Family of flies
Carnidae, also known as bird flies or filth flies, is a family of flies (Diptera). There are 6 genera, containing about 93 species worldwide.
Description.
Carnidae in general are small (1–2 mm) black flies.
One feature of Carnidae is the frons of the head having some orbital setae medioclinate (pointing inwards) and others lateroclinate (pointing outwards). In "Carnus", "Hemeromyia", "Meoneura" and "Enigmocarnus", the anterior two pairs of setae are medioclinate and the posterior two pairs are lateroclinate. In "Neomeoneurites" and the extinct genus "Meoneurites", the anteriormost pair is medioclinate and the posterior three pairs are lateroclinate.
Ecology.
Most Carnidae are saprophagous. Adults have been found on dung, carrion, flowers of Apiaceae and other plants, in bird nests and sometimes in bird feathers. Larvae have been found in bird and mammal nests, damaged pupae of "Sarcophaga" sp. (Sarcophagidae), stems of "Ferula" sp. (Apiaceae), "Leccinum" fungus (Boletaceae), dung, salted fish and plant remains.
Adults of "Carnus" such as "C. hemapterus" and "C. orientalis" are exceptions, feeding on blood of birds. They are associated with bird nests and nestlings.
External links.
Dedicated site 
References.
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