterator, and E. wenzeli. Herein we provide a key with illustrations and a brief diagnosis for the adult of each Texas species, along with notes on ecology, distribution, and pest status.

Based on the examination of the type series of both Apogonia niponica Lewis, 1895 and Apogonia chinensis Moser, 1918, the type locality of the former species is clarified and its geographic distribution is extended by proposing A. chinensis as a junior subjective synonym of A. niponica. All previous records of A. niponica from Taiwan should refer to A. rufobrunnea Moser, 1915.

The life history of Pericoptus truncatus (Fabr.) from New Zealand is reviewed, and a modern description of the third instar is provided. Larvae of P. truncatus live just beyond oceanic high tide under and within well anchored driftwood and beneath beach sand, where they feed on rotting wood or plant roots. The larvae are remarkable for their large, spatulate claws, which aid them in traveling through the sand as well as on the surface during nocturnal surface migrations between the backshore and the foredune area, presumably to feed on plant roots and find sand with water content high enough to allay desiccation.

The species of the genus Cerophysa Chevrolat known from Taiwan are reviewed. Hoplosaenidea chujoi Kimoto, 1966, H. nigripennis Kimoto, 1966, and H. taiwana (Chûjô 1935) are transferred to Cerophysa and redescribed. Male and female genitalia are illustrated for each species. A key to the species of Cerophysa in Taiwan is provided.

Pachybrachis Chevrolat (Coleoptera: Chrysomelidae) is a very large and complex genus of small leaf beetles with >150 species in the United States. Pachybrachis nigricornis carbonarius Haldeman is an entirely (or nearly entirely) black subspecies that is relatively common in Kentucky. Abundance and distribution records for 288 specimens collected in Kentucky are presented. Adults were found feeding on two species of legumes (Fabales: Fabaceae: Papilionoideae) over 230 km apart in Kentucky: on Desmodium paniculatum L. DC in Henry County and on Lespedeza virginica (L.) Britton in Logan County. No-choice feeding trials using female beetles and six species of legumes revealed significant leaf disk consumption after 50 hrs on all plant species. Females with narrow lateral yellow markings on the elytra were significantly larger in body size than all-black females and consumed more leaf area. The yellow-margined females appear to represent a transitional form between two previously recognized subspecies, suggesting that the current subspecies taxonomy for P. nigricornis (Say) needs re-evaluation.

Adalia bipunctata (L.), Coccinella transversoguttata richardsoni Brown, and C. novemnotata Herbst (Coleoptera: Coccinellidae) were previously common throughout much of North America, but their numbers have declined drastically over the last few decades. This paper reports on recent findings of these species at nine sites in western South Dakota and western Nebraska in 2008. Nine A. bipunctata, 11 C. transversoguttata richardsoni, and 12 C. novemnotata were among 930 coccinellids sampled overall. An additional C. transversoguttata richardsoni was among coccinellids captured on a sticky trap in a wheat field during survey for cereal leaf beetle, Oulema melanopus (L.), in Butte, County, South Dakota in 2000. In several instances, adult C. transversoguttata richardsoni and C. novemnotata were observed on plants with other coccinellids, especially Hippodamia convergens Guérin-Méneville, a native species, and Coccinella septempunctata L., a non-native species. Coccinella septempunctata was observed feeding upon two native aphids, Aphis helianthi Monell and Uroleucon atripes (Gillette and Palmer), providing additional records of predation by this coccinellid on non-target, native prey. Results are discussed with respect to other recent discoveries of A. bipunctata, C. transversoguttata richardsoni, and C. novemnotata and in relation to future research and conservation efforts.

The morphology and histology of the alimentary canal of the Chinese white pine beetle, Dendroctonus armandi Tsai and Li, were studied by means of light and electron microscopy. The general bauplan is described and illustrated in detail. Although many structures are found to be similar to those reported for other Dendroctonus Erichson species, some differences are apparent, such as the peritrophic membrane surrounding the food bolus, the absence of fine spines on the hindgut cuticle, and the presence of specialized proventricular plates.

Macrodactylus howdeni, new species, from pine-oak forest at 2,600 m elevation near Toluca, state of México, and Macrodactylus noveloi, new species, from cloud forest at 1,050 m elevation in the state of Michoacán and oak forests at 780–1,160 m elevation in the state of Nayarit, Mexico are described. Illustrations of diagnostic characters and comparative comments with similar species are included. New records are provided for Macrodactylus submarginatus Bates for the state of Michoacán, Macrodactylus pokornyanus Arce-Pérez and Morón for the state of México, and Macrodactylus longicollis (Latreille) for the state of Oaxaca. With these additions, 27 species of Macrodactylus Dejean are recorded from Mexico.

Toxicum funginum Lewis, 1894 (Coleoptera: Tenebrionidae) is a medium-sized, horned species that lives in Japan and Taiwan and feeds on bracket fungi. Intraspecific behavioral interactions among adults were examined in the laboratory. Males engaged in combat with other males using paired horns located between their compound eyes. The contact surfaces of the horns bore curled brown hair, possibly to absorb physical impact. Larger males with longer horns won more frequently than smaller individuals with shorter horns. Smaller males rarely engaged in combat. Females pushed away approaching males violently with their heads.