134 THE COCCIDAE 



SPECIES OF PSEUDOCOCCUS 



a. Anal cerari with ten or more ceraran setae. 



b. Body with seventeen pairs of cerari, anal cerari with fifteen to 

 twenty ceraran setae, other cerari with three to six ceraran setae; 

 anal ring with single dentaceroris on each side; cisanal setae 

 adjacent to anal ring, distance between them subequal to distance 

 between obanal setae. California on Ramona, Artemisia, Quercus, 



Pasania, Adenostoma. era-urn Coq. 



bb. Body with not more than eleven pairs of cerari, anal cerari with 

 fifteen to twenty ceraran setae, first pair of cerari cephalad of anal 

 cerari with six to ten ceraran setae, other cerari with two to four 



ceraran setae. California on Ephedra. ephedrae Coq. 



aa. Anal cerari never with more than two ceraran setae. 



b. Cerari other than anal cerari never with more than two ceraran 

 setae. 



c. Body always with eighteen pairs of cerari; ceraran setae us- 

 ually two in number, rarely with one or two of cephalic cerari 

 with three or four ceraran setae. Eastern United States on 



Coleus, ferns, various greenhouse plants. destructor Comst. 



cc. Body always with less than eighteen cerari. 



d. Body always with at least seventeen pairs of cerari. 



e. Anal cerari never placed on well defined chitinized area, 

 f. Ceraran setae of usual conical form, never with distal 

 portion of shaft or with distal portion of shaft of dorsal 

 setae flagelliform; cerari without auxiliary setae, 

 ceraran setae large; dorsal setae small and scattered; 

 anal ring setae shorter than anal setae; anal ring with 

 two dentacerores on each side; the cisanal setae dis- 

 tinctly closer together than obanal setae. Europe, 

 United States, Jamaica, Brazil, Hawaiian Islands, Mauri- 

 tius on orange, lemon, coffee, tobacco, ivy, peony, coleus, 



and many other plants. citri Risso. 



ff. Ceraran seate with distal portion of shaft flagelliform; 

 dorsal setae numerous, elongate, with dorsal portion 

 more or less flagelliform; cerari without auxiliary 

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

 as anal ring setae. Japan, California, New Jersey on 



Krauhnia. krauhniae Kwn, 



ee. Anal cerari always placed on well chitinized area; ceraran 

 setae not with distal portion flagelliform; dorsal setae 

 numerous, long; anal cerari and adjacent one or two pairs 

 of lateral cerari with auxiliary setae, other cerari without; 

 anal setae and anal ring setae subequal. California on 



Distichlis. timberlakei Ckll. 



dd. Body always with less than seventeen pairs of cerari. 



e. Body with twelve to fifteen pairs of cerari; ceraran setae 

 short and stout, those of lateral cerari distant, more dis- 

 tant than those of anal cerari; auxiliary setae wanting, 



