HARVEST-BUGS. 81 
plate VII, a fly upon which nine larve of Zrombidium mus- 
carum have fastened themselves; and in fig. 47 we have an 
enlarged illustration of one of them. | 
About the very worst pests of man and domesticated ani- 
mals ate the HARVEST-BUGS, RED-BUGS Or JIGGERS, which are 
illustrated in fig. 48. They are barely visible mites, the 

Fig. 48.—Red-bugs. The American harvest-mite at the left, the irritating 
harvest-mite at the right. Greatly enlarged. After Riley. 
young stage of a Zrombidium not yet ascertained, of a brick- 
red color and are found in large numbers among low grow- 
ing plants. They are not common in Minnesota, and it is 
to be fervently hoped will remain so forever. Men and ani- 
mals, passing through low herbage that harbors them are 
attacked by these pests, which, whenever they suceeed in 
finding a host, burrow in and under the skin, causing intol- 
erable itching and sores, the latter caused by the feverish ac- 
tivity of the finger-nails of the host, if that should be a man, 
whose energy in scratching, apparently, can not be con- 
trolled and who is bound forcibly to remove the intruders. 
The writer has been there! Those who have ever passed 
through meadows infested with red-bugs will remember the 
occasion. 
Horses and other animals in pastures suffer mainly on 
the lower part of the face; if kept in their stables the inflam- 
mation caused by the mites will soon disappear with the 
mites themselves. Dogs and cats suffer greatly in regions 
where such mites abound, and look as scabby and mangy as 
ifinfested by some itch-mite. Other animals do not escape, 
and the parasite has even been found upon the mole, field- 
