vannessa sp. rarity
yanb at globetrotter.net
Mon Jan 11 23:19:27 EST 1999
Since 1993, I saw only 3 specimens of Vanessa cardui (L.) and 2
of the Vanessa virginiensis (Drury) specie even if I was almost always
in the field for
the past 5 summer (except this year).
Species / Year 1993 1994 1995 1996
Vanessa virginiensis 0 1(24/07) 0
0 0 1(?/09)
Vanessa cardui 0 0 3(25/07,
0 0 0
I know that these species are supposed to be common or very common but
they are cyclic.
Also, I heard that a polyedre sickness was presented sometimes on the
of those two species and can kill a great number of caterpillars in a
matter of days.
Is it the case for the past 5 years?
Maybe they have just migrated from our region (Bas-St-Laurent, Qc. Ca.).
I would like to know if is it the same in your region (in america).
Thx, Yan Boulanger
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