What's new

Winged critters

Joined
Mar 24, 2002
Messages
173
Location
Minnesota
I went out to get some pics of utricularias yesterday, but I couldn't get a clear shot through the cattails. on the other hand I did get some decent shot of some winged critters.

image1917di.jpg


image208ad.jpg


image231ud.jpg


image39tc.jpg


image56uh.jpg


image68uj.jpg


Chris
 

Presto

wicked good plants!
Staff member
Moderator
Joined
Oct 17, 2005
Messages
1,257
Location
Boston
wow, these are great shots!  I worked doing dragonfly research for two summers...some of these are as good if not better than the pictures in field guides!

would you like a crash course in odonatology (the study of dragonflies and dragonflies)?  too bad, you're getting one anyway!  
smile_m_32.gif


the first two and bottom three are all damselflies.  the third is a dragonfly.  the obvious difference between the two groups is the size...dragonflies are, for the most part, larger.  you can also tell the difference by the two pairs of wings.  in dragonflies, the front pair differs in size/shape from the back pair; in damselflies they are nearly identical.  (it's hard to see both pairs of wings in the damsels, since they rest with their wings all folded together and held upright).  also, damselflies' eyes are situated on opposite sides of the head, while dragonflies' are on the top, and touch in the middle.

the top two are Calopteryx maculata (sorry, I don't know the common names!).  fairly common, at least in reasonably clean water.  their wings are so beautiful!

I'm not entirely certain on the identity of the dragonfly.  it is in the genus Libellula.

the fourth, again, I'm not certain on.  he (yes, it's a male) is in the genus Enallagma, which consists of several species that, in my opinion, all look exactly the same.  the spot patterns on the abdomen tell the species, but I never learned how to distinguish them.  it takes a trained eye and, in some cases, a microscope.

the last two are Nehalennia, which are some of my favorites.  one of the first odonates I caught was a Nehalennia gracilis, which is what I think these are.  it was very exciting, because it was a town record at a site where we weren't expecting to find it.  its common name is the Sphagnum Sprite, and as it implies, N. gracilis lives by swamps with sphagnum.  so, since we didn't know there was any sphagnum at the site, we didn't know to look for it!
 
Joined
Mar 29, 2005
Messages
907
Location
Wisconsin
Yesterday at work I had a damselfly very similar to the bottom 2 fly up and land on my fingure, it stayed there for a few minutes until I had to shake it away so I could get back to work.
It was more of a light brown color.
 
Joined
Aug 2, 2005
Messages
451
Location
MIT, Cambridge, MA
the 3rd one is libelulidae and the rest are coenigrionadae

edit: i should of read the entire topic... presto already identified them and to the species ... BRAVO!
 
Joined
Mar 24, 2002
Messages
173
Location
Minnesota
Thanks for IDing the critters.

The jewelwings (Calopteryx maculata) are some of my favorites. That irridesent blue or green colors are a real eye catcher.

Hmmm... I have never seen a single strand of shagnum growing in the area where I photographed those Nehalennia gracilis.
 
Joined
Oct 28, 2003
Messages
1,211
Wow beautiful! Thanks for sharing! Don't think I've ever seen the first two before round here.
 
Top