276 



OAK GALLS AND GALL INSECTS 



Fig. 4 A. Ovipostor of a Gall-insect Diyoplnvita (x 30). 

 B. Egg of a Gall-insect. 



a. Apical 



b Basal t ''•''^chment of support 



c. Triangular plate 



d. Anterior plate 



e. Posterior plate. 



f. Spiculae 



g. Anal papillae 

 /; . Sheath 



k. Egg stalk 



w. Egg body. 



