[NatureNS] Id help needed!

From: "andy dean" <aadean@ns.sympatico.ca>
To: <naturens@chebucto.ns.ca>
References: <4C502C90.1060605@eastlink.ca>
Date: Wed, 28 Jul 2010 11:23:04 -0300
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Return-Path: <naturens-mml-owner@chebucto.ns.ca>
Original-Recipient: rfc822;"| (cd /csuite/info/Environment/FNSN/MList; /csuite/lib/arch2html)"

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Your query provoked some very interesting comments from  David =
McCorquodale, Eleanor. Many of us learned something.
i will add that these 'beasties' have very formidable pincer-like jaws =
which are folded beneath the head and are capable of extending to =
capture prey, my wife and I learned this when we found one of our small =
goldfish swimming erratically and obviously in trouble.....Turning it =
over with a stick we discovered it was firmly in the grip of a dragonfly =
nymph, and subsequently died.

Andy and Lelia Dean
86 Baden Powell Drive
Kentville, N.S.
(902) 678-6243

  ----- Original Message -----=20
  From: Eleanor Lindsay=20
  To: naturens@chebucto.ns.ca=20
  Sent: Wednesday, July 28, 2010 10:11 AM
  Subject: [NatureNS] Id help needed!


  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=20
  from the water they shed the exoskeleton and these sometimes last for=20
  days or even weeks on the vegetation where they emerge.  It has not=20
  moved because it is an empty shell of the former dragonfly larva.=20

  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=20
  a better identification than dragonfly.=20

  Eleanor Lindsay =20
  (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!)=20

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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD>
<META content=3D"text/html; charset=3Diso-8859-1" =
http-equiv=3DContent-Type>
<META name=3DGENERATOR content=3D"MSHTML 8.00.6001.18928">
<STYLE></STYLE>
</HEAD>
<BODY bgColor=3D#ffffff text=3D#000000>
<DIV>
<DIV><FONT face=3DArial><FONT size=3D4><STRONG>Your query provoked some =
very=20
interesting comments from&nbsp;<FONT face=3DHelvetica> David =
McCorquodale,=20
Eleanor.&nbsp;Many of us&nbsp;learned=20
something.</FONT></STRONG></FONT></FONT></DIV>
<DIV><STRONG><FONT size=3D4 face=3DHelvetica>i will add that these =
'beasties' have=20
very formidable pincer-like jaws which are folded beneath the head and =
are=20
capable of extending&nbsp;to capture prey, my wife and&nbsp;I learned =
this when=20
we found one of our small goldfish swimming erratically and obviously in =

trouble.....Turning it over with a stick we discovered it was firmly in =
the grip=20
of a dragonfly nymph, and subsequently died.</FONT></STRONG></DIV>
<DIV><STRONG><FONT size=3D4 =
face=3DHelvetica></FONT></STRONG>&nbsp;</DIV>
<DIV><FONT size=3D2 face=3DArial>Andy and Lelia Dean<BR>86 Baden Powell=20
Drive<BR>Kentville, N.S.<BR>(902) 678-6243<BR></FONT></DIV></DIV>
<BLOCKQUOTE=20
style=3D"BORDER-LEFT: #000000 2px solid; PADDING-LEFT: 5px; =
PADDING-RIGHT: 0px; MARGIN-LEFT: 5px; MARGIN-RIGHT: 0px">
  <DIV style=3D"FONT: 10pt arial">----- Original Message ----- </DIV>
  <DIV=20
  style=3D"FONT: 10pt arial; BACKGROUND: #e4e4e4; font-color: =
black"><B>From:</B>=20
  <A title=3Dkelindsay@eastlink.ca =
href=3D"mailto:kelindsay@eastlink.ca">Eleanor=20
  Lindsay</A> </DIV>
  <DIV style=3D"FONT: 10pt arial"><B>To:</B> <A =
title=3Dnaturens@chebucto.ns.ca=20
  href=3D"mailto:naturens@chebucto.ns.ca">naturens@chebucto.ns.ca</A> =
</DIV>
  <DIV style=3D"FONT: 10pt arial"><B>Sent:</B> Wednesday, July 28, 2010 =
10:11=20
  AM</DIV>
  <DIV style=3D"FONT: 10pt arial"><B>Subject:</B> [NatureNS] Id help =
needed!</DIV>
  <DIV><BR></DIV><FONT face=3D"Helvetica, Arial, sans-serif">My thanks =
to so many=20
  of you for your interest and offers of help in this.<BR><BR>I am =
including the=20
  first (and most helpful) response from David McCorquodale, Biology =
Department,=20
  Cape Breton University:<BR><BR></FONT>This is the exuvia of a recently =
emerged=20
  dragonfly.&nbsp; When they emerge <BR>from the water they shed the =
exoskeleton=20
  and these sometimes last for <BR>days or even weeks on the vegetation =
where=20
  they emerge.&nbsp; It has not <BR>moved because it is an empty shell =
of the=20
  former dragonfly larva. <BR><BR>For some dragonflies surveys of the =
exuviae=20
  are the best way to figure <BR>out what species live in the water body =
and to=20
  monitor populations.&nbsp; I <BR>have sent it to a dragonfly expert, =
Denis=20
  Doucet, to see if he can give <BR>a better identification than =
dragonfly.=20
  <BR><BR><FONT face=3D"Helvetica, Arial, sans-serif">Eleanor =
Lindsay&nbsp;=20
  <BR>(It is impressive that such a solid looking shell continues to =
cling in=20
  such a lifelike manner to the leaf blade&nbsp; - but at least now I no =
longer=20
  need to worry about the welfare of what I am seeing!)</FONT>=20
<BR></BLOCKQUOTE></BODY></HTML>

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