22 Bulletin 2: Springfield Museum. 



Andricus (Callirhytis) palustris Bassett, Amer. nat., L882, v. 16, p. 246. 



Ashmead, Trans. .A mer. ent. soc, 1885, v. 12, p. 294. 

 Packard, r> 1 1 » rept. U. S. ent. comm., 1890, p. In;,. 113. 

 # Beutenmiiller, Bull. Amer. mus. liiit. liist., 1892, v. 4. p -.'."it;. 

 Dryophanta palustris Cresson, Trans. Amer. ent. soc, 1887, v. 1 !, suppl., p. 17'.). 



Bassett, Trans. Amer. ent. soc, L890, v. 17, p. 74. 

 Andricus palustris Jarvis, 37th ann. rept. Ent. soc Ontario, 1906, p. 71. 

 Westwood (quoting Bosc), Intr. mod. classif. ms., 1840, \. 2, p. 131, probably refers 



to this species. 



Spherical, fleshy, smooth, hollow gall on young leaves. Monothala- 

 nious. The larval cell spherical, rolling about, unattached. Green, 

 becoming brown. About 1 cm. in diameter. Rather common on pin oak, 

 Quercus palustris. Abundant on aments and leaves of scarlet oak, (J. 

 coccinea, and scrub oak. Quercus nana. Insects in May. 



Quercus coccinea. 

 Cecidomyia foliora Russell and Hooker. See p. 21. 

 Cecidomyia majalis Osten Sacken. See p. 17. 

 Cecidomyia pustuloides Beutenmiiller. Fig. 36. 



Cecidomyia pustuloides Beutenmiiller, Bull. Amer. mus. nat. hist.. 1907, v. 23, p. 390. 



Irregular, blister-like, hard galls projecting from either or both sides 

 of the leaf. Many on the edge, others scattered within the blade. One- 

 celled to several-celled ( ! ). Opening above or below. Leaf somewhat 

 puckered. Galls 1.5-4 mm. in diameter, about 1 mm. thick. Walls 

 rather thick, woody. Red, of color of surrounding parts of leaf when 

 found, Oct. 11. On scarlet oak, Quercus coccinea, and black oak, (J. 

 velutina. 



AmpJiibolips coelebs Osten Sacken. See p. IS. 



Amphibolips conjiuentus Harris. See p. 18. 



Ampliibojijis i mini* Osten Sacken. See p. 19. 



Amphibolips nubilipennis Harris. See p. 19. 



Amphibolips tinctoriae Ashmead. Fig. 19-20, 31. 



Amphibolips tinctoriae Ashmead, Proc. t". s. nat. inns.. 1896, v. 19, p. 125. 



Thin-walled, smooth, monothalamous galls, sometimes several together, 

 on tip of young twigs. Irregularly triangular in outline, much inflated 

 on one side, with a distinctly sharp edge. The brown larval cell held in 

 place by radiating filters. Has a thin but hard wall; 6-20 mm. long. 1-1 1 

 mm. wide. Green with dark spots when young, brown when mature. 

 Very abundant on one tree, from which many had fallen. Scarlet oak, 

 ( \> a e r<- n .s- coccinea, and black oak, (J. velutina. 



Near Port Jefferson, bong Island, N. Y., in October, 190*, the ground 

 under several oaks examined was literally strewn with these galls, which 

 there averaged considerably larger. .Many had their larval chambers 

 emptied, apparently by birds. 



