Invasive Species Compendium

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Abstract

Morphological delimitation between Chelonus insularis and Chelonus sonorensis in the Maize region of Durango, Mexico.

Abstract

Knowing the taxonomy of hymenoptera parasitoids is essential for understanding their biodiversity, conservation, and reproduction. The morphological identity of three species of the genus Chelonus reported as parasitoids of fall armyworm associated with corn in Durango, Mexico (Chelonus cautus, C. sonorensis, and C. insularis) was corroborated, at the same time eight morphotypes with morphological characters similar to these species, but with different coloration patterns in the metasome, non-distinctive or unique character for their identification. Taxonomic keys, PCR tests, as well as bibliographic searches were used that indicated that C. insularis and C. sonorensis,as well as the eight morphospecies, morphologically, and genetically belong to the same species [C. insularis]. Chelonus cautus was different from C. insularis and C. sonorensis, it also belongs to another genus different from the nominal one (Microchelonus cautus). These results allowed us to know about the origin of these parasitoids (initial diagnosis) and to recognize that they have inaccurately established names, which will allow their future redescription.