SYSTEMATIC TREATMENT 61 



Type host and locality. From roots of Hemizonia rudis (tarweed) 

 on the campus of Stanford University. 



Hosts and distribution. I have this from potato, tomato and wild 

 radish in the vicinity of Stanford University, potato and Malva sp. from 

 near San Jose and immature specimens that I believe to be this species, 

 from roots of pansies at Salt Lake (R. W. Doane, coll.). Specimens are 

 in Mr. Essig's collection from Malva rotundifolia and Malva parviftora, 

 in Ventura County. Recorded by Essig from these hosts and from 

 potato, tomato, wild sunflower, Aster, nightshade and purslane from 

 southern California and from potatoes at Stockton. 



Notes : In spite of the 8-segmented antennae this is certainly a Phenacoccus, 

 although the generic characters are indeed obscure. The determination of this as 

 Pseudococcus solani Ckll., which was described from New Mexico, seems to have 

 been made upon the basis of the fact that both have been found upon potatoes. 

 It is entirely possible that this determination is correct, but it is equally possible 

 that it is not, and I am describing the species as new, keeping the name solani in 

 order that no change will be necessary if this determination is confirmed. 



In life this might, perhaps, be confused with Pseudococcus eriogoni (Ehrh.) 

 which it greatly resembles both in appearance and habitat. In preparations it much 

 more nearly resembles Pseudococcus than Phenacoccus, but the presence of 18 pairs 

 of cerarii and of a denticle on the claws will place it in the latter group. 



Phenacoccus simplex King. 

 1902. Phenacoccus simplex King, Ent. News. 13:42-3. 



In life. Oval in shape, 3 mm. long, 2 broad, of a reddish-brown 

 color. Body thinly covered with white secretion" (King). 



Morphological characteristics. The only information of any value 

 conveyed by the original description is as follows: "Boiled in KOH, 

 cleared and mounted in balsam, practically colorless except around the 

 area of the grouped spines, which is tinged with yellowish-brown. These 

 groups are variable in size and the spines are conical in shape, short, stout 

 and placed close together. The dorsum is quite thickly besel with short 

 conical spines and thin, not at all long, hairs. These not uniform in 

 length." 



Type host and locality. Lone Pine, California. On Atriple.v. 



Notes : I have not seen this species. The description conveys a faint hint 

 that this may be a Puto, but beyond this little can be said. 



Genus PUTO Signoret 



1875. Puto Signoret, Ann. Soc. Ent. Fr., (5), 5:394. 

 1897. Ceroputo Sulc, Sitz. k. Bohm. Ges. Wiss., no. 61. 



Pseudococcine forms with a tooth on the face of the tarsal claws 

 and with all the cerarii (from 16 to 18 pairs) surrounded by a definite 



