Archived posting to the Leica Users Group, 2009/09/03
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]If they are bad this year, they will be bad 17 years from now too. :-) On Sep 3, 2009, at 6:09 PM, Jim Nichols wrote: > 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 >> > > > > _______________________________________________ > Leica Users Group. > See http://leica-users.org/mailman/listinfo/lug for more information