OF PSEUDOCOCCIDAE & ERIOCOCCIDAE 



145 



times short or reaching the level of the dorsal eyes. Lateral arms forming together with the 

 ventral arm a Y-shaped ridge. Postoccipital ridge V-shaped and medially interrupted at a 

 weak point ; the ridge not reaching the preocular ridges anteriorly. Dorsomedial part of 

 epicranium slightly raised. Preocular and interocular ridges well developed ; ventral rudiment 

 of the former absent. The dorsal part of the postocular ridge reduced to an atrophied arm. 

 Preoral ridge slender. Eyes : Dorsal simple eyes not projecting beyond the outer margins of 

 the head in dorsal view ; their corneae 15-21 (i8)(j. in diameter and separated by 104-116 

 (iio)fi, i.e. 5-0-7-6 (60) times their diameter apart. Ventral simple eyes 18-21 (20)^ in 

 diameter and 21-31 (24)^ apart. Lateral ocelli well developed. Cranial apophysis apically 

 truncate. Tentorial bridge slender. Dorsal head setae 10-14 ( IX °6) on each side in front of 

 the postoccipital ridge ; each gena always with 3 genal setae. Ventral head setae on each side : 

 2-3 (2-4) between the ventral eyes ; 8-1 1 (9-3) just anterior to the ventral eyes, forming on both 

 sides a transverse band. Head pores : 4-7 (5-1) dorsal head pores present near the base of 

 each antenna ; ventral pores absent. 



Antennae : Filiform ; normally 10-segmented but fusion between two adjacent segments 

 of the flagellum seems to be common ; 412-482 (455) (x long, i.e. shorter than half the length 

 of the body, the ratio being 1 : 2-7-3-1 (2-9), and shorter than the hind leg, the ratio 1 : 1-1-1-3 

 (1-2). Scape 34-37 (36)11 long and 40-43 (4i)(x wide at base ; with 5-7 (6-2) h.s. Pedicel 

 46-49 (48) (x long and 31-34 (33) (x wide ; with 8-16 (12-2) f.s., 6-10 (8-4) h.s. and a sensillitm 

 placodeum. Flagellar segments : Segment III club-shaped, subequal in length to segment X, 

 the ratio their lengths being o-8-i-i (09) : 1. The flagellar segments about 2ijx wide, i.e. the 

 ratio width to length of segments III and IX 1 : 2-3-2-9 (2-6) and 1 : 1-9-2-3 (2-1), respectively. 

 The following table shows the lengths of the flagellar segments and the number of setae on 

 each : 



III 



IV 



V 



VI 



VII 



VIII 



IX 



X 



length in |x 



49-61 



31-40 



34-40 



37-46 



43-49 



43-55 



43-49 



55-6i 



(av.) 



(55) 



(36) 



(38) 



(43) 



(47) 



(49) 



(48) 



(58) 



f.s. 



5-9 



5-10 



5-10 



6-13 



9-17 



8-16 



8-13 



10-15 



(av.) 



(7-2) 



(7-4) 



(7-6) 



(io- 4 ) 



(13-4) 



(13-2) 



(n-6) 



(12-6) 



h.s. 



i-3 



1-2 



1-2 



2-3 



3-5 



2-5 



2-4 



4-6 



(av.) 



(i-8) 



(1-6) 



(1-2) 



(2-2) 



(4-o) 



(3-8) 



(3-4) 



(4-8) 



200-^ 



Fig. 28. Saccharicoccus sacchari (Cockerell), macropterous form, lateral view. 



