Non-nectar-feeder
Guides
Satyrium favonius
Oak Hairstreak, Southern Hairstreak
Satyrium favonius, commonly known as the Oak Hairstreak or Southern Hairstreak, is a small butterfly in the family Lycaenidae with a wingspan of 22–38 mm. The species is distributed across the eastern and central United States, from southern New England and the Atlantic Coast south to peninsular Florida and west to central Illinois, southeastern Colorado, and the Gulf Coast. The larvae feed on Quercus (oak) species, consuming leaves, buds, and male catkins. The species overwinters as an egg.
Satyrium favonius ontario
Northern Oak Hairstreak
Satyrium favonius ontario, the Northern Oak Hairstreak, is a canopy-dwelling butterfly subspecies found in the northeastern United States. Its perceived rarity appears largely due to detection difficulties rather than actual low population numbers, as adults spend most of their time in oak canopies rather than at ground level. The subspecies has been documented feeding on non-nectar sources including oak gall exudates and honeydew. Listed as a Species of Special Concern in Massachusetts.