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EENY490: Horn Fly Haematobia irritans irritans (Linnaeus) (Insecta: Diptera: Muscidae)

Figure 3. Side views of horn fly, Haematobia irritans irritans (Linnaeus) (left); and stable fly, Stomoxys calcitrans (Linnaeus) (right). The maxillary palpi of the horn fly are nearly as long as its proboscis, whereas the stable fly's palpi are considerably shorter than its proboscis.

Credit: horn fly—Dan Fitzpatrick, stable fly—Jerry Butler, University of Florida