76 THE CALIFORNIA SPECIES OF MEALY BUGS 



pores and no auxiliary setae. Area about the cerarii more or less defi- 

 nitely chitinized. Dorsum of the abdomen and the posterior portion of 

 the thorax with numerous spines of the same type as those in the cerarii. 

 Toward the head these give way to short, slender setae. Derm, espe- 

 cially on the abdomen, with innumerable tubular ducts without a raised 

 rim about their mouths. Legs quite short and stout, the posterior coxae 

 with many ventral pores. Body form more or less globular. 



Immature specimens resembling the adult except for a reduction in 

 the number of spines in the cerarii. Male larva of the same type as in 

 Pseudococcus. 



Type host and locality. From Artemisia frigida, Fort Collins, Col- 

 orado. 



Hosts and distribution. In California this species has been recorded 

 from the vicinity of Stanford University and from the southern part of 

 the state, the only recorded host being Artemisia calif ornica. 



Authentication. I have examined the types of this in the National 

 Collection at Washington. 



Notes: I am entirely in accord with Sasscer's conclusion that Eriococcus 

 artemisiae Kuwana is identical with Erium lichtensioides. The types of the former 

 species are in the Stanford collection. I have not seen the types of Eriococcus 

 artemisiae var. catalinae Ehrhorn, but I can see no grounds for recognizing this 

 variety. The types of Pseudococcus artemisiae Essig are unmistakably E. lichten- 

 sioides, but the figure accompanying the original description appears to be of an- 

 other species occurring on Artemisia. I have this species, but do not possess 

 enough material to justify naming it. The published record of the occurrence of 

 Pseudococcus hymenocleae on Artemisia in California is probably based on a mis- 

 identification, as this species very much resembles E. lichtensioides. 



Genus ANTONINA Signoret. 



Pseudococcine forms without legs in the adult female; with the 

 antennae in adult female reduced to mere stubs; without recognizable 

 cerarii ; with the posterior end of the body more or less invaginated, this 

 invagination forming a tube at the inner end of which is the anal ring. 

 Spiracles very large and conspicuous. Circular, multilocular pores pres- 

 ent on the dorsum. 



Type of the genus Antonina purpurea Sign. 



Notes: Although the species of this genus depart widely in form and ap- 

 pearance from the general type of the group, there is, I believe, no doubt that its 

 affinities are with the Pseudococcine forms. The cerarii are not recognizable, but 

 the tubular ducts are of the same type as in Pseudococcus and there are two pairs 

 of dorsal ostioles, although it is sometimes difficult to distinguish the anterior pair. 



But one species of this genus has been recorded from California, although 

 there are in all probability other species on our native grasses. 



