Common Eastern Physocephala Fly

Scientific Name: Physocephala tibialis

Family: Conopidae

Native Range: East United States, Pennsylvania*

Size: I observed them to be about 25 mm (1 in)

Active: July – August

Color and Appearance: “Adult body mostly black, with thin white, posterior bands on abdominal segments one and two; tibiae whitish at base.”*

Common Eastern Physocephala Wasps are flies that parasitize bees. They station themselves near flowers where they can find victims.*

*From Wikipedia (

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