190 



THE APPLE LEAF HOPPER 



c^.4-. 



Fig. 98. Organs of the eighth and ninth segments, a, Phylloxera depressa, which 

 hiis an elongjited iUh segment but lacks a ciiuda. b. Conical Cauda of A. brassicae. c, 

 Knslform Cauda of MiuTosipliumi. d. Obsolete cauda of P. populicauUs. e, Globular 

 Ciiuda of Oal. bellus. f, Bitid anal plate of Cal. ulmifolii. g, Knsiform cauda seen 

 from the dorsal .side, showing the arrangements of the hairs, h, Genital armature 

 of Macrosiopnm. 1, anal opening; 2, genital opening; 3, cauda; 4, anal plate; 5, 

 genital plate; •',. genital armature; 7, tubercle on the cauda; 8, unplgmented area at 

 the base of the cauda. 



