168 THE COCCIDAE 



six segments; anal ring of adult female with eight and 



of first nymphal stage of six anal ring setae 



Exaeretopus Newst. 



ee. Mesothoracic and metathoracic legs subequal in length 

 with prothoracic legs; tarsi of all legs consisting of single 

 segment. 



f. Body of adult female greatly elongated, much longer 

 than broad. 



g. Body of adult female elongate with parallel sides; 

 legs normal in form, slender and well developed; 



anal ring with six anal ring setate 



Luzulaspis Ckll. 



gg. Body of adult female twice as long as wide; legs nor- 

 mal; antennae consisting of seven or eight segments; 

 antennae of first nymphal stage consisting of six seg- 

 ments. Spermococcus Giard. 



ff. Body of adult female oval or suboval in outline, not 

 greatly elongated. 



g. Body of adult female margined with distinctly thick- 

 ened marginal setae. 



h. Spinae pointed, stout, subequal in length or small- 

 er than marginal setae; body of adult female ex- 

 cept a small cephalic portion, completely enclosed 

 in felted white ovisac; anal ring of adult female 



with eight anal ring setae Lichtensia Sign. 



hh. Spinae much larger than marginal setae; body 

 of adult female completely enclosed in compact 

 striated ovisac; anal ring of adult female with 



eight anal ring setae Stotzia Marchal. 



gg. Body of adult female margined with short, fine 

 pointed setae; body of adult female covered by ovisac 

 of curled threads of wax divided into four trapezoi- 

 dal areas, which in egg laying female completely 

 covers dorsal aspect; anal ring of first nymphal stage 



with eight anal ring setae Euphillipia Berl. & Silv. 



dd. Antennae of adult female with less than eight segments. 

 e. Antennae of adult female consisting of seven segments. 

 f. Body of adult female not enclosed in spherical felted 

 ovisac with elongated dorsal opening. 

 g. Body of adult female oval or elliptical, with loosely 

 felted excretion of wax, especially in second nymphal 

 stage, but absent or inconspicuous in adult female; 

 tarsi longer than tibiae; body with marginal fringe. 



Eriochitin Mask. 



gg. Body of female elliptical and convex, with closely 

 felted ovisac; cuticle with many large circular 

 cerores; anal ring with six anal ring setae; margin 

 with prominent marginal setae Mallococcus Mask. 



