What observation regarding exit holes immediately signals a true seed weevil infestation like *A. obtectus*?

Answer

Presence of neat, round exit holes

The presence of neat, round exit holes immediately signals a true seed weevil infestation like *A. obtectus*, as this results from the adult chewing its way out after developing internally, distinguishing it from pests like the confused flour beetle.

What observation regarding exit holes immediately signals a true seed weevil infestation like *A. obtectus*?
insectclassificationWeevilbean