Archived posting to the Leica Users Group, 2009/09/03
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Hi Jeffery, Thanks for the technical details. As I mentioned before, with my high frequency hearing loss from years of exposure to noisy compressor plant equipment, they don't bother me too much unless I go outside with my hearing aid in place. Then, the noise is very noticeable. Jim Nichols Tullahoma, TN USA ----- Original Message ----- From: "Jefffery Smith" <jsmith342 at gmail.com> To: "Leica Users Group" <lug at leica-users.org> Sent: Thursday, September 03, 2009 6:00 PM Subject: Re: [Leica] IMG: Noisy Insect > Their method of making that noise is interesting. They have a drum- head > like diaphragm on either side of the body with 4 folds in it. Pulling on > the diaphragm (with a muscle) causes 4 consecutive "banging" noises, like > squeezing an empty plastic water bottle. They alternate doing the left > and right side diaphragms, and that means two muscle contractions cause 8 > loud banging noises. In the oaks down here in the Garden District, it > sounds like people with chain saws. > > By the way, these are the bugs whose nymph stage lasts 17 years. After 17 > years, the nymph crawls up the side of a tree, and later hatches out of a > skin to become an adult cicada. The "shells" that someone mentioned is > the cast-off nymph shell. > > Jeffery > > > On Sep 3, 2009, at 12:08 PM, Jim Nichols wrote: > >> I came across this noisy insect on my way to the mail box this morning. >> I have not yet established his identity. Can anyone help identify this >> fellow? I should have stopped down further, but he was not cooperative. >> >> http://gallery.leica-users.org/v/OldNick/Noisy+Insect.jpg.html >> >> Feedback appreciated. >> >> Jim Nichols >> Tullahoma, TN USA >> >> _______________________________________________ >> Leica Users Group. >> See http://leica-users.org/mailman/listinfo/lug for more information > > > _______________________________________________ > Leica Users Group. > See http://leica-users.org/mailman/listinfo/lug for more information > >