A few species gender Fannia often found breeding in the animal manure and livestock facilities to intensive production. The most common is the housefly and lesser. Fannia canicularis (L.). It is smaller than the housefly popular, because it only measures 5-6 mm in length.

The adult is gray-black, with three black stripes diffuse arranged longitudinally on the back of the chest. The sides of the thorax are of color more clear; the legs are black and the halterios yellow.

The head is gray with stripes front and black sides, gray. The mouthparts of the fly, lesser, are the type esponjan-you-succionante due to its fleshy structure and the method of blending the food before ingestion. This small fly that lives in the poultry farms, their larvae are different from those of a housefly.

The larvae of Fannia canicularis is rough, brown and flattened the back ventrally, the life cycle is slightly longer in comparison to the housefly, and this fly does not tolerate high temperatures, the adults are characterized because their flight is slow and in circles, in addition of that it is typical to observe them circling about the pens or cages.

As in the case of the housefly common, the eyes of the male are almost together (holópticos), while those of the female are more separated (dicópticos).

The antennas are similar to those of the housefly popular, but the edge respective is thin and appears covered with a fine pubescence. The basal part of the abdomen is yellow.

The adults of the species very close Fannia scalaris (Fabr.) you seem to be, but they can be distinguished by the presence of a clear crest in the apical part of the tibia of the second pair of legs. Fannia canicularis lacks of this ridge.

It is known to Fannia scalaris as fly to the latrines for its presence in the toilets.

It is less usual in animal manure.

In these photos James Lindsey at The Ecology of Commanster appreciate other varieties of Fania, as well as the shape of its wings.