OF THE FAMILY COCCIDAE 



93 



(average 1450) \jl ; width at mesothorax 280-330 (average 309) [t. Wing expanse 2200-2650 

 (average 2446) u.. 



Head subcorneal in dorsal view ; in lateral view obliquely elongated, with anterodorsal bulge 

 pronounced ; length from apex to pronotal ridge 198-239 (average 216) |i., width across genae 

 186-205 (average 196) iz. Median crest sclerotized and distinctly polygonally reticulated ; 

 with numerous fleshy dorsal head setae and 5-9 (average 6-8) hair-like ones. Midcranial ridge 

 dorsally absent ; ventrally narrow but well defined, reaching ocular sclerite posteriorly, 

 surrounding area showing distinct polygonal reticulation. Genae large, sclerotized, with poly- 

 gonal reticulation ; each with 19-29 (average 23) fleshy and 3—7 (average 49) hair-like genal 

 setae. Eyes : two pairs, subequal ; corneae of dorsal eyes 21-32 (average 27) u. in diameter 

 and 10-21 (average 13) times as much apart ; those of the ventral eyes 22-32 (average 29) tx 

 in diameter and o-6-i-6 (average 0-9) times as much apart. Ocellus small. Ocular sclerite 

 well sclerotized dorsally and laterally, but weak ventrally except for an area around the eyes ; 

 polygonally reticulated throughout Preocular ridge extending only a short distance below 

 articular process. Postocular ridge well developed throughout ; dorsal and ventral to ocellus 

 the ridge usually splits up, with the anterior branch partly surrounding ocellus Inter ocular 

 ridge absent, although the area between ocellus and preocular ridge is strongly sclerotized. 

 Dorsal ocular setae : 2-8 (average 4-<)) f.s. and o 4 (average 1 -6) h a mi i\i< h side. \'ctilral head 

 setae : 75-98 (average 83) f.s. and 3-4 (average 3-8) h.s., scattered over the ocular sclerite, 

 always with some (9-14, average 12) f.s occurring in front of this sclerite and with 8 16 (average 



Fig. 31. Coccus hesperidum L., dorsal and ventral view. 



