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Chalcidoidea are a highly diverse group of Hymenoptera and the most common parasitoids, being associated to more than 15 hexapod orders. The identification of species in this superfamily is considerably difficult due to their small size, lack of comprehensive taxonomic studies for many groups and convergence of morphological features. In this study, we aimed to identify the chalcidoid species that are associated to bruchine beetles (Chrysomelidae) from central and southern Mexico, using morphological and molecular (mitochondrial COI gene) evidence. We report a total of 39 bruchine species associated to 8 plant taxa. The gathered morphological and molecular evidence allowed to delimit 29 chalcidoid species, 6 of which are new records for Mexico. We found inconsistencies in the species delimitation between the morphological and molecular data in species of Eupelmus (Eupelmidae) and Horismenus (Eulophidae). This study highlights the considerable species richness of chalcidoid taxa that are associated to bruchine beetles, and the need to provide reliable host records for members of this group of parasitoids.

revista mexicana de biodiversidad

Integrative taxonomy to assess the species richness of chalcidoid parasitoids (Hymenoptera) associated to Bruchinae (Coleoptera: Chrysomelidae) from Mexico