Aug. 20, 1917 



Cyclamen Mite 



381 



chitinized and of a brownish color. The capitulum is quite prominent, 

 extending to nearly the middle of the first segment in the forelegs. It 

 possesses a pair of hook-shaped upper jaws which together form a pair 

 of pincers. Two short bristles are placed laterally. 



The cephalothorax is as broad as long. The epimera of the first pair 

 of legs are united to a median piece, or the epimera meet at an angle at 

 the middle line and then form a narrow longitudinal keel that extends 

 to the end of the cephalothorax. The epimera of the second pair of 

 legs are united similarly as those of the first epimera. The ends of this 

 median longitudinal sternum, 

 or keel, curv^e outward to the 

 sides of the body and form the 

 boundary of the cephalothorax. 

 The cephalothorax possesses 

 two long touch bristles (fig. 2, A) 

 which arise dorsally about the 

 point between the first and 

 second pair of legs. In front 

 of the long touch bristles the 

 female possesses, between the 

 first and second pair of legs and 

 under the back shield, a pair 

 of club-shaped hairs or organs 

 which are planted in small 

 shallow cups. The object of 

 these organs is unknown. Per- 

 haps they are balancing organs 

 or auditory organs, or possibly 

 both at the same time. 



The abdomen is longer and 

 broader than the cephalotho- 

 rax, and has three short bristles Fig. s.—Tarsonemus palUdus: KAuMlemaXe:. Much enlarged. 



on each side and a pair near (Ongmai.) 



tip of body. The legs of the anterior group are subequal. The legs are 

 short but rather slender, with few hairs. Tarsus I has a subbasal clavate 

 hair, with a long hair near by, a pair near the tip above, and a clavate 

 hair just before them. The third pair of legs are more slender than the 

 forelegs; the segments have grown together, the third segment being real 

 long. On the fourth pair of legs only three parts were distinguished, the 

 parts being grown together more or less. It is noteworthy that on the 

 sole of the leg I only one claw (fig. 2, B) is seen, and on leg II and III 

 two small claws, while leg IV terminates in two appendages, one of which 

 is acicular, the other twice the length of this, a long curved hair that 

 gradually becomes exceedingly fine. 



