INSECTS AFFECTING PARK AND WOODLAND TREES 7 1 3 



BLACK OAK 



»■» Twig gall 



Andricus scitula Bass., subcorneal, ^ to in. Ent. Soc. Phila. Proc. 3:683 



Leaf galls 



Callirhytis tumifica O. S., midrib swellings. Ent. Soc. Phila. Proc. 4: 356 

 Neuroterus favosus Bass., flattened polythalamous, to 1 in. Am. Ent. Soc. 

 Trans. 17 : 87 



Neuroterus pigra Bass., irregular midrib swellings ; beneath. Can. Ent. 13:105 



BLACK JACK OAK GALLS 



Andricus operator O. S., round, woolly, seedlike grains within. Ent. Soc. Phila. 

 Proc. 1 : 256 



Andricus nigrae O. S., elongate midrib swellings. Ent. Soc. Phila. Proc. 1 : 66 



BUR OAK 



Leaf galls 



Neuroterus flavipes Gill., hard, woody, midrib swelling, 1^ in. Gill. Ent. Am. 6:21 

 Neuroterus vernus Gill., enlarged petioles or swollen catkins. Gill. Ent. Am. 6:22 

 Neuroterus nigrum Gill., clustered, pimplelike, % 2 in. Psyche, 5:218 

 Philonix villosus Gill., globular; underside of midrib, 5/ r6 in. Psyche, 5:218 

 Philonix macrocarpae Bass., oval, faceted ; lateral veins beneath. Am. Ent. Soc. 

 Trans. 17 : 84 



Eriophyes querci Garm., green, yellowish gall, l / IO to V5 in. Pack. p. 213 



SCRUB OAK 



Twig galls 



Andricus similis Bass., clavate, apical. Ent. Soc. Phila. Proc. 3:685 

 Andricus ventricosus Bass., truncate, cone-shaped, x / 2 to ^ in. Ent. Soc. Phila. 

 Proc. 3 : 681 



Cynips rugosa Bass., round, sessile galls, y 2 to ^ in. diameter. Can. Ent. 13: 100 



Ament gall 



Dryophanta clarkei Bass., black, polythalamous, .08 in. Am. Ent. Soc. Trans. 17:79 



Bud galls 



Andricus patiens Bass. Am. Ent. Soc. Trans. 26:312 



Holcaspis fasciata Bass., apical clusters, mottled or banded. Am. Ent. Soc. Trans. 

 26 : 328 



Amphibolips verna Bass. Am. Ent. Soc. Trans. 26:321 



Neuroterus affinis Bass., round, thin, partly hidden by bud scales. Can. Ent. 13 : 103 

 Neuroterus corrugis Bass. Can. Ent. 13: 109 



Dryophanta gemula Bass., early acornlike, u xo in. Can. Ent. 13: 104 

 Dryophanta parvula Bass. Am. Ent. Soc. Trans. 26:326 



Leaf gall 



Andricus ostensackenii Bass., round, greenish yellow. Ent. Soc. Phila. Proc. 2 : 327 



