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TaxonomyBrowse
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Species Toxomerus marginatus

Toxomerus marginatus ? - Toxomerus marginatus - female Toxomerus marginatus - female Toxomerus marginatus? - Toxomerus marginatus - female Milesiini? - Toxomerus marginatus - male Shortage of black on my Toxomerus - Toxomerus marginatus - male Syrphid Fly - Toxomerus marginatus - male Toxomerus - Toxomerus marginatus - male - female Hoverflies - Toxomerus marginatus - male - female
Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Diptera (Flies)
No Taxon ("Aschiza")
Family Syrphidae (Syrphid Flies)
Subfamily Syrphinae
Tribe Toxomerini
Genus Toxomerus
Species marginatus (Toxomerus marginatus)
Synonyms and other taxonomic changes
Toxomerus marginatus (Say)
Orig. Comb: Scaeva marginata Say 1823
Size
5-6 mm
Identification
Key to common species of Toxomerus:

larva shown at Bugg et al. (2008) (1), fig. 33
Range
across Canada to C. Amer. (2)
Season
variable, but mostly Apr-Nov (BG data)
Food
Larvae prey on aphids, thrips, small caterpillars
Adult feed on a wide range of flowers - Wiki
Life Cycle
Puparium

When the pupa is exposed to heat, the adults look very pale and orange, if they develop under cold conditions, they turn much darker, sometimes nearly completely black. (Comment by Martin Hauser)
Remarks
very common; larvae prey on many plant pests
Males have holoptic eyes

1. Female . . . . . . . . . 2. Male
Internet References