New York Natural Heritage Program
Tawny Emperor
Asterocampa clyton (Boisduval and Le Conte, [1835])

Threats [-]
The threats include habitat destruction, leaf raking, and Gyspy Moth (Lymantria dispar) spraying. Larvae of this species were documented to be highly sensitive to Bt (Bacillus thuringiensis - a bacterial biological control used on Gypsy Moths) (Peacock et al. 1998). Like many gregarious species, population numbers can fluctuate greatly, partially due to parasitism, and small colonies may not persist in some years. Cold winters without snow cover might also eliminate populations in New York.

Conservation Strategies and Management Practices [-]
Leaf litter under hackberries (Celtis spp.) should be left undisturbed from mid-August into May since the larvae spend most of the year hibernating there (Dale Schweitzer).