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

National Moth Week photos of insects and people. Here's how to add your images.

Photos of insects and people from the 2019 BugGuide Gathering in Louisiana, July 25-27

Discussion, insects and people from the 2018 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


Family Ditomyiidae

6007713 Sciarid or Cecidomyid? - Symmerus - female Fungus Gnat - Symmerus - male Ditomyiidae - thorax - Symmerus lautus - male Diptera, end of abdomen - Symmerus lautus - male Ditomyiidae - wing - Symmerus lautus - male Ditomyiidae - lateral - Symmerus vockerothi - male fungus gnat - Ditomyia - female Diptera. Chironomidae? - Symmerus
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Diptera (Flies)
No Taxon ("Nematocera" (Non-Brachycera))
Infraorder Bibionomorpha (Gnats, Gall Midges, and March Flies)
Superfamily Sciaroidea (Fungus Gnats and Gall Midges)
Family Ditomyiidae
Explanation of Names
Ditomyiidae Keilin 1919
6 spp. in 2 genera in our area(1)(2), ~100 spp. in 8 genera total(3)
Distinguished from other fungus gnats by wing ventation: M-Cu crossvein present and R4 at least half as long as R5; SC short and ending free.
all major zoogeographical regions exception Afrotropical; in our area, more diverse in the east, with only the subgenus Symmerus (Psilosymmerus) represented in the west(2)
Symmerus larvae were reported from rotting logs of dead wood; those of Ditomyia, from Polyporus fungi(4)
Internet References