stable fly

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun A fly (Stomoxys calcitrans) that sucks the blood of domestic animals and humans.

from The Century Dictionary.

• noun The biting housefly, Stomoxys calcitrans, common to Europe and North America.
• noun Another fly, Cyrtoneura stabulans, common to Europe and North America.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun Any of several medium-sized flies in the genus Stomoxys, of the family Muscidae, that includes the housefly family. The genus is unusual among members of that family, in that they suck blood from mammals.
• noun Stomoxys calcitrans.