Cordulegaster naiad – which species? - Cordulegaster

Moved

Moved from Cordulegaster.

… Ben Coulter, 31 October, 2013 - 7:38pm

login or register to post comments

Moved

Moved from Cordulegaster.

… Ben Coulter, 31 October, 2013 - 7:38pm

login or register to post comments

Moved

Moved from Dragonflies.

… Ben Coulter, 31 October, 2013 - 7:38pm

login or register to post comments

Moved

Moved from ID Request.

… john and jane balaban, 21 August, 2013 - 10:54pm

login or register to post comments

New images added here ...

I posted the recent pics at my blog. Again, not all from the same individuals, but I didn't want to kill or injure a naiad just to obtain an image of the mouth parts and associated setae ~ http://joebartok.blogspot.ca/2013/08/cordulegaster-naiad.html

… Joe Bartok, 10 August, 2013 - 3:50pm

login or register to post comments

Thanks

Ben – thanks for posting that key, that was a great help!

I re-visited the stream and examined/photographed more naiads. A bit of doubt with regard to the setae, but the weight of the evidence points toward Cordulegaster maculata.

I'm not certain how to post the images here as they are from different specimens (and hence possibly different species) and thereby shouldn't be linked.

… Joe Bartok, 10 August, 2013 - 3:02pm

login or register to post comments

Key

A key to northeastern species of Cordulegaster can be found here:

http://insects.ummz.lsa.umich.edu/MICHODO/test/Corduleg.htm

Note that the key is for mature larvae, so it might not work for earlier instars. If you have the time, you could attempt to rear it to adulthood.

… Ben Coulter, 9 August, 2013 - 2:54pm

login or register to post comments