Tig. 293. Aphis 



Fig. 294. Aphis 



Fig. 295. Aphis 



Fig. 296. Aphis 



Fig. 297. Aphis 



Fig. 298. Aphis 



Fig. 299. Aphis 



Fig. 300. Aphis 

 antennal segments. 



Fig. 301. Aphis 



Fig. 302. Aphis 



Fig. 303. Aphis 



Fig. 304. Aphis 



Fig. 305. Aphis 



PLATE 16 



marutae Oest., head. 



marutae Oest., third and fourth antennal segments. 



marutae Oest., fifth and sixth antennal segments. 



marutae Oest., antenna, aptera. 



marutae Oest., end of abdomen, aptera. 



marutae Oest., cauda, alate. 



marutae Oest., cornicle, alate. 



neomexicana Ckll., var. paoifica Dvdn., third and fourth 



neomexicana Ckll. var. pacifica Dvdn., cornicle. 



neomexicana Ckll. var. pacifica Dvdn., cauda. 



yuccae Cowen, fourth, fifth, and sixth antennal segments. 



yuccae Cowen, third antennal segment. 



yuccae Cowen, tip of abdomen. 



