Some lifecycle questions about the Silvery Blue

Thomas, Tony tthomas at
Fri May 29 12:50:17 EDT 1998

Roger Kuhlman wrote

	"Paul Opler's Eastern Butterfly Guide says that the larval food of
> 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 
> true?
> Also how does the Silvery Blue spend the winter? As eggs, caterpillars, 
> or in a cacoon. I would to observe some feeding caterpillars."
	Last year I collected larvae on sweet white clover (Melilotus alba)
and successfully fed them to pupa. I overwintered them underground. Dug them
up earlier this year. They emerged last week and were released.
	This was in Fredericton, New Brunswick, Canada.

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