This article presents a taxonomic analysis of the grasshoppers utilised as food sources in several municipalities of the state of Morelos, Mexico; three families, four genera, and ten species were documented. The representative genus,Sphenarium, consists of seven different species. Various aspects regarding the host plants and collection and trade of these organisms are discussed. In addition, the importance of these organisms as a renewable natural food resource for rural communities in the state of Morelos is discussed.

Se presenta un inventario de especies de Elateridae (Insecta: Coleoptera: Elateroidea) en la Estación de Biología Chamela, Jalisco, México. La identificación se realizó con base en evidencia morfológica y molecular (ADN mitocondrial del gen citocromo oxidasa subunidad I [COI]). El trabajo de campo se realizó entre 2009 y 2012. Se recolectaron 544 individuos pertenecientes a 46 especies, 25 géneros, 7 subfamilias y 11 tribus; se obtuvieron 106 secuencias de varias de las morfoespecies discriminadas. Treinta y ocho especies fueron discriminadas con información molecular, y se encontraron 10 casos de discordancia entre evidencia molecular y morfológica. La subfamilia Elaterinae presentó la mayor riqueza de especies (18 spp.), seguida de Agrypninae (16 spp.) y Cardiophorinae (6 spp.). Las subfamilias con menor número de especies fueron Cebrioninae (2 spp.), Lissominae (2 spp.), Semiotinae (1 sp.) y Thylacosterninae (1 sp.). Los géneros con mayor riqueza de especies fueron Conoderus (6 spp.), Megapenthes (5 spp.) y Esthesopus (4 spp.). Se obtuvieron 27 nuevos registros de especies para Jalisco, 5 nuevos registros para México y 7 especies potencialmente nuevas para la ciencia. Este estudio resalta la importancia de emplear diferentes fuentes de caracteres para obtener un mejor conocimiento de la riqueza de especies en estudios faunísticos, especialmente en grupos altamente diversos.

It represents the first contribution to the knowledge of the Elateridae family present in the state of Michoacán, Mexico. This contribution triples the number of species registered in the entity, which are classified into five subfamilies, 11 tribes, two subtribes, 22 genera and 40 species. Within these species, 28 new state records, a possible new species and the location of three endemic species can be highlighted.

We present the most complete synthetic overview of the diversity of the order Coleoptera in Mexico to date. A list of all families known in Mexico is provided, as well as those likely distributed in Mexico but not yet officially recorded, including the number of described species recorded in the country for each. A summary of the state of knowledge for each family is included. Based on our data, Mexican beetles are represented by all four suborders, seven series, 24 superfamilies, and 129 families, plus eight families not yet recorded but probably distributed in the country based on their distribution in neighboring countries. Currently, 21,755 beetle species are recorded from Mexico.

En este trabajo se describe la hembra de Scaptolenus acrognathus Champion, 1896 y se redescribe al macho. Se proporcionan tres nuevos registros estatales para esta especie endémica de México, los cuales se ubican en el Estado de México, Querétaro y San Luis Potosí. Se proporcionan fotografías para ilustrar esta especie, sus caracteres externos y los genitales de ambos sexos. Se proporcionan características de hábitat generalizadas para los sitios de colecta conocidos.

We report new biological associations between pseudoscorpions (Arachnida) and click beetles of the genus Chalcolepidius Eschscholtz, 1829 (Coleoptera, Elateridae) in the states of Hidalgo and Tabasco, Mexico. These associations confirm that a correlation can be established when habits are shared. These findings increase the pho-retic records between these biological groups in Mexico, highlighting the need for further study of this biological relationship.