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

Species Toxomerus geminatus

syrphid - Toxomerus geminatus - male Hover Fly - Toxomerus geminatus Another syrphid - Toxomerus geminatus - male WI071713c - 015 - Toxomerus geminatus Yellow Black Fly - Toxomerus geminatus Syrphid Fly - Toxomerus geminatus Toxomerus geminatus female? - Toxomerus geminatus Toxomerus geminatus ? - Toxomerus geminatus
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 geminatus (Toxomerus geminatus)
Other Common Names
Eastern Calligrapher(1)
Explanation of Names
Toxomerus geminatus (Say 1823)
6-7.5 mm
scutellum blackish with well-defined yellow margin; abdomen yellow with black bands that reach the margin (i.e. margin of abdomen is alternately black and yellow); tip of abdomen pointed in female, rounded in male; top of thorax dark bronzy-brown to blackish with yellow margin; wings clear; eyes large, reddish-brown; face white with thin strip projecting upward between eyes; forehead dark; antennae yellow; back of head white
Facial differences between male and female:
(male is on top)
see also(2)
e. NA (QC-FL to MN-TX)(3)
often found visiting flowers of herbaceous plants, or sometimes resting on nearby leaves

Adults found in forests, meadows, fields, savannas, marshes, bogs, and fens(1)
Larvae feed on a variety of aphids and mites(1)
Life Cycle
1. Larva 2. Puparium 3. Adult female. 4. Adult male
common to abundant
Works Cited
1.Field Guide to the Flower Flies of Northeastern North America
Jeffrey H. Skevington and Michelle M. Locke, Andrew D. Young, Kevin Moran, William J. Crins and Stephen A. Marshall. 2019. Princeton University Press.
2.Toxomerus: Key to common species
3.Thompson F.C., Pape T., Evenhuis N.L. (2013) Systema Dipterorum, Version 1.5