Leafroller-hunter
Guides
Ancistrocerus unifasciatus unifasciatus
Ancistrocerus unifasciatus unifasciatus is a subspecies of mason wasp in the subfamily Eumeninae. Females are mid-sized with forewing lengths of 9.5-12 mm, while males measure 6.5-9 mm. The species exhibits sexual dimorphism in facial markings: males possess a large yellow patch on the face, while females have only a couple of spots. This solitary wasp nests in pre-existing cavities, particularly abandoned mud dauber nests, and provisions its young with paralyzed caterpillars.