OF THK FAMILY COCCIDAE 101 



Dorsal ocular setae : 0-5 (average 2-5) f.s. and 0-2 (average 06) h.s. on each side. Ventral head 

 setae : 61-82 (average 71) f.s. and 4-6 (average 4-7) h.s., scattered over the ocular sclerite, 

 always with some (2-6, average 4) f.s. occurring in front of this sclerite and with 13-18 (average 

 14) f.s. between and behind the eyes. Preoral ridge present. Tendon-like apodeme long 

 Cranial apophysis long ; apex deeply bifurcate, extending to around the level of the anterior 

 margin of the ventral eyes. Mouth opening irregular. Anterior tentorial pits absent. 



Antennae 10-segmented, filiform ; 840-901 (average 871) u. long, i.e. shorter than half body 

 length (ratio 1 : 2-10-2-23, aversge 2 18), shorter than posterior leg (ratio 1 : 0-87-0-92, average 

 090) and longer than penial sheath (ratio 1 : 2-30-2-35, average 2-33). Scape 46-53 (average 

 47) u. long and 38-46 (average 43) \x wide, with 3 h.s. Pedicel : dorsal reticulation very weak 

 or absent ; 51-61 (average 56) u. long and 42-49 (average 45) [i wide ; with 7-1 1 (average 8-6) 

 f.s., 4-6 (average 5-1) h.s. and a sensillum placodeum. Segment III somewhat barrel-shaped, 

 1-9-2-4 (average 2-1) times longer than wide (57-65, average 60 \i long and 27-30, average 29 a. 

 wide), with 5-15 (average 9-3) f.s. of medium length, 1-3-1-5 (average 14) times longer than 

 width of segment ; with 2 or 3 usual sensilla basiconica. Segments IV-IX cylindrical ; lengths 

 of these segments (in \i) 106-182 (average 144), 110-131 (average 119), 106-129 (average 118), 

 87-103 (average 95), 76-91 (average 83) and 68-84 (average 76) respectively, widths varying 

 from 19 to 27 (jl, with distal segments slightly wider than proximal ones ; with -'3-44 (average 

 31), 25-30 (average 28), 22-32 (average 27), 20-30 (average 24), 15-20 (average 19) and 16-18 

 (average 18) f.s. respectively, but no h.s. ; antennal bristles on segments VIII— IX distinctly 

 larger than f.s. Segment X : terminal part not constricted ; 72-76 (average 74) u. long and 

 25-29 (average 26) [i wide ; caryring 6-1 1 (average 8-3) f.s., 3 capitate subapical setae and 5 

 antennal bristles of which the 3 long ones are almost as long as the segment and the 2 shorter 



Fig. 35. Pulvinaria Pbetulae (L.), dorsal and ventral view. 



