A key to the species of the Curculio subfenestratus Voss group of the genus Curculio of China and descriptions of new taxa are presented. The following new taxa are described: C. artusfrons new species, C. balmeri new species, C. brittanyae new species, C. carlae new species, C. challeti new species, C. coartorostrus new species, C. congerae new species, C. fordi new species, C. gangkuensis new species, C. gansuensis new species, C. helleri new species, C. janetteae new species, C. luteusvittus new species, C. obrieni new species, C. polki new species, C. sleeperi new species, and C. tarae new species. Short reviews of the following previously described taxa are included: C. aino (Kono), C. albisquama Ter-Minassian, C. breviscapus (Heller), C. conjugalis (Faust), C. convexus (Roelofs), C. flavoscutellatus (Roelofs), C. funebris (Roelofs), C. ignobilis (Heller), C. interpositus Voss, C. klapperichi Voss, C. lobatibasis Voss, C. maculanigra (Roelofs), C. misellus (Heller), C. notobifasciatus Pajni and Singh, and C. subfenestratus Voss. Type specimens are deposited in the Institute of Zoology, Academia Sinica, Beijing, China, California Academy of Sciences, San Francisco, California, Bernice P. Bishop Museum, Honolulu, Hawaii, Charles W. O'Brien, Tallahassee, Florida and Frank W. Pelsue Collections.

Publication funded in part by the Coleopterists Society Foundation.

The first descriptions of the larval and pupal stages of Cryptorhopalum triste LeConte (Coleoptera: Dermestidae) are presented. A diagnosis is provided for the larval form of Cryptorhopalum Guérin-Méneville. The first instance of rearing this species in captivity is documented. Corn Salad, Valerianella radiata (L.) (Valerianaceae), Cat's-ear, Hypochoeris radicata L. (Asteraceae), Senecio sp. (Asteraceae), and Queen Anne's lace, Anthriscus sylvestris (L.) (Apiaceae), are new adult floral hosts. Adults widely occur in disturbed habitats in Northern Georgia in April through October.

Illustrated descriptions of larvae, pupae and adult genitalia are provided for Eugenysa columbiana (Boheman) in Costa Rica. These represent the first such descriptions for the tribe Eugenysini. Females are reported as exhibiting guarding of larvae and pupae. Male presence with the female and larval group is also described. The distribution range is extended to Peru, and host plant data is recorded. A new character from the spermatheca is presented and its potential usefulness in deducing eugenysine relationships is discussed.

This contribution reports on the discovery of Calleida migratoria Casale, new species, a ground beetle previously unknown to the Galápagos Islands. Since the recent and very strong 1997–98 El Niño event we have found this species on five of the Galápagos Islands: Isabela, Pinta, Santa Cruz, Santiago and Rabida. The species is also known from Peru and its presence in Galápagos is therefore most probably another anthropogenic introduction which has taken advantage of the unusually favourable climatic circumstances of the last El Niño. Calleida migratoria is described and a provisional identification key is added to distinguish the new taxon from its closest relatives.

The flea beetle, Pseudolampsis guttata (LeConte) (Coleoptera: Chrysomelidae) was assessed for release on the South American fern, Azolla filiculoides Lamarck (Pteridophyta: Azollaceae) which is invasive in aquatic ecosystems in South Africa. Favourable biological characteristics of the beetle include: long-lived and mobile adults, short generation time, high rate of increase and high per capita feeding rates. However, laboratory host specificity trials indicated that this beetle is an oligophagous species capable of utilizing several species in the genus Azolla and could pose a threat to native southern African Azolla species. Pseudolampsis guttata was therefore considered unsuitable for release in South Africa.

The reproductive development of the eucalypt-defoliating beetles Chrysophtharta agricola (Chapuis) and C. bimaculata (Olivier) (Coleoptera: Chrysomelidae) was examined by dissecting male and female teneral, overwintering, and reproductive adults. Both species had morphologically similar reproductive systems, except that C. agricola females had more, but significantly smaller, ovarioles and C. agricola males had more testis follicles and significantly larger testes than C. bimaculata. In both species, females had ciliated lateral and common oviducts and no accessory glands. The male aedeagus of both species underwent approximately 180° longitudinal rotation during adult maturation. Both species had consistent integument and haemolymph colour changes from overwintering to reproductive maturity. Twenty percent of female C. agricola, but no C. bimaculata, had mated prior to overwintering. The rate of post-overwintering reproductive development of female and male C. bimaculata was examined at six temperatures.

This paper describes the morphology and histology of the adult digestive system of Cephalodesmius armiger Westwood (Scarabaeini), a beetle that manufactures compost out of plant matter. This species' digestive system is compared to those of genera Phanaeus, Coprophanaeus and Copris (Coprini), that feed on vertebrate dung. The major finding reported in this study is that C. armiger has a sac-like colon, a structure similar to the fermentation chamber of phytophagous beetles, not found in other Scarabaeinae.

Four species of Anthonomini from western North America are assigned to the genus Magdalinops Dietz: M. vittipennis Dietz from California, the type species; M. knowltoni, new species, from Utah; M. falli, new species, from California, Nevada, Oregon and Wyoming; and M. alutaceus (Hatch), new combination, transferred from Epimechus Dietz, from British Columbia, California, Colorado, Idaho, Montana, North Dakota, Oregon, Utah, Washington and Wyoming. The species of Magdalinops are distinguished by the shining, glabrous basal segment of the compact, ovoid antennal club and by narrowly separated mesocoxae. Adults of these species have been collected on plants in either Artemisia or Chrysothamnus (Asteraceae). Two species of Anthonomini, also from western North America, are assigned to Chelonychus Dietz: C. longipes Dietz, the type species, and C. stragulus (Fall), new combination, transferred from Epimechus. The species of Chelonychus are distinguished from other anthonomines by the long, slender, strongly flexed tarsal claws. Adults of one of the species have been collected on Artemesia ludoviciana Nutt. (Asteraceae). Shared possession of exceptionally long, slender tarsal claws by species of Chelonychus and some species of Magdalinops, and common association with Artemesia are indications that the two weevil genera are closely related.

Procoilodes adrastus Ocampo (Coleoptera: Scarabaeoidea: Hybosoridae), a new genus and species of fossil hybosorid, is described from the Dominican Republic. The fossil is embedded in amber resin of Hymenaea protera Poinar (Leguminosae) and dates from the Miocene.

We describe for the first time immature stages of the Scymnus subgenus Neopullus; namely the egg, larval (4 instars), and pupal stages of Scymnus (Neopullus) sinuanodulus Yu and Yao (Coleoptera: Coccinellidae), which is indigenous to China. This lady beetle was imported to the USA for biological control of the hemlock wooly adelgid, Adelges tsugae Annand (Hemiptera: Adelgidae), a serious pest of hemlocks in eastern North America. The egg's anterior pole has a rosette of 4–11 cup-shaped and 13–20 semi-circular structures that are likely micropyles. Unlike the subgenera Scymnus and Pullus, a Neopullus larva lacks a retinaculum on its mandibles but has, in common, the antennae with 3 distinct segments, the maxillary palpi with 3 segments, and the labial palpi with 2 segments. The pupa is naked with transparent viscous droplets on the tips of setae and the larval exuvium attached only to the last abdominal segment. We also annotate morphological development and behavior of feeding, oviposition, and defense. Both larvae and adults of this small lady beetle exhibit defensive reflex bleeding of orange viscous droplets: the larva from thoracic tubercles and the adult from the femorotibial joints.

A key to all 14 species of Aristochroa Tschitschérine is provided with a description of A. zhongdianensis new species, from Yunnan, China. The new species is similar to A. deuvi Xie and Yu 1993 with the same conformation of elytral intervals 1, 3 and 5, but differs by smooth vertex, proepisterna, metepisterna, and inner basal fovea of pronotum (all punctate in A. deuvi). The new species is also similar to A. balangensis Xie and Yu 1993 with smooth proepisterna and narrow elytral intervals 1, 3 and 5, but differs from it in having the prosternum not longitudinally depressed, frontal furrows of head and outer basal fovea of pronotum punctate, and elytral interval 5 ended near sub-apical margin. The symmetric apical lamella of aedeagus in dorsal view in the new species differs from bent ones in A. deuvi and A. balangensis. Type specimens are deposited in the Institute of Zoology, Chinese Academy of Sciences, Beijing, China.

Two new species of Cyclocephala from Central America are described and diagnosed: C. abrelata Ratcliffe and Cave from northern Honduras and C. melolonthida Ratcliffe and Cave from southern El Salvador.