New York Natural Heritage Program
Edwards' Hairstreak
Satyrium edwardsii (Grote and Robinson, 1867)
Insects

Threats [-]
Loss of habitat and, potentially, gypsy moth (Lymantria dispar) spraying are threats. In some locations, habitat changes due to lack of fire is also a threat. Any factor that negatively impacts Formica ants could also threaten colonies of this butterfly.

Conservation Strategies and Management Practices [-]
In places where prescribed burning is used, refugia (unburned areas) are needed as it is unlikely that any life stage would survive a fire. If a few eggs did manage to survive a fire, they would almost certainly hatch before the scrub oaks resprouted and the larvae would starve. It is possible that the host ants (Formica ants) might have management needs, and these ants appear to be an important resource for the larvae. In some habitats, augmentation of nectar flowers might be beneficial. Gypsy moth (Lymantria dispar) spraying should not be done where this species occurs, unless it can be shown that the larvae are not highly sensitive to Bt (Bacillus thuringiensis) formulations. At least one other species of this genus appeared to be very sensitive in field studies (Wagner et al., 1996)

Research Needs [-]
Associated ant species in all parts of the range need to be documented.