The larva of third instar and pupa of Ceratocanthus relucens (Bates) obtained near Xalapa, Veracruz, México, are described. Drawings of diagnostic structures, a brief key to the known third instar larvae of American Ceratocanthinae, and comparative comments with immature stages of Germarostes aphodioides (Illiger) from United States and G. macleayi (Perty) from Brazil, are included.

Description of larvae of Allomatus nannup Watts is presented including a detailed chaetotaxic analysis of the cephalic capsule, head appendages, legs, last abdominal segment and urogomphi. Larvae of A. nannup are compared with those of the closely related species, Batrachomatus daemeli (Sharp) from which it differs by: (1) the lack of additional setae on the parietale, (2) the primary seta CO7 inserted distally on the procoxa, (3) the absence of additional pores and (4) the proximal insertion of the primary pore ANg on antennomere 4, and (5) the presence of several additional spines on each segment of legs. Within the Matinae, both Batrachomatus and Allomatus are postulated to share a monophyletic origin by the presence a several additional primary setae on legs.

Over hundred years have passed since Syntelia davidis Fairmaire, 1889, was reported from China (Moupin, now called Baoxing), but it was neglected and not included in any subsequent works treating the beetle fauna of China. This paper reports the rediscovery of the family Synteliidae in China and describes two species, Syntelia sinica Zhou, new species, and S. mazuri Zhou, new species, based on specimens collected in Sichuan province. Taxonomic history and current status of this beetle family are briefly reviewed, and a key to Asian species is given. Type specimens are deposited in Institute of Zoology, Academia Sinica.

The genus Tiphysa Mulsant, 1850 is revised and illustrations of pertinent characters are provided. This genus is transferred from Hyperaspidini to Brachiacanthini.

Adults and larvae of the loberine erotylid beetle Loberus impressus (LeConte) were found associated with fungi growing on corolla and seed capsule tissue of the blue flag iris, Iris hexagona. We examined adult beetle specimens using light and scanning electron microscopy to determine if specialized structures (mycangia) may function in transporting fungi. Two pairs of deep pits on the ventral aspect of the gena between the eyes and the maxillae of both sexes contained fungal spores and hyphae, suggesting a possible role as mycangia in addition to their role as glandular outlets. Inoculation from the surface of cleaned beetle specimens produced colonies of Cladosporium and Fusarium. These genera are widespread, usually air-dispersed conidial fungi that sometimes are associated with insects.

The third instar larvae of Xyloryctes furcatus Burmeister from Hidalgo, México and X. lobicollis Burmeister from Chiapas, México, are described. Drawings of diagnostic structures and a key to the third stage larvae of Xyloryctes jamaicensis (Drury), X. thestalus Bates, X. furcatus and X. lobicollis, are included.

The adult morphology of Meibomeus cyanipennis (Sharp) is described and illustrated. Structures such as the tentorium, mouthparts, endosternites, hind wings and female terminalia were studied for the first time in the genus.

A key to 19 species of the Curculio sikkimensis (Heller) group of Curculio from China is provided with descriptions of the following new taxa: Curculio brevidens new species, Curculio bullabrevis new species, Curculio careoparvus new species, Curculio dijoui new species, Curculio hobbsi new species, Curculio lyali new species, Curculio megadens new species, Curculio mullai new species, Curculio nigra new species, Curculio pascoei new species, Curculio penteri new species, Curculio songi new species, Curculio wangi new species, Curculio zangi new species. Brief reviews are provided for Curculio c-album Fabricius, Curculio hippophes Zhang, Curculio hsifanus (Heller) Curculio pylzovi (Smirnov), and Curculio sikkimensis (Heller). Types are deposited in the Institute of Zoology, Academia Sinica, Beijing, China, The Natural History Museum, London, United Kingdom and the California Academia of Sciences, San Francisco, California, U.S.A.

The following new species of Hemiphileurus are described: H. cavei Ratcliffe from Honduras and H. dechambrei Ratcliffe from Guatemala. A diagnosis is given for each species, and the parameres are illustrated for these and similar species.

The mature larva and pupa of Tomoxia lineella LeConte are described and illustrated based on specimens collected and reared from a standing large-toothed aspen (Populus grandidentata Michaux) in a northern-mixed forest element in south-central Wisconsin. Larvae were collected on 30 March 2001 and 23 April 2001 from tunnels approximately two cm under the bark in the wood of the south-facing side of the tree. Tomoxia lineella was previously unrecorded from Wisconsin.

Two new species of Lechriops are described from Arizona: L. variegatus n. sp. and L. chiricahuae n. sp. Lechriops oblongulus Champion, previously described from Durango, México, is recorded for the first time from Arizona and is redescribed. These three species and L. californicus (LeConte) are associated with pines and Douglas fir and constitute the californicus group. A revision of Sleeper's (1963) key is given to separate the species of Lechriops in the United States and male genitalia are illustrated for the four species and for L. oculatus (Say). Other undescribed species in the californicus group are known from México to Honduras.

The rare phanaeine dung beetle Phanaeus alvarengai Arnaud 1984 was described from two specimens. Several recent collections of this species are reported here, along with behavioral observations; this new material is a basis for amending earlier descriptions of P. alvarengai. Flight-activity period was recorded as near sunrise for no more than 10 minutes and diet preference appeared to be herbivore dung. Dung-burial behavior was similar to the congeners P. chalcomelas (Perty) and P. cambeforti Arnaud.