OF PSEUDOCOCCIDAE & ERIOCOCCIDAE 



It should be noted that both conditions may obtain in certain families. At the 

 bottom of the table are given the total number of occasions on which the specialized, 

 primitive, and both conditions occur in each group. The proportion of the number 

 of primitive to specialized conditions of the characters can be taken as indication to 

 the primitive or specialized nature of the group, e.g. the primitive Margarodidae 

 have no specializations, 12 primitive characters and one in which both conditions 

 occur, and the specialized Diaspididae show 8 specializations and 5 primitive 

 conditions. Table VIA, prepared in the form of two half matrices, in which are 

 given the total number of characters shared by each pair of groups (upper triangle 

 of the matrix), and separating each pair (lower triangle). In this table the charac- 

 ters which occur in both conditions in either member of a pair are omitted, e.g. 

 between Margarodidae and Steingelia, the character 7 in table VI (membranous area 

 of scutum) which may be present or absent in Margarodidae, was not taken into 

 consideration, and therefore only 12 characters are left for comparison. 



Table VIA 



The number of characters shared by, and separating each pair of families: 









V 

















Cfl 

















~z 



4> 

















(8 









Sharing 



•0 





B 

 



u 



(J 





 § 





01 





•5 

 

 c 



V 











u 







6 



- 

 to 



•5 



Separating 



u 



M 



C 



S3 



c 



•a 



3 

 ■- 







!2 

 u 







5 







s 



X 



P- 



P- 



W 



'-^ 



P 



Margarodidae 





9 



8 



i> 



7 



5 



5 



Steingelia 



3 





7 



5 



8 



9 



6 



Phenacoleachiidae 



2 



4 





9 



9 



4 



5 



Pseudococcidae 



3 



5 



1 





9 



3 



3 



Eriococcidae 



5 



5 



2 



1 





5 



7 



Coccidae 



5 



2 



6 



7 



6 





7 



Diaspididae 



7 



7 



6 



7 



6 



4 





It appears from these tables that the Eriococcidae are more specialized than the 

 Pseudococcidae. They have 6 specializations (Table VI) and share a total number 

 of 7 characters with the decisively more specialized Diaspididae (Table VIA), while 

 the Pseudococcidae have only 4 specialized conditions and share only 3 characters 

 with Diaspididae. It is also interesting to note that the structure of the genital 

 segment suggests a closer relationship between Eriococcidae and Diaspididae than 

 between the latter and Pseudococcidae. 



