PLATE XVII. 



Phylloxera spinuloida l^ergande, n. sp. 



Fig. 128. Mature gall - reduced )A,. 



Fig. 129. Migratory female -magniiied 40 diameters. 



Fig. 130. Antenna of migratory female — magnified 250 diameters. 



Phylloxera devastatrix Pfergande, n. sp. 



Fig. 131. Young galls in various stages, showing deformation of flowers- 

 reduced Vi. 

 Fig. 132. Young galls, different stages— reduced Yi. 

 Fig. 133. Mature galls— reduced ]A,. 

 Fig. 134. Old galls— reduced Yi. 

 Fig. 135. Antenna of migratory female— magnified 250 diameters. 



