382 . The Ohio Naturalist. [Vol. XV, No. 2, 



Fig. 24. Quercus imbricaria affected by the gall-wasp 

 Amphibolips nubilipennis Harris. 



Cynips nubUipennis Harris, Rep. Ins. Mass. Inj. Veg. 1841:399. 



Cal/aspidea nubilipennis Fitch. 



Cynips quercus sctdptus Bassett. 



C. quercus sculpta Walsh. 



Amphibolips sculpta Mayr. 



Beutenmuller, Bull. Am. Mus. XXVI. 



Leaf-gall, globular, succulent, translucent, "about 12-20 mm. 

 in diameter and has a very striking resemblance to a large white 

 grape," (Beutm.) Not common. 



Fig. 25. Quercus rubra affected by the gall-wasp Amphibolips 

 confluens — form spongifica O. S. 



Cynips confluens Osten Sacken, Proc. Ent. Soc. Phil. 1:56. 



C. quercus coccinea O. S. 



Amphibolips cocciniae Ashmead. 



C. Q. spongifica O. S. (and Riley later). 



Amphibolips spongifica Reinhard. 



Amphibolips confluentus Beutenmuller, Bull. Am. Mus. XXVI. 



Leaf -gall, globular, suppressing part or all of leaf, at first 

 green, soon becoming light brown, with shiny, papery wall, con- 

 taining a spongy mass of radiating fibres covered with down, 

 which hold in place the oblong central larval chamber. 3-5 cm. 

 in diameter. Common at Huron. This insect shows an alter- 

 nation of generations, hence the long list of synonyms. 



Fig. 26. Quercus macrocarpa affected by the gall-wasp 

 Holcaspis mamma Walsh. 



Cynips q. mamma Walsh, Am. Ent. 1:102. 



Holcaspis duricoria Mayr. 



Cynips duricaria Packard. 



Holcaspis duricaria Beutenm. 



Diplolepis q. macrocarpa Karsch. 



Cynips macrocarpae Dalla Torre. 



Andrictis macrocarpae Dalla Torre and Kieflfer. 



Beutenmuller, Bull. Am. Mus. XXVI :31. 



Twig gall, acorn-like, globular to elongate, with prominent 

 conical projections at end. Single larval chamber in center of a 

 brown, wood}^ mass. Diameters variable, 5-12 mm. Common at 

 Huron late in July. 



Fig. 27. Quercus imbricaria affected by the gall-wasp 



Holcaspis globulus Fitch. 



Callaspidca globulus Fitch, 5th Rep. Nox. Ins. N. Y. 1858:811. 



Cynips globulus O. S. 



Beutenmuller, Bull. Am. Mus. XXVI. 



Twig gall, spherical, 5-15 mm. diameter, u.sually in clusters. 

 Yellow and pink-flushed, tough in texture when young, brown and 

 corky when old. Common in Huron. July. 



