130 MISC. PUBLICATION 631, U. S. DEPT. OF AGRICULTURE 



Mississippi, Tennessee, Ohio, Michigan, Illinois, Minnesota, Iowa, South Dakota, 

 Kansas, Texas, Montana, Idaho, Colorado, Utah, New Mexico, Arizona, Califor- 

 nia. Neotropical Region : Mexico, Guatemala, Costa Rica, Colombia, Galapagos 

 Islands, Brazil, Peru, Uruguay, Chile, Argentina, Patagonia, Falkland Islands. 

 Palaearctic Region: Iceland, Faeroes, Ireland, Scotland, England, Portugal, 

 Spain, France, Netherlands, Italy, Corsica, Sicily, Malta, Sweden, Finland, Lap- 

 land (Swedish), Denmark, Germany, Poland, Czechoslovakia, Austria, Hungary, 

 Yugoslavia, Rumania, Greece, European Turkey, European Russia, Azores, 

 Canary Islands, Madeira, Morocco, Algeria, Libia, Egypt, Kamchatka, China, 

 Manchuria, Chosen, Japan. Ethiopian Region : Zanzibar, Southern Rhodesia, 

 South Africa (Transvaal, Natal, Cape of Good Hope). Australian Region: 

 Western Australia, New South Wales, New Zealand, New Guinea, Hawaiian 

 Islands, Antarctic Islands. 



Life History and Pathogenesis. — The breeding habits of this fly 

 are extremely varied. It is common in excrement, human and animal, 

 though, according to Lesne, it does not breed in cesspools in the vicinity 

 of Paris. It has been reported from decaying vegetable matter 

 (onions, fungi), from dead insects, from vertebrate cadavers, from 

 birds' nests, from the nests of Hymenoptera, and from food sub- 

 stances, such as fruits, smoked or salted meats, and cheese and other 

 milk products. It has been reported as a parasite of Orthoptera, 

 Coleoptera, and snails: in at least some of these cases, however, it 

 may have been living as a saprophyte. The adults frequent houses, 

 but in smaller numbers than houseflies. The life cycle, in mid- 

 summer in temperate climates, may be completed in a month or less. 



The larva, often in association with other species, has been recorded 

 a number of times in intestinal myiasis ; it is the most common cause 

 of vesicular myiasis. Two cases of cutaneous myiasis in monkeys have 

 been reported. In one. recorded by Carter and Blacklock (#4), the 

 maggots, in association with those of CaUiphora vicina (erythro- 

 cephala) and Mmcina stabulans', were found in wounds in the mouth 

 and nasal region and on the abdomen of a monkey dying of tubercu- 

 losis; the other case was recorded by Seguy, without details. It has 

 also been recorded in aural myiasis. 



Literature. — An account of the immature stages, biology, and 

 pathogenesis is given by Hewitt (-55, p. 102) ; a detailed description 

 of the larva and of urinary myiasis caused by it is given by Chevrel 

 (07, pp. -398-4H) . 



FANNIA FUSCONOTATA (Rondani) 



Geographical Distribution. — Neotropical Region : Argentina. 



Pathogenesis. — A case of vesicular myiasis was caused by a larva 

 questionably identified as this species. No adults were reared. The 

 patient suffered abdominal pains, malaise, low fever, and difficulty 

 in urination; small quantities of blood were passed with the urine. 

 An account of the case, with a description and photographs of the 

 larvae, is given by Mazza and coworkers (87) . 



FANNIA LEYDII (Walsh) 



FANNIA WILSONI (Walsh) 



These species were described from larvae obtained from cases of 

 intestinal myiasis in Illinois. No adults were reared, and it is doubt- 

 ful whether the identity of the species can ever be determined. 



