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Photos of insects and people from the 2022 BugGuide gathering in New Mexico, July 20-24

National Moth Week was July 23-31, 2022! See moth submissions.

Photos of insects and people from the Spring 2021 gathering in Louisiana, April 28-May 2

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

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Previous events


Family Ditomyiidae

6007713 Sciarid or Cecidomyid? - Symmerus - female sexually dimorphic Diptera - maybe a midge? - Symmerus - male - female Ditomyiidae - thorax - Symmerus lautus - male Diptera, end of abdomen - Symmerus lautus - male Ditomyiidae - wing - Symmerus lautus - male Ditomyiidae - terminalia - Symmerus vockerothi - male Fungus Gnat - Symmerus - female fungus gnat - Ditomyia - female
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