OF PSEUDOCOCCIDAE & ERIOCOCCIDAE 



137 



the ratio 1 : 1-1-1-3 (113). Scape 46-52 (49)|x long and 40-43 (42)0. wide at base ; with 

 6-9 (73) h.s. Pedicel 58-64 (6i)u. long and 34-37 (35)(x wide ; with 17-22 (200) f.s., 10-14 

 (12-0) h.s. and a sensilhim placodeum. Flagellutn : Segment III club-shaped, longest of all 

 and about 24^ wide ; the ratio lengths of third and terminal segments being 1-3-1-6 (1-4) : 1, 

 and the ratio width to length of segment III 1 : 3-3-4-3 (3-7)- Segments IV-X cylindrical 

 and approximately 2 2|j. wide ; the ratio width to length of segment IX 1 : 2-0-2-3 (2-1). 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 u. 



70-92 



52-55 



52-58 



52-58 



52-58 



49-58 



49-55 



55-58 



(av.) 



(79) 



(54) 



(55) 



(56) 



(56) 



(54) 



(53) 



(57) 



f.s. 



11-14 



15-19 



12-16 



12-15 



10-16 



6-12 



8-10 



6-8 



(av.) 



(12-3) 



(17-0) 



(14-0) 



(13-5) 



(12-5) 



(io-3) 



(8-8) 



(7-0) 



h.s. 



4-7 



3-4 



2-4 



3-4 



5-7 



6-7 



7-9 



7-8 



(av.) 



(5-3) 



(3-3) 



(3-o) 



(3-5) 



(55) 



(6-8) 



(8-o) 



(7-3) 



Antennal bristles easily distinguishable ; segments VIII and IX each with a ventral bristle. 

 Terminal segment with 3 preapical bristles, a pair of capitate subapical sensory setae and one 

 apical hair-like seta. 



Thorax : 494-608 (547) y. long. Prothorax : Pronotal ridge medially interrupted as usual. 

 Lateral pronotal sclerites and post-tergites large. Dorsal margin of proe pi sternum ridge-like. 

 Prosternum triangular, 31-40 (34) [z long ; posteriorly bounded by the transverse, 92-101 

 (98) [i long prosternal ridge. Prothoracic setae on each side : Medial pronotal setae 2-4 (33) f.s. 

 and 1-3 (27) h.s. ; lateral pronotal setae 0-1 (09) h.s. ; post-lergital setae 10-13 ( IX "5) IS - anc > 

 1-2 (1-7) h.s. ; antespiracular dorsal setae 0-2 (1-3) h.s. 

 h.s. Prosternal setae 3-5 (43) f.s. and 1-2 (13) h.s. 

 Medial pronotal pores 2-4 (2-5) ; lateral pronotal pores 4-5 (4-3) 

 1-3 (2-0). Prosternal pores 2-4 (3-3). 



Mesothorax : Prescutum 67-82 (73)^ long and 122-137 ( I2 8)(i wide, i.e. the ratio 1 : i-6- 

 1-9 (17) ; prescutal ridge strong and prescutal suture distinct. Scutum heavily sclerotized 

 antero-laterally, and with a longitudinal median narrow membranous area. Scutum 1 10-128 

 (ng)n long, the ratio lengths of prescutum to scutum being 1 : 1-5-1-8 (i-6). Prealare, prealar 

 ridge and triangular plate well developed. Sculellum 52-58 (55) (x long and 101-116 (ioj)\l 

 wide, the ratio being 1 : 1 -9-2-0 (194), and the ratio its length to the length of scutum 1 : 2— 1 



Antespiracular ventral setae 1-2 (1-3) 

 Prothoracic disc pores on each side : 

 antespiracular dorsal pores 



200^ 



Fig. 24. Pseudococcus citriculus Green, lateral view. 



