PLATE XVIII. 



Phylloxera permciosa Pergande, n. sp. 



Fig. 136. Mature galls, on blossoms— reduced K- 

 Fig. 137. Young stem-mother, after hatching — magnified 300 times. 

 Fig. 138. Antenna of young stem-mother — magnified about 500 times. 

 Fig. 139. Tibia and tarsus of same — highly magnified. 

 Figs. 140-141. Antenna of migratory female, showing range of variation 

 — magpified 250 diameters. 



Phylloxera c -ren Riley. 



Fig. 142. Mature' galls— reduced Y^,. 



Phylloxera castanece Haldeman. 



Fig. 143. Apterous female — magnified 40 diameters. 



Fig. 144. Antenna of apterous female — magnified 250 diameters. 



Fig. 145. Pupa, with short tubercles — magnified 40 diameters. 



Fig. 146. Antenna of same— magnified 250 diameters. 



Fig. 147. Pupa, with long tubercles —magnified 40 diameters. 



Fig. 148. Antenna of same — magnified 250 diameters. 



Fig. 149. Migratory female — magnified 40 diameters. 



Fig. 150. Antenna of migratory female — magnified 250 diameters. 



