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

Discussion, insects and people from the 2018 BugGuide 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

Photos from the 2010 Workshop in Grinnell, Iowa

Photos from the 2009 gathering in Washington


Meadowlark Botanical Gardens, Vienna County, Virginia, USA
May 31, 2013
Found this on a plant populated by a lot of red aphids.


Moved from Syrphid Flies.

Free range predatory Syrphidae larvae can move to the Syrphinae larvae page, Eristalinae are aquatic or mud dwellers.

I probably should have put it there originally.

Ah - wonderful! I didn't rea
Ah - wonderful! I didn't realize the distinction (I knew about some Eristalinae, but not the rest). Are Microdontinae exclusive to ant nests?

Another source
Ståhls et al. 2003

"In contrast to the fairly uniform flower-feeding habits of adult syrphids, larvae are found in a very diverse array of habitats. Those of subfamily Eristalinae are saprophagous in dead wood, coprophagous, phytophagous, aquatic filterfeeders or inquilines in social insect nests, whereas larvae of Microdontinae are inquilines in ants' nests, and larvae of Syrphinae are mostly predaceous on soft-bodied Homoptera."

Thanks! (I'll be less lazy n
Thanks! (I'll be less lazy next time; I appreciate the refs)

Looks like I should go through the larvae/immature stages page, then.

See Manual of Nearctic Diptera volume 2 page 717, second paragraph of "biology and behavior." Microdontinae are said to live only in ant nests. All Eristalinae seem to live "in" something, rather than "on" like Syrphinae.

Moved from ID Request.

Probably near here
eating the aphids

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