Some lifecycle questions about the Silvery Blue

Roger Kuhlman rkuhlman at
Fri May 29 12:15:03 EDT 1998

Paul Opler's Eastern Butterfly Guide says that the larval food of the 
Silvery Blue (Glaucopsyche lygdamus) are vetches. Does the butterfly 
have a preference among vetches or does it vary geographically? Someone 
told me that the butterfly prefers purple vetch in SE Michigan. Is this 

Also how does the Silvery Blue spend the winter? As eggs, caterpillars, 
or in a cacoon. I would to observe some feeding caterpillars.

Roger Kuhlman
rkuhlman at
Ann Arbor, Michigan

Get Your Private, Free Email at

More information about the Leps-l mailing list