New records of bee flies (Diptera, Bombyliidae) from Cuatro Cienegas, Coahuila, Mexico Author Avalos-Hernandez, Omar Author Kits, Joel Author Trujano-Ortega, Marysol Author Garcia-Vazquez, Uri Omar Author Cano-Santana, Zenon text ZooKeys 2014 422 49 85 http://dx.doi.org/10.3897/zookeys.422.7598 journal article http://dx.doi.org/10.3897/zookeys.422.7598 1313-2970-422-49 C2F172F901594CB880087649B690CEF0 C2F172F901594CB880087649B690CEF0 Taxon classification Animalia Diptera Bombyliidae Genus Heterostylum Macquart Remarks. The genus is only present in Nearctic and Neotropical regions. Although not as diverse as other genera (only 12 species), specimens from some species are abun dant in the field. Heterostylum robustum was previously known from Coahuila and was collected during this study. This species is distributed from Canada to central Mexico. There are two revisions for this genus that contains identification keys, one by Hall and Evenhuis (1980) and the more recent by Cunha et al. (2007) .