Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada
Clickable Guide
Moths Butterflies Flies Caterpillars Flies Dragonflies Flies Mantids Cockroaches Bees and Wasps Walkingsticks Earwigs Ants Termites Hoppers and Kin Hoppers and Kin Beetles True Bugs Fleas Grasshoppers and Kin Ticks Spiders Scorpions Centipedes Millipedes

Upcoming Events

Discussion, insects and people from the 2018 BugGuide Gathering in Virginia, July 27-29

Photos of insects and people from the 2015 gathering in Wisconsin, July 10-12

Photos of insects and people from the 2014 gathering in Virginia, June 4-7.

Photos of insects and people from the 2013 gathering in Arizona, July 25-28

Photos of insects and people from the 2012 gathering in Alabama

Photos of insects and people from the 2011 gathering in Iowa

Photos from the 2010 Workshop in Grinnell, Iowa

Photos from the 2009 gathering in Washington

Fly With a Round Head - Cephalops - female

Fly With a Round Head - Cephalops - Female
Near Ruraldale, Upshur County, West Virginia, USA
July 24, 2006
Size: 7.7 mm
So often with flies I am amazed by the size of their eyes. This one's head seems to be all eyes, giving the head a ball-like appearance. Attracted to lights.

ID help appreciated.

Cephalops sp.
Moved from Big-headed flies to new genus page as per Jeff's ID.

Thanks and ID
Many thanks for comments on this interesting fly. I sought out an ID some time ago from the Nearctic expert on the family, Jeff Skevington, and he was kind enough to reply. I have been remiss about not getting the ID posted here. Anyhow, here it is (I had asked about determining the sex too):

"Great photo! It is a female of the genus Cephalops. The sexes are pretty easy to tell apart. Females have an obvious ovipositor (seen in lateral view so not in your photo) and are dichoptic (eyes separated). Males have the eyes joined in all but one genus (Nephrocerus) and a few oddball species." --Jeff Skevington.

I think this is Nephrocerus, which would be a very cool find

Awesome - I think we do not have this family in the guide. It is a Pipunculidae, they are supposed to be the sister group of Syrphidae and they are all parasites in leafhoppers and planthoppers. They are called (for obviouse reason) Big-headed flies.

Thank-you Martin
Thank-you, Martin. My first thought was Syrphidae, but it didn't look quite right. Always exciting to have a new family for BugGuide. Thanks for the ID!

Comment viewing options
Select your preferred way to display the comments and click 'Save settings' to activate your changes.