The eastern tiger swallowtail butterfly with it's bright yellow wings can be seen flying in Northwest Ohio April thru August.
It is the most common swallowtail in Ohio and prefers forested regions.
The males are always yellow but the females can be dark. Dark females are rare in the northern half of Ohio and more common in the southern half of the state.
The Eastern Tiger Swallowtail larvae feed on yellow poplar, wild cherry, and many other broadleaf trees.