A PHYTOPTID GALL ON ARTEMISIA CALIFORNICA 



H. V. M. HALL 



Eriophyes californica n. sp. 



Body c)'lindrical, length .14 mm., and this is three to four times the 

 diameter. The shield (Fig. 109A) is broadly crescent shaped, its horns 

 pointing to the sides and a little caudad. The dorsal seta (Fig. 109 B) is a 

 little less in length than the depth of the body. The head is short, the legs 

 short and stout. The claws are longer than the tufts which appear as 

 groups of short, blunt bristles. The number of rings in the abdomen varies 



3 



Figure 109. Eriophyes californica 



from 49 to 56. A side view shows that many of these rings run together 

 along the dorsum, and there form larger, very salient wrinkles. The caudal 

 setae are nearly half the length of the body and fairly stout ; between and 

 above these are two short fine bristles. Other minor characters will be 

 evident from the figures. 



