Thyridanthrax
Guides
Thyridanthrax fenestratoides
Thyridanthrax fenestratoides is a bee fly species in the family Bombyliidae. Its range extends from the Yukon through Canada, across most of the United States, and into Mexico. The species is morphologically similar to the Eurasian T. fenestratus. As a member of the genus Thyridanthrax, it is a known parasitoid of solitary wasp nests, with females observed hovering over open burrows and depositing eggs into tunnels.
Thyridanthrax melanopterus
Thyridanthrax melanopterus is a species of bee fly (family Bombyliidae) in the genus Thyridanthrax. The genus is known for parasitoid behavior, with females depositing eggs into the burrows of solitary wasps. Observations of related Thyridanthrax species indicate females hover over host nests and lob eggs into tunnels. This species has been documented in 32 iNaturalist observations.