120 



ACARINA OR MITES. 



be met with. This varied coloration is due to both age and 

 food. These mites are so minute that they can scarcely be seen 

 on the leaves without a lens. This and some others of the 

 genus {T. feJarius) spin webs of fine silk on the under-sides of 

 the leaves. The legs, which are provided with bristles, take a 

 prominent part in the weaving of this web, guiding the micro- 



■ 50. — Hab\hst Bui; {Liptus aittinmudi.':), the larva of T. liolosericeum (magnified 

 100 diameters). Railliet. (From Neumann.) 



scopic silken thread as it issues from the conical papilla near the 

 anus of the mite. In and under this webbing the mites live 

 and breed. The females lay their rather large globular eggs in 

 this web. vSometimes the ova are colourless, at others they have 

 ii golden hue. Incubation takes place in from six to eight days, 

 the young or larval mite being colourless, and has only six legs. 

 After repeated ecdyses, the normal number of legs is attained. 

 All these stages may be found in a single web at one time. The 



