THE COCCIDAE OF SOUTHWESTERN UNITED STATES 



35 



distance from the margin, very small and without setae ; anal plate like- 

 wise small, without setae. Margin of the body destitute of spines except 

 along the cephalic region and the chitinized portion of the abdomen. 



Fig. IS.Aclerda ariditatis n. sp. : A, first stage larva; B, posterior portion of 

 abdomen of adult, left half dorsal, right half ventral; C, marginal spine; 

 D, second (?) stage, dorsal aspect of posterior portion of abdomen; E, first 

 stage, posterior portion of abdomen, left half dorsal, right half ventral; F, 

 anal plate and tip of abdomen of adult, left half dorsal, right half ventral ; G, 

 tubular duct; H, marginal and submarginal spines and pores of adult. 



