Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada
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Upcoming Events

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

Photos of 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

Previous events


Unidentified Immature Stages

Syrphid Fly Larva Pupae? syrphid larva in woolly alder aphid colony Ovoid object on Baccharis pilularis leaf Larva with aphids Syrphid egg Tiny fly larva? Unknown
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Diptera (Flies)
No Taxon ("Aschiza")
Family Syrphidae (Hover Flies)
Subfamily Syrphinae
No Taxon Unidentified Immature Stages
Larvae have pairs of locomotory organs on the first six abdominal segments. These are not true prolegs because they lack musculature and crochets.
All syrphid aphid eaters are in subfamily Syrphinae. There is some advice on rearing them here.
Most syrphid fly maggots feed on aphids, thrips, leafhoppers and and other soft-bodied prey like small caterpillars. They move along plant surfaces, lift their heads to grope for prey, seize and suck them dry and then discard the exoskeleton.

A few larvae sorted out by similar appearance.
Probably many images in this section belong to the tribe Syrphini.

Many aphid eaters hide during the day and feed at night. Look for them at dawn or dusk.

To help with navigation of unidentified larvae:
Internet References
U. Cal. Flower Flies (Syrphidae) and Other Biological Control Agents for Aphids in Vegetable Crops
U. Cal. Bugg, R. L.
Cornell U. Biological Control.
Dipterist Forum. Colour Guide to Hoverfly Larvae (Diptera, Syrphidae) in Britain and Europe. Graham E Rotheray.