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Home » Guide » Arthropods (Arthropoda) » Insects (Insecta) » Alderflies, Dobsonflies, and Fishflies (Megaloptera) » Dobsonflies and Fishflies (Corydalidae) » Fishflies (Chauliodes) » Spring Fishfly (Chauliodes rastricornis)
Photo#308054
Unknown insect - Chauliodes rastricornis
Copyright © 2009 sully5604

Unknown insect - Chauliodes rastricornis
Kane County, Illinois, USA
July 18, 2009
Size: 3" long approx
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Contributed by sully5604 on 21 July, 2009 - 8:32pm
Last updated 15 August, 2009 - 12:14am

Moved
Moved from ID Request.
… Mark Fox, 15 August, 2009 - 12:14am login or register to post comments

Fishfly
The name "Dobsonfly" is most often applied to Corydalus. This appears to be a female Chauliodes rastricornis or Spring Fishfly. (Cf. image here.) Notice the two dark rectangular marks at the back of the head (characteristic of the species) and the thin serrate antennae that indicate that it is a female. The collection date seems unusually late for this species, and I believe it would be the latest adult data point recorded in the guide.
… Lloyd Gonzales, 22 July, 2009 - 11:48am login or register to post comments

unknown insect
Looks like it might be a Dobsonfly female. Do a search for them and see some images I posted.
… Jim Harmon, 21 July, 2009 - 10:48pm login or register to post comments

 
Thanks!
Jim, Looks like you are right on the money with Dobsonfly. I appreciate the help.
… sully5604, 22 July, 2009 - 8:40am login or register to post comments

 
Unknown insect
Interesting info on them. They live in the water for 2 years and winter in a cocoon. After emerging in the summer, they live for 7 days to breed and die. Do a google search on them.
… Jim Harmon, 22 July, 2009 - 9:45am login or register to post comments

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