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Home » Guide » Arthropods (Arthropoda) » Hexapods (Hexapoda) » Insects (Insecta) » Alderflies, Dobsonflies, and Fishflies (Megaloptera) » Dobsonflies and Fishflies (Corydalidae) » Fishflies (Chauliodinae) » Chauliodes » Spring Fishfly (Chauliodes rastricornis)
Photo#3613
Fishfly - Chauliodes rastricornis - female
Copyright © 2004 Troy Bartlett

Fishfly - Chauliodes rastricornis - Female
Parson's Run, Duluth, Fulton County, Georgia, USA
April 7, 2004
Serrate instead of bipectinate antennae identify this female. She has a light dusting of pollen which was everywhere when this was taken.

Other photos of same specimen:
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Contributed by Troy Bartlett on 3 May, 2004 - 4:01pm
Last updated 18 March, 2005 - 7:43pm

C. rastricornis, I think!
Aha! I took a glance at this, and the pattern on the head, plus antennae looks like C. rastricornis, described in Megaloptera of Florida. Both sexes of C. pectinicornis have pectinate antennae, neither have serrate. These are serrate, so it should be a female C. rastricornis. Also, the date is spring, and Brimley (1) lists rastricornis for spring, and pectinicornis for summer, though that could be an incorrect generalization, because there was confusion about some id's into the 1950's, and that work dates from 1936 or so.

I need to look at another spring fishfly image I have--I'll be its C. rastricornis. The ones I see in summer all have pectinate antennae. Perhaps some knowledge at last--I've been confused about these things for a year.

My three cents!

Patrick Coin
Durham, North Carolina

Patrick Coin
Durham, North Carolina
… Cotinis, 12 November, 2004 - 12:48pm login or register to post comments

 
Good research
I have quite a few images of others that came to my lamp this year. This'll be useful when I sort those out. We might end up with pretty good coverage of these.
… Troy Bartlett, 12 November, 2004 - 12:52pm login or register to post comments

Pollen on Chauliodes!
Wow Troy, I've seen this before and didn't think much about it. I wonder if they do feed a little as adults? Brimley (1) says that Chauliodes comes to "sugar", meaning moth bait. Maybe they take some nectar.

Patrick Coin
Durham, North Carolina
… Cotinis, 11 November, 2004 - 6:43am login or register to post comments

 
Pine pollen
That was pine pollen which at that time of year pretty much gets everywhere. In this case I don't think it would be related to feeding. That's interesting about being attracted to moth bait. I think am going to try that some in my backyard next year.
… Troy Bartlett, 11 November, 2004 - 9:19am login or register to post comments

 
Pine pollen, yup! plus, Chauliodes gender
Good point about pine pollen. We have that here--the rivers run yellow in April.

You should look at that Florida reference on Megaloptera. It has good details on taxonomy of this genus. Points out, for instance, that in C. pectinicornis, both sexes have pectinate antennae. In C. rastricornis, only the male does. Has good illustrations of patterns on pronotum--says you can key on that.

Patrick Coin
Durham, North Carolina
… Cotinis, 12 November, 2004 - 6:06am login or register to post comments

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