Bryolymnia biformata is a moth of the family Noctuidae first described by Donald Lafontaine and J. Walsh in 2010.

It is known only from the Huachuca, Patagonia, and Santa Rita Mountains in south-eastern Arizona.

Adults have been collected between mid-June and late July.

The specific name biformata is from Latin and refers to the two color forms of this species.

This Hadeninae-related article is a stub.