OF PSEUDOCOCCIDAE & ERIOCOCCIDAE 23 



The femur (fern) is relatively long and stout, broadest near the distal end, where 

 a ridge with two processes is well developed. 



The tibia (tib) is usually the longest segment of the leg, but in few species (P. 

 irenens and 5. sacchari) the tibia of the fore leg is somewhat shorter than the femur ; 

 at its base, the tibia carries a ridge with two processes which articulate with the 

 corresponding processes of the femur. The distal end of the tibia carries a pair 

 of setae modified into strong spurs, and a varying number of smaller spines. 



The tarsus (tar) is elongate, broad at the basal half and tapered slightly distally ; 

 composed of two tarsomeres, the first of which is very short, and the second much 

 longer. A campaniform sensillum (cam.s) always present on the dorsal surface, 

 at the base of the second tarsomere. Two long and apically-knobbed tarsal 

 digitules (tdgt) are usually present near the apex of the tarsus ; these digitules are 

 absent in both Ceroputo and Nairobia groups. 



The claw (cl) is slightly curved, uniformly tapering to a sharply pointed tip, and 

 dorsally articulates with the tarsus ; the ungual digitules (udgt), one on each side 

 of the claw, are fine, with acute tips. 



The ratios of several measurements of the legs were found to be taxonomically 

 useful and the following are here employed : the length of the hind leg to the total 

 body length ; the width of the hind femur to its length ; and the length of the 

 femur to the length of the tibia in the front leg. 



Abdomen 



The abdomen consists of the largely membranous pregenital segments and the 

 sclerotized genital segment. The segmental boundaries are rather obscure, but 

 the segmentation could be readily determined by the segmental arrangement of the 

 setae and derm pores. 



Pregenital segments 



Eight pregenital abdominal segments are recognized, and considered to represent 

 either I to VIII abdominal segments by some authors (Theron, 1958 ; Ghauri, 

 1962 and Giliomee, 1967), and also here adopted), or II to IX by the others 

 (Beardsley, i960) ; Beardsley explained that his interpretation was based on the 

 position of the posterior dorsal ostioles, equating their position with that established 

 by Ferris (1950) for the females ; Ferris regarded the first abdominal segment 

 (in the females) as completely absent, and that the posterior ostioles lie on what is 

 morphologically the 7th abdominal segment. In a subsequent paper, Beardsley 

 (1962) discussed Theron and Giliomee's views, and considered the abdominal 

 segmentation in Pseudococcidae as an unsettled matter. 



The first abdominal segment is developed dorsally and laterally only, and is 

 indiscernible ventrally ; this is indicated by a pair of small tergites, one on each 

 side of the median line ; similar, and even smaller tergites are usually also present 

 on segment II and sometimes III. No tergites occur on segments IV to VII, but 

 segment VIII carries a large, median tergal plate (at8). The ventral sclerotization 



