THE COCCIDAE OF SOUTHWESTERN UNITED STATES 



63 



the mouth. The arrangement of these ducts may best be gathered 

 from the figure. Anal opening slightly nearer the anterior margin than 

 the posterior. Circumgenital pores in five groups, the number of pores 

 in each group very small (two to eight). 



Notes: I am informed by Mr. Sasscer that this species stands in the Na- 

 tional Collection as L. concolor Ckll., and it is apparently upon this determination 

 that Essig's record of the occurrence of concolor on Ceanothus is based. Although 

 the two species are certainly closely related they are obviously distinct, as a ref- 

 erence to the figures will at once show. 



Genus ASPIDIOTUS Bouche. 



Aspidiotus candidulus Ckll. 



Fig. 35. 



Type host and locality. From Prosopis velutina, Tucson, Ariz. 



Material examined. From type host and locality. 



Scale. Scale of the female flat, circular, rather thin, slightly yellow- 

 ish; exuviae subcentral. Scale of the male somewhat oval, with the exu- 

 vium near one end. 



Fig. 35. Aspidiotus candidulus Ckll. : pygidium. 



