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Many thanks to all those who responded to my
question. A quick glance at recent ABRs indicates a spread of obs. Apr. to Oct,
with great variation between years from time of presence and number of records.
So, there is still some hope.
Earlier reports even talk of a small permanent
population at BotG (McComas Taylor & COG 1992 and Wilson 1999), and in
suburbia "it arrives in April and builds up to a peak in July and then declines
through to November" (Veerman 2003).
Probably another species that shows signs of having
suffered directly or indirectly from the drought (??).
Michael Lenz
P.S. I generally share Frank Antram's "bad luck"
when visiting BotG. But still great to spend time
there.
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