Fig. ig. Aspidifltus perniciosiis Comst. Anal plate of female 

 showing normal structure of this lot of specimens. 



Fig. 20. Aspidiotits pcrniciosus. The upper figure is the left \ 

 side of anal plate and the lower figure is the right side of another 

 specimen transposed for comparison. 



Figs. 21, 22. Aspidiotiis pcrniciosus. One side of anal plate of 

 females showing variations. 



Fig. 23. Newly born nymph of A. peniiciosus Comst. Antenna 

 and cephalic leg enlarged on the right. 



