Quercue phelloa 
Willow Oak 
"Root" galls 
Flower galls 
Callirhytis operator (O.S.) sex.gen. 455a. Fig.58. Woolly, white. 
Callirhytis myrtifoliae (Beut.). 451. Fig.56. Arrowhead-shaped, one-celled, 
scattered along staminate axis, drying to purple-black. 
Globular, short-pubescent. Fig.55. 
Acorn galls 
Callirhytis operator (O.S.) agamic. 455b. Fig.65. A pip gall in fall beside 
a mature acorn. 
Amphibolips fuliginosa Ashm. 282. A plum gall on side of acorn cup, 7-10 mm. 
in dia., dropping in the fall. 
Amphibolips sp. larger, light-colored, not wrinkled; adult 2nd.spring. 
Callirhytis middletoni Weld. 449. Fig.62. A pip gall dropping in early May. 
An outer fleshy layer decays leaving a hard shell with a rough surface 
as in the photo. 
Callirhytis balanopsis Well. 406. Fig.76. A pip gall in the fall on young 
acorns of the current season, secreting honeydew. 
Callirhytis balanacea Weld. 405. Fig.64. A pip gall on small acorns of the 
current season, 6.5 mm. in dia., green,bare, secreting honeydew. 
A stone gall in a mature acorn in fall like Fig.70. 
A pip gall on young acorns on new growth in June. Lanham,Md. 
Bud galls 
Amphibolips spinosa Ashm. 295* Fig.99* Lemon-shaped. Collected on ground 
Oct. to Feb. 
Amphibolips citriformis Ashm. 278. Fig.250. Spindle-shaped, thin-walled, 
22 by 12 mm., in early spring. 
Amphibolips globulus Beut. 284. Fig.102. Type galls are like photo and 
labeled:"VI. Lakehurst,N.J." and on Q, marilandica . 
Small, green, smooth, not secreting honeydew, in fall. 
Amphibolips sp. Spindle-shaped, 15- 20 mm. long, green, in Oct. 
Stem galls 
Woody stem swellings 
Callirhytis clavigera (Ashm.). 412. Fig.ll6. A horned knot gall but the 
horns do not drop out. 
Callirhytis medullae (Ashm.). 448. Fig.154. Gradual swelling on side of the 
twig in spring. "Adults the next Feb. and Mar.". I have never reared it. 
Callirhytis phellos (Ashm.). 467* Fig.124. .Club-shaped at end of new shoots 
in spring with radiating fibers about the larval cell. $-5 mm. in dia. 
Eumayria longipennis (Ashm.). 5^4. Woody enlargement at the base of lateral 
branches or on shoots, 8-10 mm. long by 5*5-4 mm. in dia. Types reared 
in May. Entered from literature. Fig.500. 
Detachable 
Dryocosmus imbricariae (Ashm.). 597* Banded Bullet Gall. Globular, 7-10 
mm. in dia., red, in group on twigs, dropping when mature in fall. 
Callirhytis ventricosa (O.S.). 485. Figs.144-5. Conical, short-pubescent, 
sessile on trunk or twigs, green when young, turning brown & dropping. 
Andricus formosus (Bass.). 510. Fig.l47* Fig-shaped galls in cluster on the 
twigs in spring dropping when mature in June. 
Callirhytis difficilis (Ashm.). 420. Fig.159* Small, rugose, grayish, in rows 
from furrows in bark, dropping when mature in Oct. 
Andricus coronus Beut. 5ol» Terminal cluster of ridged galls pointed at both 
ends in early spring, wall thick with central larval cell. 
Dryocosmus floridensis (Beut). 596. Fig.297* A rosette of green bracts 
sessile on trunk or clasping twigs, larval cell in center. 
70 
