| Resumo: | The Coleopterological Collection of the Facultad de Estudios Superiores Zaragoza (CCFES-Z), UNAM has 28,189 specimens grouped in 2,596 morphospecies belonging to the suborders Adephaga, Archostemata, Myxophaga and Polyphaga. The specimens are classified into 10 superfamilies, 60 families, 85 subfamilies, 238 tribes and 78 subtribes. To date, 808 genera and 1,207 species have been identified. Pachybrachis Chevrolat with 57 morphospecies (Chrysomelidae), is the most diverse genus, following of Phyllophaga Harris with 41 (Scarabaeidae), Agrilus Curtis with 39 (Brupestidae), Cryptocephalus Geoffroy with 33 (Chrysomelidae), and Systena Chevrolat with 30 (Chrysomelidae). The collection housed type specimens of the species: Brachiacantha angulata Nestor-Arriola & Toledo-Hernández, B. brevicuspidata Nestor-Arriola & Toledo-Hernández, B. truncata Nestor-Arriola & Toledo-Hernández, Cephalocyclus ordonezi Dellacasa, Dellacasa & Gordon, Macrocopturus burserophagus Muñiz & Ordóñez, Mastostethus gracilis Rodríguez-Mirón and Phyllophaga villardoi Morón & Ordóñez-Reséndiz. Polyphaga is the suborder most diverse with 2,372 morphospecies and 26,375 specimens. However, Adephaga has only three families, and it has a high representativeness, 8.5% and 6.4% of the total of morphospecies and specimens. Archostemata and Myxophaga has one specimen and one species. Chrysomelidae is the family most diverse with 859 morphospecies and 11,295 specimens, following of Curculionidae and Cerambycidae. Beetles at the CCFES-Z represent species of 20 Mexican states.
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