SUBFAMILY ERIOCOCCINAE 143 



c. Head cerari and all other cerari of body never with more than 

 two ceraran setae. 



d. Body with eighteen pairs of cerari; auxiliary setae want- 

 ing; tricerores few and scattered; anal lobes sometimes with 

 single seta, sometimes with two or three small setae in addi- 

 tion to ceraran setae; dorsal setae small, sharply pointed; 

 anal setae about one and one-half times as long as the anal 

 ring setae; antennae consisting of eight segments. — Cali- 

 fornia, Utah on roots of Hemizoonia, potato, tomato, wild 

 radish, Malva, pansies, wild sunflower, aster, nightshades, 

 purslane. solani Ferris. 



dd. Body with fifteen or sixteen pairs of cerari; cerari with 

 small but distinct clusters of tricerores and without auxil- 

 iary setae; ceraran setae large, subequal in size, stout, coni- 

 cal, with distal portion slightly flaggellate; antennae consist- 

 ing of six to eight segments; anal ring setae about twice 

 as long as diameter of anal ring and much longer than anal 



setae. — Pseudococcus lycii Ferris. — Arizona on Lycium. 



lycii Ferris. 



cc. Head cerari, at least one pair, with three to four ceraran setae. 

 d. Anal setae slightly shorter than anal ring setae; cephalic 

 three or four pairs of cerari with three or four ceraran 

 setae, other cerari with two, all cerari obscure and without 

 auxiliary setae; dorsal setae minute and few in number; 

 tubular ducts few, without raised rim. — California on 



Artemisia. artemisiae Ehrh. 



dd. Anal setae about one and one-half times as long as anal ring 

 setae; ocular cerari with three to four ceraran setae, other 

 cerari with two, all without auxiliary setae; anal lobes large 

 and prominent; dorsal setae few and extremely small; tubu- 

 lar ducts with their mouths borne at apical end of conical 

 projections, projections surrounded by one to four small 

 setae; tubular ducts arranged two to three near each cerar- 

 us, irregular double row near the meson, and indefinite 

 number on head. — Phenacoccus osborni Sanders. — Phenacoc- 

 cus pettiti Hollinger. — California, Ohio, Missouri on Stachys, 

 Monardella, Diplacus, Solanum, Toxicodendron, Catalpa, 



Sycamore. stachyos Ehrh. 



bb. Anal cerari always with more than two ceraran setae. 



c. Anal cerari with three or four ceraran setae, also cephalic 

 three or four pairs of cerari, all other cerari with two ceraran 

 setae; cerari without auxiliary setae; body setae few, scat- 

 tered, and small; anal setae nearly twice as long as anal ring 

 setae. — California on Rubus, Fragaria, Symphoricarpus, Cas- 



tilleia, Eriophyllum, Geranium. colemani Ehrh. 



cc. Anal cerari always with more than four ceraran setae. 



d. Anal setae nearly twice as long as anal ring setae; anal 

 cerari with six to ten ceraran setae, second pair from caudal 

 end with six to ten, third with two and several other setae 



