Aphids Injurious to Orchard Fruits, Etc. 31 
WSS WG S 
N\ 
—— 
Mh Mi Minin 
“tiny 
d 
Fig. 23.—Currant aphids: a, Wingless viviparous female of the currant aphis; b, distorted currant foliage 
due to attack of this species; c, spring migrant of the sow-thistle aphis; d, injury to currant by this species; 
e, work of the green gooseberry aphis on gooseberry; /, wingless viviparous female of the New Mexico 
gooseberry aphis; g, wingless viviparous female of Sanborn’s currant aphis. a, c,/,g, greatly enlarged 
