HYMENOPTERA SAW-FLIES, ETC. 



193 



RhODITES EGLANTERIiE, Htg. 



The galls are found on leaves of dog-rose {Rosa canina), generally 

 on under side of leaves, but also on upper surface and sometimes on 

 leaf-stalks. They are very 

 pretty spherical galls, about 

 3 - 5 mm. diameter, with 

 beautiful blending in colour 

 of yellow, green, and red, 

 having a small attachment 

 to leaf, and with a large 

 inner cell. 



They may be looked for 

 from July to September, 

 but may be very easily over- 

 looked. The galls, when 

 fully developed, fall to the ground. The larva pupates within the gall. 

 Fig. 188 is a representation of the galls on the under side of the leaf. 



Fig. \%~.— Hornet (Vcspa Crabro). 



Fig. 188.— ftv/^s on under side of Imf of dnij-roae 

 (Rosa canina) caused by Rliodites eglanterite. 



Fig. 189.— " J1/0.SS orpin-cushion gaU, 

 ca used by Rliodites roste. 



RnODITES ROS^, Htg. 



This insect, through its oviposition, causes the familiar growths on 

 dog-rose (Rosa canina) known as "Robin's pin-cushion," "Moss galls," 

 "Bedeguar galls," &c. This gall (fig. 189) is common in every lane, 



N 



