An updated checklist of fireflies (Coleoptera: Lampyridae) from Mexico is presented. The checklist includes the following valid taxa: the subfamilies Amydetinae Olivier in Wytsman, 1907, Chespiritoinae Ferreira, Keller and Branham, 2020, Photurinae Lacordaire, 1857, Pterotinae LeConte, 1861, and Lampyrinae Rafinesque, 1815, in addition to 8 tribes (including incertae sedis), 2 subtribes, 25 genera, and 232 species. We also propose Photinus cubilguitzi Pérez-Hernández & Zaragoza-Caballero nom. nov. as a replacement name for Photinus moestus (Gorham, 1884) nec Photinus moestus (Perty, 1830). At least 152 documented species (65.6% of the total) are restricted to Mexico, another 21 have also been recorded in Canada and the United States of America, and 59 in different Latin American countries. Remarkably, Photinini contains 64.6% (150 species) of the Mexican lampyrid fauna, and at least 54.7% (127 species) belong to the Photinus genus. The Mexican Transition Zone had higher Lampyridae species richness and endemism than the Nearctic and Neotropical biogeographic regions in the country, while the Transmexican Volcanic Belt, Veracruzan and Balsas Basin biogeographic provinces harbor the highest overall species richness and endemism. Veracruz and Oaxaca are the richest states in terms of lampyrid genera and species, while Aguascalientes, Querétaro and Zacatecas have only one or no species recorded each. To date, 10% of the global firefly fauna has been recorded in Mexico, and the country has a large number of endemic species. It is essential to intensify the study and fieldwork throughout the country to increase our knowledge of the group, with special focus on poorly explored regions and endemic species, and from other perspectives in addition to taxonomy.

One aspect of cantharids that has received little attention is the analysis of temporal diversity patterns. For an approximation to this aspect, temporal variation in richness, abundance and temporal turnover in monthly species composition were analyzed for seven assemblages of Cantharidae associated to the Tropical Dry Forest (TDF), in Mexico. A search was also made for processes associated. High species richness and abundance for the rain season, high dissimilarity among the months of the inter-seasonal period, and common patterns of diversity in the assemblages, regardless of the species they included, were expected. The seven assemblages clearly displayed a seasonal pattern of abundance associated with the rain season, but the total expression of seasonality in each assemblage was determined by asynchronous emergence of genera and species, in addition to high temporal turnover in species composition. With few exceptions, abundance, richness and temporal turnover showed statistically significant correlation with variation in precipitation; temperature had apparently little or no influence. The results suggest that adult emergence could be determined by host plant phenology and, indirectly, by abiotic factors such as precipitation. The importance of conducting more comprehensive studies to provide accurate evidence to characterize temporal patterns of diversity in TDF insect assemblages and associated processes, not just indicating the presence-absence of species at given times and places is emphasized.

Data from the literature and from specimens preserved at the Colección Nacional de Insectos (CNIN) Instituto de Biología, UNAM were used to compile a checklist of the fauna of Coleoptera of the state of Morelos, México. A sum of 70 families, 167 subfamilies, 361 tribes, 1,022 genera, and 2,606 species are recorded; from this 24 species are new records for Morelos. The State of Morelos ranks fourth in Coleoptera species richness for Mexico, following Veracruz (3,176 spp.), Oaxaca (2,148 spp.) and Chiapas (1,734 spp.). The checklist presented here provides a summary that can serve as a basis for future progress in the knowledge of Mexican Coleoptera.

A study on the patterns of richness, diversity and abundance of the Odonata from Santiago Dominguillo, Oaxaca is presented here. A total of 1601 specimens from six families, 26 genera and 50 species were obtained through monthly samplings of five days each. Libellulidae was the most diverse family (21 species), followed by Coenagrionidae (19), Gomphidae (4) and Calopterygidae (3). The Lestidae, Platystictidae and Aeshnidae families were the less diverse, with only one species each.Argiawas the most speciose genus with 11 species, followed byEnallagma,Hetaerina,ErythrodiplaxandMacrothemiswith three species each andPhyllogomphoides,Brechmorhoga,Dythemis,ErythemisandOrthemiswith two species each. The remaining 17 genera had one species each.Argia pipilaCalvert, 1907 andLeptobasis vacillansHagen in Selys, 1877 were recorded for the first time for the state of Oaxaca. We also analysed the temporal patterns of taxonomic and phylogenetic divergence for the Santiago Dominguillo Odonata assemblage: the Shannon diversity value throughout the year was 21.07 effective species, while the Simpson diversity was 13.17. In general, the monthly phylogenetic divergence was higher than expected for taxonomic distinctness, and lesser for average taxonomic distinctness. Monthly diversity, evenness and taxonomic divergence showed significant positive correlations (from moderate to strong) with monthly precipitation values. The analysis of our results, however, indicates that an increase in rainfall not only influences the temporal diversity of species, but also the identity of supraspecific taxa that constitute those temporal assemblages, i.e. there is an increase in temporal phylogenetic divergence.

ResumenSe presenta un análisis de la diversidad alfa y beta de 7 ensambles de Cantharidae asociados a bosque tropical caducifolio (BTC) de la vertiente del Pacífico mexicano, como una primera aproximación a los patrones de diversidad de insectos en ese tipo de vegetación. Se exploran los 2 procesos que originan la diversidad beta (βcc): reemplazamiento de especies (β-3) y diferencia en riqueza de especies (βrich), así como la relación de la diversidad beta con la precipitación, temperatura, estacionalidad, altitud, latitud y distancia geográfica. Se revisaron 4,063 ejemplares, 10 géneros y 70 especies de cantáridos, 59% de las cuales fueron exclusivas de la localidad de recolecta. El género Plectonotum y 11 especies representan nuevos registros en el país y otros 15 son nuevos registros estatales. Se encontró una diversidad beta alta entre los 7 ensambles, con un promedio de 88% de disimilitud total, explicada principalmente por el reemplazamiento de especies. Este componente estuvo correlacionado positivamente con la distancia geográfica y ninguna otra variable influyó en la diversidad de Cantharidae del BTC. No se observó un patrón altitudinal o latitudinal. Se sugiere que la diversidad de cantáridos podría estar determinada por la diversidad florística o la historia biogeográfica de los BTC que habitan.AbstractAn analysis of alpha and beta diversity between 7 assemblages of Cantharidae (Coleoptera) associated to the tropical dry forest (TDF) in the Mexican Pacific Slope is presented, as a first approximation to the study of insect diversity patterns in this type of vegetation. We explored beta diversity (βcc) and its 2 components: species replacement (β-3) and species richness differences (βrich). Relationships between beta diversity and different environmental parameters (precipitation, temperature, seasonality, altitude, latitude and geographic distances) were analyzed as well. We examined 4,063 individuals, 10 genera and 70 species of cantharids; 59% of species were exclusive to each locality. The genus Plectonotum and 11 species are new reports for the country, and other 15 are new state reports. We found high beta diversity between the 7 assemblages, with 88% of mean total dissimilarity, mainly explained by the replacement (β-3) component. Species replacement was correlated with geographic distance between assemblages and no other factor seems to influence beta diversity of Cantharidae from the TDF. The latitudinal or altitudinal pattern was not observed. We suggest that Cantharidae diversity could be determined by the floristic diversity or the biogeographic history of the TDF they inhabit