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

Species Oestrus ovis - Sheep Nasal Bot Fly

Sheep Nasal Bot Fly - Oestrus ovis
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Diptera (Flies)
No Taxon (Calyptratae)
Superfamily Oestroidea
Family Oestridae (Bot Flies)
Subfamily Oestrinae (Nose Bot Flies)
Genus Oestrus (Nasal Bot Flies)
Species ovis (Sheep Nasal Bot Fly)
Adult length: 10-12 mm (1)
nearly cosmopolitan (1)
Obligatory parasites in the nasal cavities of sheep; can cause zoonotic myiasis in humans (usually manifesting as ophthalmomyiasis) (1). It can also parasitize deer and goats.
Internet References
Works Cited
1.Myiasis of Man and Animals in The Old World
Zumpt F. 1965. London: Butterworths.