98 



THE ENTOMOLOGIST. 



Descriptions of Oak-galls. Translated from Dr. G. L. Mayr's 

 ' Die Milteleiiropaischen Eichengallen' by Mrs. Hubert 

 Herkomer nee Weise. 



Fig. 8. 



a. b. c. 



Deyophanta maceopteea. 



a. "With the gall-maker still peesent. 



ESCAPE OF THE GALL-MAKER. 



h. The gall after the 



. A SECTION. 



Dryophanta macroptera. — On the young twigs of the 

 Turkish oak, Quercus Cerris, this species produces swellings, 

 which vary considerably in size and form ; sometimes they 

 are small and of an elongate-oval form, and, like cocoons, 

 contain a larva, and in this case they produce merely a slight 

 incrassation of the twig. Sometimes the cells are densely 

 crowded, and arranged in a radiating fashion under the rind, 

 causing a manifest thickening of the twig. The perfect insect 

 emerges in October of the same year. — G. L. Mayr. 



Dryophanta macroptera has four inquilines ; one of them 

 occurs also in the two preceding galls. (1) Synergus flavipes. 

 Hart,: June; second year. (2) S. variabilis, M«?/r; May to July; 

 second year. (3) S. rotundiventris, Mayr : May ; second year. 

 (4) Ceroptres Cerri, Mayr: May; second year. — F. Walker. 



