SUBFAMILY LECANUNAE 173 



. Adult female with legs and antennae always present and antennae 

 segmented. 



c. Abdomen of adult female conspicuously transversely furrowed, 

 appearing as if distinctly segmented, as seen in unmounted 

 specimens from dorsal aspect; antennae of adult female short 

 and thick, with six segments; legs rudimentary, segments short 

 and swollen. Alecanopsis Ckll. 



cc. Abdomen of adult female never with prominent transverse fur- 

 rows so as to appear as if segmented. 



d. Adult female with margin of the body fringed with marginal 

 setae, never with scales. 



e. Body of adult female always alveolate, never with tesserae. 



f. Abdomen of adult female always with distinct anal 

 cleft with opercula near margin of the body. 



g. Cuticle of dorsal aspect with minute microscopic pits 

 or alveolae, distance between alveolae always several 

 times diameter of alveolae. 



h. Adult female with alveolae never symmetrically 



arranged, bounding tesserae-like areas. 



i. Body of adult female flat or slightly convex; 



antennae consisting of seven or eight segments; 



median spina about twice as long as lateral 



spinae; opercula usually longer than broad; 



anal ring with eight anal ring setae 



Lecanium Burm. 



ii. Body of adult female distinctly convex, oper- 

 cula usually broader than long, 

 j. Adult female with antennae consisting of 

 seven segments; median spina usually less 

 than twice as long as lateral spinae; anal 



ring with eight anal ring setae 



Eulecanium Ckll. 



jj. Adult female with antennae consisting of 

 seven or six segments; median spina usually 



three times as long as lateral spinae 



Mesolecanlum Ckll. 



hh. Adult female with alveolae symmetrically ar- 

 ranged and bounding tesserae-like areas; antennae 

 consisting of seven or eight segments; anal ring 



with six anal ring setae Stictolecanium Ckll. 



gg. Cuticle of dorsal aspect with large often nearly 

 adjacent alveolae, the distance between alveolae not 

 several times diameter of alveolae, 

 h. Body of adult female slightly convex or hemis- 

 pherical, lateral portions never vertical; antennae 

 of adult female consisting of eight segments; anal 

 ring with eight anal ring setae Saissetia Depl. 



