36 Farmers’ Bulletin 1128. 
GRAPE APHIDS ATTACKING THE FOLIAGE. 
The well-known grape phylloxera' occurs in some localities upon 
grape foliage (fig. 27), but this species is not treated in this bulletin, 
since it is injurious principally to the roots and requires control 
Fiqg. 27.—Galls of grape phylloxera on grape leaf, 
measures radically different from those employed against foliage- 
inhabiting species. 
THE GRAPEVINE APHIS.? 
The grapevine aphis is very numerous in some localities, infesting 
the tender shoots and leaves (fig. 28) and sometimes the fruit clusters, 
1 Phylloxera vitifoliae (Fitch). 2 A phis illinoisensis Shimer. 
