The Turnip Aphis. 

 (Aphis brassicaej 



a Wingless viviparous female,, covered with a mwly coat.. 



b. Vfyigl&ss \iviparcuff f&njale, not. siz& & magnified/. 



c. Winged viviparous fernaLe. se<esi- in profile. 



