20 MORPHOLOGY AND TAXONOMY OF ADULT MALES 



capitate, subapical setae (set. scla) found in the Pseudococcidae (Sulc 1943 ; 

 Giliomee, 1961) and Diaspididae (Bustshik, 1958 ; Ghauri, 1962). Sulc called them 

 setae semi-claviformes. Both types probably have a sensory function. Specialized 

 sensilla are present on the 2nd, 3rd and 10th segments. 



The scape (scp) is short, wide and subrectangular in shape, with the basal part 

 sclerotized and the distal part mostly membranous. The dorsal margin is longer 

 than the ventral one. The scape articulates with the pedicel by means of a ventral 

 projection, which is situated opposite a corresponding projection on the basal ridge 

 of the pedicel. Posterolaterally it articulates with the preocular ridge by means of 

 a process on its basal ridge. The scape usually carries 3 hair-like setae and in 

 E. pela 2-4 (average 2-6) fleshy setae also occur on this segment. 



The pedicel (pdc) is short, broad and subglobular in shape. It is generally well 

 sclerotized with the distal part, especially dorsally, distinctly polygonally reticulated. 

 In P. myrtilli (Text-fig. 12, B), the reticulation is represented by a few wavy lines 

 and in P. Pbetulae (Text-fig. 35, B) and I. theobromae (Text-fig. 29, B) the reticulation 

 is usually entirely absent. The base of the pedicel is partly surrounded by a strong 

 basal ridge which is well developed ventrally, but weaker or absent dorsally. At the 

 dorsal end there is a shallow depression in which the constricted basal part of the 

 3rd segment is received. Both hair-like and fleshy setae are present ; they are 

 mostly located on the ventral and lateral surfaces. A small circular sensillum, 

 probably a sensillum placodeum, is situated dorsally or dorsolaterally. It is also 

 present in the Pseudococcidae (Giliomee, 1961) and Diaspididae (Ghauri, 1962). 



The flagellum (Fujux) is composed of the 3rd to 10th segments. The 3rd segment 

 (Text-figs., F) varies considerably in size and shape ; in Eriopeltis spp. (Text- 

 figs. 24, 26 ; F) it is long and club-shaped, while it is short and barrel-shaped 

 in P. Pbetulae (Text-fig. 35, F). This segment carries ventrally a number of small 

 sensilla (bs), which are probably sensilla basiconica. Their number varies indi- 

 vidually and may do so on the two antennae of the same specimen, but it rarely 

 exceeds a total of four. Sensilla were also found in the same area in the Pseudo- 

 coccidae (Giliomee, 1961) and Diaspididae (Ghauri, 1962). The 8th and 9th seg- 

 ment each has an antennal bristle, which is sometimes difficult to distinguish from 

 the fleshy setae ; the bristle is situated ventrally near the apex. 



In most species the 10th (terminal) segment is broadly rounded at its apex, but in 

 some (e.g. C. hesperidum ; Text-fig. 31, G) the distal part of the segment is tubularly 

 constricted. In addition to the fleshy and occasional hair-like setae this segment 

 also bears a number of antennal bristles (ab) and capitate subapical setae (set. scla). 

 The former consist of 3 long and 2 shorter setae. The subapical setae are usually 

 3 in number, but in /. theobromae there are only 2 and in Genus A there are 4-6 

 (average 5). On the ventral surface of the 10th segment 2 small sensilla (bs) are 

 found, one near the apex and the other somewhat more proximal. They are 

 probably sensilla basiconica and correspond to sensilla on this segment in the 

 Pseudococcidae (Giliomee, 1961) and Diaspididae (Ghauri, 1962). 



