sherwindu wrote:

Not sure why you think there was a Cicada invasion in the Midwest in 2004. I
did not see it here near Chicago. As far as I know, the most common cycles in
North America are 17 years for the Northern Cicadas and 13 year cycles for the
Sourthern Cicadas.

I'm still confused about whether the Cicadas crawl up the tree trunks to do
their
damage, or fly up to the branches for the same purpose. I think the Nymphs
crawl
out of their holes and up the trees to lay the eggs. Is that the source of the
tree
damage and if you prevent them from crawling up the trunk, would that stem the
damage?

Sherwin D.


My area (the Ohio valley) is part of the midwest and we had a large
invasion in 2004 as my web site shows:
http://members.iglou.com/brosen/cicada1.htm

The midwest is a very big area and Cicadas invasions usually only cover
small parts of an area. They group of Cicadas that is about to hit your
area is called brood XIII and this site,
http://www.cicadamania.com/cicadas/ has some information on it.

The damage to trees occurs after the females breed with the males and
then fly up to the tree branches to lay their eggs. The last two
pictures on this page, http://members.iglou.com/brosen/cpage6.htm shows
the female laying eggs and the damage done when she cuts slits in the
small tree branch to lay her eggs. The Nymphs coming out of the ground
cause no damage at all.
--
Bill R. (Ohio Valley, U.S.A)

Gardening for over 40 years

To see pictures from my garden visit http://members.iglou.com/brosen

Digital Camera - Pentax *ist DL

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