[NatureNS] Bluet Photos

From: James Hirtle <jrhbirder@hotmail.com>
To: Naturens Naturens <naturens@chebucto.ns.ca>
Date: Sun, 11 Sep 2011 16:20:53 +0000
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I sent a personal email to Bob on this=2C but forgot to mention the scienti=
fic name.  Enallagma anna.  The bluet could be a marsh bluet Enallagma ebri=
um=2C but in my picture the second segment looks pointed and the size of th=
e black segments seems to increase as you go further back.  In the picture =
that I have of the marsh bluet the size increase of the black segments does=
 not seem to conform to what I would expect in the photo that I have.  Also=
 the cerci appears large in my photo in comparison to what I would expect i=
n another bluet.  The picture is not of hight quality=2C but it should be g=
ood enough to determine species as it can be narrowed down to three possibi=
lities that I can see.  I've ruled out familiar bluet due to the size incre=
ase in the black segments as you move back.  So that leave two possibilitie=
s if I did not miss something.  I'm doing my comparison bassed upon Damself=
lies of the Northeast and the Beginner's Guide To Dragonflies.  My spreadwi=
ng by the way I've determined is an emerald spreadwing.  Lestes dryas.
=20
Sincerely=2C
=20
James
=20



From: bobathome@hfx.eastlink.ca
To: naturens@chebucto.ns.ca
Subject: Re: [NatureNS] Bluet Photos
Date: Sun=2C 11 Sep 2011 12:27:54 -0300





Hi James=2C
=20
Well=2C as I expect you know=2C species of some groups of odes are so simil=
ar that they cannot be positively identified in the field or from photos.  =
This is true of the spreadwings=2C bluets and the meadowhawks to name a few=
 groups. They must be captured and the male terminal appendages examined wi=
th a hand lens (or microscope) and compared to a chart as those found on pa=
ge 32 (for the bluets) and page 20 (for the spreadwings) in the Massachuset=
ts Dragonflies/Damselflies field guide.  Interestingly=2C although some 19 =
species of bluets are covered in the guide=2C of which 11 occur in Nova Sco=
tia=2C river bluet is not one of the 19.  Could you give the scientific nam=
e and possibly the basis for your tentative ID?
=20
Despite all of the above=2C I would be pleased to take a look at your photo=
s.  Thanks for your report.
=20
Bob McDonald
Halifax
=20
=20
=20
=20
From: James Hirtle=20

To: Naturens Naturens=20
Sent: Saturday=2C September 10=2C 2011 11:08 PM
Subject: [NatureNS] Bluet Photos


Hi all:
=20
I also have a recent bluet photo=2C which I think is a river bluet.  I woul=
d like opinions.  Let me know if you would like to take a crack at the id.
=20
Sincerely=2C
=20
James R. Hirtle
Bridgewater
 		 	   		  =

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<body class=3D'hmmessage'><div dir=3D'ltr'>
I sent a personal email to Bob on this=2C but forgot to mention the scienti=
fic name.&nbsp=3B Enallagma anna.&nbsp=3B The bluet&nbsp=3Bcould be a marsh=
 bluet Enallagma ebrium=2C but in my picture the second segment looks point=
ed and the size of the black segments seems to increase as you go further b=
ack.&nbsp=3B In the picture that I have of the marsh bluet the size increas=
e of the black segments does not seem to conform to what I would expect in =
the photo that I have.&nbsp=3B Also the cerci appears large in my photo in =
comparison to what I would expect in another bluet.&nbsp=3B The picture is =
not of hight quality=2C but it should be good enough to determine species a=
s it can be narrowed down to three possibilities that I can see.&nbsp=3B I'=
ve ruled out familiar bluet due to the size increase in the black segments =
as you move back.&nbsp=3B So that leave two possibilities if I did not miss=
 something.&nbsp=3B I'm doing my comparison bassed upon Damselflies of the =
Northeast and the Beginner's Guide To Dragonflies.&nbsp=3B My spreadwing by=
 the way I've determined is an emerald spreadwing.&nbsp=3B Lestes dryas.<BR=
>
&nbsp=3B<BR>
Sincerely=2C<BR>
&nbsp=3B<BR>
James<BR>&nbsp=3B<BR>
<DIV>

<HR id=3DstopSpelling>
From: bobathome@hfx.eastlink.ca<BR>To: naturens@chebucto.ns.ca<BR>Subject: =
Re: [NatureNS] Bluet Photos<BR>Date: Sun=2C 11 Sep 2011 12:27:54 -0300<BR><=
BR>
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<DIV><FONT face=3DArial>Hi James=2C</FONT></DIV>
<DIV><FONT face=3DArial></FONT>&nbsp=3B</DIV>
<DIV><FONT face=3DArial>Well=2C as I expect you know=2C species of some gro=
ups of odes are so similar that they cannot be positively identified in the=
 field or from photos.&nbsp=3B This is true of the spreadwings=2C bluets an=
d the meadowhawks to name a few groups. They must be captured and the male =
terminal appendages examined with a hand lens (or microscope) and compared =
to a chart as those found on page 32 (for the bluets)&nbsp=3Band page 20 (f=
or the spreadwings) in the Massachusetts Dragonflies/Damselflies field guid=
e.&nbsp=3B Interestingly=2C although some 19 species of bluets are covered =
in the guide=2C of which 11 occur in Nova Scotia=2C river bluet is not one =
of the 19.&nbsp=3B Could you give the scientific name and possibly the basi=
s for your&nbsp=3Btentative ID?</FONT></DIV>
<DIV><FONT face=3DArial></FONT>&nbsp=3B</DIV>
<DIV><FONT face=3DArial>Despite all of the above=2C I would be pleased to t=
ake a look at your photos.&nbsp=3B Thanks for your report.</FONT></DIV>
<DIV><FONT face=3DArial></FONT>&nbsp=3B</DIV>
<DIV><FONT face=3DArial>Bob McDonald</FONT></DIV>
<DIV><FONT face=3DArial>Halifax</FONT></DIV>
<DIV><FONT face=3DArial></FONT>&nbsp=3B</DIV>
<DIV>&nbsp=3B</DIV>
<DIV>&nbsp=3B</DIV>
<DIV>&nbsp=3B</DIV>
<DIV><B>From:</B> <A title=3Djrhbirder@hotmail.com href=3D"mailto:jrhbirder=
@hotmail.com">James Hirtle</A> </DIV>
<BLOCKQUOTE style=3D"BORDER-LEFT: #000000 2px solid=3B PADDING-LEFT: 5px=3B=
 PADDING-RIGHT: 0px=3B MARGIN-LEFT: 5px=3B MARGIN-RIGHT: 0px" dir=3Dltr>
<DIV style=3D"FONT: 10pt arial"><B>To:</B> <A title=3Dnaturens@chebucto.ns.=
ca href=3D"mailto:naturens@chebucto.ns.ca">Naturens Naturens</A> </DIV>
<DIV style=3D"FONT: 10pt arial"><B>Sent:</B> Saturday=2C September 10=2C 20=
11 11:08 PM</DIV>
<DIV style=3D"FONT: 10pt arial"><B>Subject:</B> [NatureNS] Bluet Photos</DI=
V>
<DIV><BR></DIV>
<DIV dir=3Dltr>Hi all:<BR>&nbsp=3B<BR>I also have a recent bluet photo=2C w=
hich I think is a river bluet.&nbsp=3B I would like opinions.&nbsp=3B Let m=
e know if you would like to take a crack at the id.<BR>&nbsp=3B<BR>Sincerel=
y=2C<BR>&nbsp=3B<BR>James R. Hirtle<BR>Bridgewater<BR></DIV></BLOCKQUOTE></=
DIV> 		 	   		  </div></body>
</html>=

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