IXSKCTS AFFECTIXr; I'AKK A \ n W ( )Or)LAN D TREES 62 1 



Smooth, Haltish, sessile, yellowish green galls on both sides of the leaf 



]' o n I a n i a tl e s ni o d i o i d e s, jj. 638 

 Fleshy, reddish galls in parallel rows on either side of the midrih 



r o n t a n i a h y a 1 i n a. p. Ci ?8 

 A conelike deformity on tlie ti|)s of willow shoots 



Willow cone gall, R h a b d o p h a g a s t r o li i 1 o i d e s, p. 639 

 Ajfccti 11}; Ti ■ifi/i -liazii 

 Conical, green or reddish galls on up])er surface of the leaves 



Witch-ha/.el cone gall, 1 1 o r m a phis h a m a m e 1 i d i s, p. 639 

 Many spined, green or reddish bud galls 



Spiny witch-hazel gall, H a m a ni e 1 i s t e s s ]) i n o s ii s, |). C43 

 Ajfi'cting biiih 

 Deformed catkins with enlarged, globular seeds 



Hirch seed gall midge, O 1 i g o t r o p h u s b e t u 1 a e, p. (147 

 Affediiij; sumac 

 Pear-shaped, round or reddish galls on the leaves , 



Sumac tomato gall, 1* e m p h i g u s r h o i s, p. 647 

 Affecting liacklnir v 

 Broadly rounded elevations on the under surface of the leaf 



Hackberry nipple gall, F a c h y p s y 1 I a c e 1 t i d i s - in a m m a. p. 647 

 Affecting rose 

 A large, smooth, reddish brown root gall . . Rose root gall, R h o d i t e s r a d i c u m, p. (147 

 Fibrous, mosslike masses on rose and blackberry bushes 



Rose bedegar, K h o d i t e s r o s a e, p. 647 



Irregular, spheric, mealy galls Mealy rose gall, K h o d i t e s i g n o t a, j). 647 



Round galls covered with ])rickly spines.. Spiny bullet gall, Rhodites b i c o 1 o r, p. 647 



Smooth rounded galls on twigs t'llobular rose gall, R h o il i t e s g 1 o b 11 I u s, )). 6 47 



Elongated, hard, woody galls on twigs 



Long rose gall, Rhodites d i c h 1 o c e r u s, ji. 648 

 An oblong or rounded gall on wild rose twigs 



Knotty rijse gall, Rhodites v c r n a, p. 648 

 Affecting evergreens 

 Stunted pitch jiine needles with basal enlargement 



Pine needle gall fly, Cecidomyia p i n i-r i g i d a e, p. 423 

 Balsam needles with basal enlargement 



Balsam gall midge, C e c i d o m y i a balsa m i c o I a, |). CS5 



