>I'm curious - did you notice Rabbitfoot Clover (Trifolium arvense)
>growing at these sites? While there are a number of legumes listed
>as potential hosts, I have found Eastern Tailed Blues about a half
>dozen times now, and have noticed that Rabbitfoot Clover is
>invariably present. There are always a couple of other
>legume species present as well, but I've had no other single species
>present at all sites yet.
All three sites had a variety of Trifolium sp present, Dwayne,
including T. arvense, T aureum, T. repens and T.
pratense...impossible to say one of them is representative. However,
T. arvense was absent in ON sites where I commonly found ET
Blues...I've always associated them more with Vicia, including V.
cracca which was also present at all three sites here in NS. I
associated them with V. ludoviciana and Astragalus distortus in
central TX.
My familiarity with them from TX may be a range-limit lesson, too.
From my experience, ET Blues are excellent colonizers and apparently
fly great distances, which may explain them turning up in NS this
year. I managed a biology station for the University of TX at Austin
for a bit more than 10 years from 1997 through to 2007. I never
recorded ET Blues at the station -- central TX is the extreme
southwest edge of their range -- until a single tattered and torn
individual, presumably female (based on the subsequent history) was
photo'd on Sep. 12/04.
This was followed by a fresh male photo'd Nov. 23/04. Females were
seen the following year on Mar. 31/05, Apr. 2/05 and Apr. 7/05,
followed by a male on Apr. 29. A fresh female was again photo'd on
May 2/ 05 with a fresh male on May 12/05. I have no further photos
from 2005 (which may be due to their absence during the heat of
summer or my perception of them being common enough to not take
photos!). The last individual seen at the station, a fresh female,
was on Apr. 3/06. 2006 was a drought year and they were not
seen/photo'd for the remainder of the year and none were encountered
in 2007.
My feeling is that now that they're here in NS, they should persist
(given an assumption of continuing mild winters and the maritime
climate).