THE COCCIDAE OF SOUTHWESTERN UNITED STATES 



25 



Material examined. From Ephedra sp., near Lancaster, Los An- 

 geles County, and near Whitewater, San Bernardino County, Cal. 



Habit. Covered with powdery, white secretion ; lateral tassels short, 

 caudal tassels long and stout. At maturity a pad of secretion is formed 

 underlying the entire body and finally partially enveloping it. 



J ' i 



. . ' ' 



Fig. 8. Pseudococcus ephedrae (Coq.) : dorsal aspect of portion of tip of abdo- 

 men, showing anal ring and anal lobe and penultimate cerarii. 



Morphological characteristics. Length of largest specimens (flat- 

 tened on slide) 5.5 mm. Form broadly oval. Not more than eleven pairs 

 of cerarii present, some of those normally present along the anterior por- 

 tion of the abdomen and the posterior portion of the thorax being sup- 

 pressed. Anal lobe pair with fifteen to twenty conical spines, several 

 slender setae and numerous pores, all borne upon a circular, sharply 

 defined and somewhat elevated, chitinized area. Penultimate cerarii 

 with six to ten spines and scattered pores, but no slender setae, all sur- 

 rounded by an indefinite chitinized area. Remaining cerarii with two to 

 four spines and three to four pores, but no auxiliary setae. Dorsal body 

 setae few, small and slender. Tubular ducts for the most part without a 

 raised rim about the mouth. Anal ring simple, borne upon the dorsum 

 at some distance from the margin. Anal ring setae scarcely as long as 

 the diameter of the ring and about a third as long as the anal lobe setae. 



First stage larva with six-segmented antennae ; with but one pair of 

 cerarii, these on the anal lobes and containing but two spines. 



Notes : In my key to the California species of this genus this will run to 

 P. craivii, a species which it very much resembles. However, the character and 

 position of the anal ring are sufficient to distinguish it at once, the ring of crawii 

 being in all respects of normal character. 



