Sympistis chionanthi, the grey o moth or fringe-tree sallow, is a moth of the family Noctuidae. The species was first described by James Edward Smith in 1797.[1] It is found from North Dakota to Nova Scotia south to at least to Virginia and Kansas.[2] The habitat consists of deciduous woodlands, including riparian woodlands, but also plantations and farmyard shelterbelts.[3]
The wingspan is about 33–38 mm. Adults are on wing from August to October in one generation per year.[4]
The larvae feed on Fraxinus and Chionanthus species (including Chionanthus virginicus) and possibly other Oleaceae species. Larvae can be found in May and June.