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


TaxonomyBrowse
Info
ImagesLinksBooksData

Species Eristalis dimidiata

Eristalis dimidiata Wiedemann - Eristalis dimidiata syrphid Fly - Eristalis dimidiata Unknown - Eristalis dimidiata Quebec fly - Eristalis dimidiata White-striped black fly - Eristalis dimidiata Syrphid Fly - Eristalis dimidiata - female Syrphid Fly - Eristalis dimidiata Eristalis dimidiata
Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Diptera (Flies)
No Taxon ("Aschiza")
Family Syrphidae (Syrphid Flies)
Subfamily Eristalinae
Tribe Eristalini
Subtribe Eristalina
Genus Eristalis
No Taxon (Subgenus Eoseristalis)
Species dimidiata (Eristalis dimidiata)
Synonyms and other taxonomic changes
Eristalis dimidiata Wiedemann, 1830. Synonyms, etc.:
Eristalis dimidiatus (spelling/gender)
Explanation of Names
From Latin dimidi "half" or "to halve" (1).
Size
10-13 mm (Syyrphidae of Oklahoma), 10-14 mm (reported for Canadian specimens)
Identification
Wings clear (or slightly darkened), antennae, thorax, facial stripes and cheeks black. Thorax has dense, short, whitish hairs. Abdomen dark with whitish abdominal rings and often with an incomplete yellow band on tergum 2 and/or 3. Basal half of tibiae pale whitish, typically sharply demarcated (Syrphidae of Oklahoma). See images such as these:
  

Note that species-level identification in this genus can be quite challenging!
Range
Eastern North America (guide images)
Habitat
Typically found on flowers in open areas.
Season
April-October (Oklahoma, Ontario)
Print References
Borror, entry for dimidi (1)
Marshall--photo 469.2 (2)
Works Cited
1.Dictionary of Word Roots and Combining Forms
Donald J. Borror. 1960. Mayfield Publishing Company.
2.Insects: Their Natural History And Diversity: With a Photographic Guide to Insects of Eastern North America
Stephen A. Marshall. 2006. Firefly Books Ltd.