188 



DIPTERA OF MINNESOTA. 



This important family, Oestridae, contains about seventy or more 

 species, and it is claimed that for the most part each species is confined 

 to one species of mammal. Williston states that seven species of 



Fig. 130. Cuterebra biiccota. Enlarged. Lugger. 



Gasirophilus are found in the stomach and intestine of the horse and 

 ass. Thirteen species of Hypoder)iia are known to live under the 

 skin of the horse, the ox, the buffalo, the sheep and the goat ; four 

 species are found on the antelope and the musk deer. A species 

 is also found on the reindeer, and bots have been found in the neck of 

 a hog, possibly Ccphcnoniyia, which infests deer. We have no proof 

 of members of this family attacking birds or reptiles. That some of 

 its members at times, in common with certain Mnscidcu, attack man, 

 we have undisputed evidence. As mentioned above, the ox warble 

 has been known to attack parties taking care of cattle, lineata having 

 been positively identified in a human host, and hovis in Europe is 

 said to have been also identified in man. 



Fig. 131. C. horripihim. ICnlarged. Lugger. 



