78 



THE MOSQUITO AND ITS Ji-RIENDS. 



Several ■well-authenticated instances arc on record of a species 

 of hot fly inhabiting the body of man, in Central and South 

 America, producing painful tumors under the skin of the arm, 

 legs and abdomen. It is still under dispute whether this human 

 bot fly is a true or accidental parasite, the more probable opin- 



81. Bot Fly of Ox, and Larva. 



ion being that its proper host is the monkey or dog. In 

 Cayenne, this revolting grub is called the Ver macaque (Fig. 79) ; 

 in Para, Ura ; in Costa Eica, Torcel ; and in New Granada, Gusano 

 peludo, or Nuche. The Dermatobia noxialis, supposed to be the 

 Ver moyocuil of the inhabit- 

 ants of Mexico and New Gra- 

 nada, lives beneath the skin of 

 the dog. 



The Bot fly of the 

 horse, (Gastrophilus 

 equi. Fig. 80 and lar- 

 va), is pale yellowish, 

 spotted with red, with 

 short, grayish, yellow 

 82. Sheep hairs, and the wings 

 Bot. are banded with red- 

 dish. She lays her eggs upon 

 the knees of the horse. They are conveyed into the stomach, 

 where the larva lives from May until October, and when full 

 grown are found hanging by their mouth hooks on the edge of 

 the rectum of the horse, whence they are carried out in the 



S3. Skin Bot Fly. 



