Bradysia

{{Short description|Genus of flies}}

{{Automatic taxobox

| image = Bradysia.praecox.-.lindsey.jpg

| image_caption = Bradysia praecox from Commanster, in the Belgian High Ardennes

| taxon = Bradysia

| authority = Winnertz 1867{{cite web |title=Genus Bradysia |url=https://bugguide.net/node/view/269092 |website=BugGuide |publisher=Iowa State University Department of Entomology |accessdate=2019-08-17}}

| synonyms = * Dasysciara Kieffer, 1903

• Neosciara Pettey, 1918
• Fungivorides Lengersdorf, 1926
• Lamprosciara Frey, 1948
• Paractenosciara Sasakawa, 1998

| synonyms_ref =

| subdivision_ranks = Species

| subdivision = See text

}}

Bradysia is a genus of fungus gnat in the family Sciaridae.{{Cite web|url=http://entnemdept.ufl.edu/creatures/orn/darkwinged_fungus_gnats.htm|title=darkwinged fungus gnats - Bradysia spp.|website=entnemdept.ufl.edu|access-date=2019-08-18}}{{cite journal|last1=Köhler|first1=Arne|last2=Menzel|first2=Frank|s2cid=23947245|title=New records of Black Fungus Gnats (Diptera: Sciaridae) from New Caledonia, with the description of two new Bradysia species and an updated checklist|journal=Zootaxa|publisher=Magnolia Press|volume=3718|issue=1|pages=63–72|doi=10.11646/zootaxa.3718.1.5|pmid=26258208|year=2013}}a They are commonly known as darkwinged fungus gnats. They are considered a major pest in greenhouse agriculture because they thrive in the moist conditions common inside greenhouses and feed on the plants being grown within.{{Cite journal|last=Cloyd|first=Raymond|date=2015-04-09|title=Ecology of Fungus Gnats (Bradysia spp.) in Greenhouse Production Systems Associated with Disease-Interactions and Alternative Management Strategies|journal=Insects|volume=6|issue=2|pages=325–332|doi=10.3390/insects6020325|issn=2075-4450|pmc=4553482|pmid=26463188|doi-access=free}} Bradysia is a large genus containing over 500 living species,{{Cite web|url=http://www.catalogueoflife.org/col/browse/tree/id/093b2e73a9ed250eca95e344628496a2|title=Browse Bradysia|last=|first=|date=|website=Catalogue of Life|archive-url=https://web.archive.org/web/20190818043142/http://www.catalogueoflife.org/col/browse/tree/id/093b2e73a9ed250eca95e344628496a2|archive-date=2019-08-18|access-date=2019-08-18|url-status=dead}} with at least 65 species found in North America and 172 in Europe.{{Cite web|url=https://fauna-eu.org/cdm_dataportal/taxon/607aec20-3f50-4709-b690-c0215042e203|title=Bradysia Winnertz, 1867|last=|first=|date=|website=Fauna Europaea|archive-url=|archive-date=|access-date=2019-08-18}}

Bradysia species are a major pollinator of plants such as Aspidistra elatior.{{Cite journal|last1=Suetsugu|first1=Kenji|last2=Sueyoshi|first2=Masahiro|date=2018-01-01|title=Subterranean flowers of Aspidistra elatior are mainly pollinated by not terrestrial amphipods but fungus gnats|journal=Ecology|volume=99|issue=1|pages=244–246|doi=10.1002/ecy.2021|pmid=29136275|bibcode=2018Ecol...99..244S |hdl=20.500.14094/90004538 |issn=1939-9170|url=http://www.lib.kobe-u.ac.jp/repository/90004538.pdf}}