songbird wrote:
....
looks like only one life-cycle per season.

further readings...

based upon a mis-reading/misunderstanding
of the wording on the wiki site, which says:

"In Britain, it has two flight periods, April–May
and July–August, but is continuously-brooded in North
America, being one of the first butterflies to emerge
from the chrysalis in spring, flying until hard freeze
in the fall."

that last bit made me think one critter flew all
season...

after reading other sources it looks like there are
at least two (and perhaps three) flights in this area
each season.

at 200-400 eggs per critter that's a lot of worms --
even if only some of them make it to hatching and
chewing stages.

i haven't seen them flying at all the past few days
(heat sensitive?).


songbird