828 THE DIPTERA 



proceed to pupation. G. pecorum Fabricius, 1794, is stated to 

 frequently attack man in Siberia. 



Fig. 420. — Gastrophilus equi Fabricius. (X Si-) 



Dermatobia Brauer, i860. 



Dermatobia cyaniventris Macquart, 1843. 



Synonyms. — Cuterebra noxialis Goudot, 1845; 

 Dermatobia noxialis Brauer, i860; Dermatobia 

 hominis Say, 1822; (Estrus hominis Gmelin, 1788. 



There appears to have been great doubt as to 

 whether D. noxialis is the same as or different 

 from D. cyaniventris. At present, on the strength 

 of R. Blanchard's observations, it is usual to 

 look upon them as the same. The larva of this 

 species is found in the skin of man in tropical 

 America at times, and is known by various local 

 names: ' Ver moyoquil ' in Mexico; ' ver macaque ' 

 in Cayenne; ' torcel ' in Venezuela; ' nuche ' in 

 Colombia; ' ura ' and 'berne' in Brazil; ' cor- 

 mollote ' and ' anal coshol ' in British Guiana; 

 ' nuche ' or ' gusano ' in New Granada. 

 The fly, which has a yellowish head aild dark 

 blue abdomen, is supposed to lay its eggs on the skin of domestic 

 and wild animals and man. The larvae from these eggs are supposed 

 to enter the skin. The usual areas affected are the head or trunk. 



Fig. 42 1. — Larva 

 OF Gastrophilus 

 equi Fabri- 

 cius. (X3-) 



