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

Calendar
Upcoming Events

Discussion of 2018 gathering

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

TaxonomyBrowseInfoImagesLinksBooksData
Photo#56073
Midge - Chasmatonotus unimaculatus

Midge - Chasmatonotus unimaculatus
Woburn, Middlesex County, Massachusetts, USA
June 5, 2006
Size: 2.8mm
This is just like one I found in NH a year ago 1.

Moved
Moved from Chasmatonotus.

Thanks John
This one does look pretty distinctive, and I remember it running around like crazy on the leaf surface, kind of like a phorid.

Chasmatonotus (Orthocladiinae)
I was going to tentatively guess Orthocladiinae. Then I checked Marshall(1) and saw the picture of Chasmatonotus. This is a (partly?) ground-mating genus with similar, short antennae in both sexes. "The genus Chasmatonotus is readily distinguishable from any other chironomid genera by having a median longitudinal fissure on the mesoscutum." (Quoting from a paper on Japanese species.) The wing pattern is unusual if not unique. This picture might even be identifiable to species with descriptions of all the candidates in hand.

The genus was originally described from New Hampshire and is now known from much of North America and Japan.

Your other pictures aren't clear enough to see the line on the back but I can't imagine what else they could be but more of the same genus.

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