Based on specimens captured in B-horizon calcareous soils the new species Parareicheia lencinai Ortuño and Magrini (type locality: Caserío de Bernia, Xaló, Alicante Province, Spain) is described and its morphological features compared with the most closely related species. The subgenus Parareicheia Jeannel is raised to genus level (new status) to which it is assigned.

The trechine carabid species Iberotrechus bolivari (Jeannel) was thought to be a troglobite confined to the type locality (Cueva del Pis). Discovery of epigeal populations in the Cantabrian valleys of the Pas and Pisueña river basins and in nearby caves have enlarged the geographical range of this species to an additional three caves of the valleys of the Pisueña, Besaya and Asón river. New data on the biology and way of life of the species show that it is markedly hygrophilous, lucifugous and epigeal: habits that enable permit its occasional establishment in the underground environment are confirmed.

Larvae of the genus Pseudocotalpa Hardy, 1971 are described for the first time based on the larva of P. sonorica Hardy 1974. Characters used to separate Pseudocotalpa from similar genera are given. Life history observations of adults of P. sonorica are also given.

We report information about the presence of Agabus (Gaurodytes) paludosus (Fabricius, 1801) within the interstitial zone of the streambed of the Po River (NW Italy) during droughts. During August and November 2004, we found adult and larval stages at depths of 70–90 cm below the surface when no water was present in the channel. These findings are discussed in the context of the origin of stygobiont diving beetles.

Host plant associations are given for the adults of 44 species of melolonthine scarabs in the genera Diplotaxis Kirby, Serica MacLeay and Phyllophaga Harris.

The firefly holdings of the Fernando de Zayas Collection, located in Havana, Cuba, is reported as well as the updated taxonomic status of these species. This is an important collection to the study of the Lampyridae of Cuba and remains one of the major insect collections in Cuba. The lampyrid holdings in this collection include the holotype of Alecton x-nigra Zayas 1988, and one paratype each of Callopisma maestro Mutchler 1923 and Callopisma monticola Mutchler 1923. Data gathered from this collection verifies that the lampyrid genera Robopus and Callopisma are the most speciose. Literature based on outdated taxonomy put the genus Photinus as most speciose genus of firefly in Cuba.

A checklist is presented of the cerambycid (Coleoptera: Cerambycidae) holdings of the Fernando de Zayas Collection, La Habana, Cuba. The size, importance, and condition of the collection are discussed.

The third-instar larvae of Megasoma sleeperi Hardy are illustrated and described based upon three larval specimens. The larvae were hatched in captivity from eggs obtained from adult females collected near Glamis, Imperial Co., California, USA, in mid-September 2003. Their structure is compared with that of Megasoma occidentalis Bolivar y Pieltain et al. and Megasoma cedrosa Hardy in order to find species-level characters. A description of the adult male is included, based upon the examination of three males.

The feeding ecology of Scarites aterrimus Morawitz (Coleoptera: Carabidae), an endangered shore-inhabiting species, was studied by field observations and laboratory experiments. S. aterrimus adults fed on a dead Anisolabis maritima (Bonelli) earwig and dead Armadillidium vulgare (Latreille) pill bug on a beach at night in central Japan. In the laboratory, the adults frequently fed on the carcasses of an earwig, the maggots of the fly species Phaenicia sericata (Meigen), the sandhopper Platorchestia joi Stock & Biernbaum and the pill bug A. vulgare. Predatory behavior was restricted to live fly larvae and pill bugs, occasionally live earwigs and sandhoppers. Similar results were obtained for S. aterrimus larvae. S. sterrimus seems to be a scavenger of various invertebrates and also a predator of slow-moving, less-defended invertebrates.

Lepechinia caulescens (Ortega) Epling (Lamiaceae) is reported as a new host plant for the bruchine Stator dissimilis Johnson & Kingsolver. Stator dissimilis and its host seeds are discussed and illustrated; also some ecological comparisons are made with other species in the genus Stator. Oviposition guilds in the genus Stator are briefly discussed.