Karner Blue: Mark Walker's query

[Michael Gochfeld]

I've wondered about that too.  I've also wonder why some Scrub Oak 
communities have Edward's Hairstreak in abundance while others have 
none.  

One suggestion made to me was that the commensal ant might not be 
available. 

Another issue for Vermont might have to do with snow cover and 
vulnerability of the overwintering eggs.  Although like so many 
explanations this could cut both ways.  If there's not enough snow cover 
the eggs may be exposed and dessicate.  If there's too much or too long 
snow cover, that may be bad also. 

Mike Gochfeld