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

Information, 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


TaxonomyBrowse
Info
ImagesLinksBooksData

Unidentified Sciarid Larvae and Pupae

mass larval migration larva? Sciaridae - Fungus Gnat Maggots - maybe? Sciaridae - Fungus Gnat Maggots - maybe? Creature larvae migration Parasites? Larva?
Classification
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 Sciaridae (Dark-winged Fungus Gnats)
No Taxon Unidentified Sciarid Larvae and Pupae
Remarks
Asked about the larvae that travel in large masses, sciarid specialist Rob Deady responded (9/23/2014):
"From what I gather there are several species that do this but the one I'm most familiar with is Sciara militaris (great species name) and S. thomae. See: http://www.diptera.info/forum/viewthread.php?thread_id=55348. As well as these species, apparently Cratyna perplexa, Ctenosciara hyalipennis, Bradysia bicolor and many other Sciara also may exhibit this behaviour. I wonder does Sciara humeralis exhibit this behaviour also. I found huge amounts of it in a boggy lakeside reed bed over the summer and apparently it always is found in extremely wet environments. It has to be a response to excess water logging I reckon, water is definitely the trigger but who knows.
"They generally crawl over a mucous that each larvae produces and they march in search of a drier area in which to pupate from little excerpts of work I have read and generally not to feed but this needs to be studied further. It has been suggested by some authorities that they migrate to avoid excess pressure from competition, another possibility perhaps."