[Odonata-l] Damselfly identification please...

[Nick and Ailsa Donnelly]

There is no way at all of distinguishing cyathigerum and vernale by photo.
One has to look carefully at the cerci (top view) to see which species one
has.  The further problem is that the two intergrade extensively from
Michigan through to Quebec and Maine.  Nick Donnelly

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From: odonata-l-bounces at listhost.ups.edu
[mailto:odonata-l-bounces at listhost.ups.edu] On Behalf Of Pilon, Michel
Sent: Friday, October 20, 2006 8:20 AM
To: Odonata-l
Subject: Re: [Odonata-l] Damselfly identification please...


Hello,
 
Finally, this damselfly is from the genum Enallagma...
 
By comparing my picture with the picture and the text on the following web
site of Quebec's damselflies, I'm pretty sure it is E. cyathigerum.
http://odonatacentral.bfl.utexas.edu/fieldguide/species.asp?taxaid=688
 
Here are other pictures of other Enallagma species from Quebec. 2 of them
looks very similar to E. cyathigerum but I found some minor differences with
mine (color of legs, colors of segments, etc...)
http://odonatacentral.bfl.utexas.edu/checklists/namerica/canada_checkList.as
p?State=Quebec
 
The 2 other looking similar are E. boreale and E. civile.
 
What do you think about what I found?
 
Thank you  very much again!
 
Michel

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