ARACHNIDA 



109 



The mouth parts are more or less united to form a beak. The 

 common red mite suclcs the juices of the house plants which it 



Fig. 80. — The chicken mite {Dermanys' sus galli'nm): a, Adult; b, tarsus; 

 c, mouth parts; d and e, young. All much enlarged. (Osborn, U. S. Bu- 

 reau of Ent., 1907). 



'4 i^-' ) I 



Fig. 81. — Cattle tick (enlarged). (After Salmon and Stiles.) 



infests. One mite (Dem'odex) is parasitic in the hair-follicles of 

 the dog, cat, sheep, cow, horse, and man. Another mite 



