This wasp has a very unique head and eye shape that really made it stand out when I found it. After some digging, I'm wondering if it's an introduced wasp from the genus Spathius. There are a few species of this genus that are parasitoids of the emerald ash borer, a major invasive pest in the US. iNaturalist doesn't have any observations of any of the parsitoid species in Illinois, but it was in an area where I've found EAB before.
#insects #wasps #BugMystery #MacroPhotography
