INSECTS AFFECTING PARK AND WOODLAND TREES 713 



HLA<K «>AK 



Twig gall 

 Andricus scitula Hass., siibconical, ;>4 to i ^j in. Ent. Soc. Phila. Proc. 3:683 



Leaf galls 



Callirhytis tumifica O. S., midrib swellings. Ent. Soc. I'hila. Pioc. 4: 356 

 Neuroterus favosus Hass., flattened poiythalamous, '^ to i in. Am. Ent. Soc. 



Trans. 17 : S7 

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



III..\CK JACK OAK GAI.LS 



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



Proc. I : J56 

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



* urn OAK 



Leaf galls 



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

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

 Neuroterus nigrum Gill., clustered, pimplelike, '/12 in. Psyche, 5 :2i8 

 Philonix villosus Gill., globular; underside of midrib, 5 ',6 in. Psyche, 5 :2i8 

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



Trans. 17 : 84 

 Eriophyes querci Garm., green, yellowish gall, ' to to '4 in. Pack. p. 213 



St'KlIH OAK 



Twig galls 



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



Andricus ventricosus Bass., truncate, cone-shaped, 'i to S/g in. Ent. -Soc. Phila. 



Proc. 3 : 681 

 Cynips rugosa Bass., round, sessile galls, }< to -'4 in. diameter. Can. Ent. 13: 100 



Ament gall 

 Dryophanta clarkei Bass., black, poiythalamous, .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, y,o 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 



