[NatureNS] Id help needed!

Date: Wed, 28 Jul 2010 10:11:44 -0300
From: Eleanor Lindsay <kelindsay@eastlink.ca>
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--Boundary_(ID_3YNDFi6izuA1cjsnVqdZIA)
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  My thanks to so many of you for your interest and offers of help in this.

I am including the first (and most helpful) response from David 
McCorquodale, Biology Department, Cape Breton University:

This is the exuvia of a recently emerged dragonfly.  When they emerge
from the water they shed the exoskeleton and these sometimes last for
days or even weeks on the vegetation where they emerge.  It has not
moved because it is an empty shell of the former dragonfly larva.

For some dragonflies surveys of the exuviae are the best way to figure
out what species live in the water body and to monitor populations.  I
have sent it to a dragonfly expert, Denis Doucet, to see if he can give
a better identification than dragonfly.

Eleanor Lindsay
(It is impressive that such a solid looking shell continues to cling in 
such a lifelike manner to the leaf blade  - but at least now I no longer 
need to worry about the welfare of what I am seeing!)

--Boundary_(ID_3YNDFi6izuA1cjsnVqdZIA)
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>

    <meta http-equiv="content-type" content="text/html; charset=ISO-8859-15">
  </head>
  <body bgcolor="#ffffff" text="#000000">
    <font face="Helvetica, Arial, sans-serif">My thanks to so many of
      you for your interest and offers of help in this.<br>
      <br>
      I am including the first (and most helpful) response from David
      McCorquodale, Biology Department, Cape Breton University:<br>
      <br>
    </font>This is the exuvia of a recently emerged dragonfly.  When
    they emerge
    <br>
    from the water they shed the exoskeleton and these sometimes last
    for
    <br>
    days or even weeks on the vegetation where they emerge.  It has not
    <br>
    moved because it is an empty shell of the former dragonfly larva.
    <br>
    <br>
    For some dragonflies surveys of the exuviae are the best way to
    figure
    <br>
    out what species live in the water body and to monitor populations. 
    I
    <br>
    have sent it to a dragonfly expert, Denis Doucet, to see if he can
    give
    <br>
    a better identification than dragonfly.
    <br>
    <br>
    <font face="Helvetica, Arial, sans-serif">Eleanor Lindsay  <br>
      (It is impressive that such a solid looking shell continues to
      cling in such a lifelike manner to the leaf blade  - but at least
      now I no longer need to worry about the welfare of what I am
      seeing!)</font> <br>
  </body>
</html>

--Boundary_(ID_3YNDFi6izuA1cjsnVqdZIA)--

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