INSECTS AFFECTING PARK AND WOODLAND TREES 713 



IH.ACK OAK 



Twig gall 

 Andricus scitula Rass., subconical, '4 to i }< in. Miit. Soc. Pliila. I'roc. 3 : 683 



Leaf galls 



Callirhytis tumifica O. S., midrib swelliiii^s. V.nl. Soc. Phila. Proc. 4:356 

 Neuroterus favosus Kass., flattened polythalamous, '^ to i in. Am. Ent. .Soc. 



Trans. 17 : 87 

 Neuroterus pigra Bass., irretjular midril) swellings ; beneath. Can. I-lnl. 13:105 



KL.VCK .I.VCK OAK <;.\I>I,S 



Andricus operator ( ). S., round, woolly, seedlike {grains within. Knt. .Soc. I'hila. 



Proc. I : 2^h 

 Andricus nigrae (). S., elont,^ate midrib swcllini^s. Ent. Soc. Phila. Proc. i : 66 



Itl'U OAK 



Leaf galls 



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

 Neuroterus vernus Ciill., enlars^ed petioles or swollen catkins. Gill. Ent. Am. 6:22 

 Neuroterus nigrum (iill., clustered, pimplelike, '12 '"• Psjche, 5:218 

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

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



Trans. 17 : 84 

 Eriophyes querci Garm., yreen, yellowish gall, ' 10 to V5 in. Pack. p. 213 



S<ltlll OAK 



Twig galls 



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



Andricus ventricosus Bass., truncate, cone-sha[)ed, 'i to 5/8 in. Ent. .Soc. Phila. 



Pr.ic. 3:681 

 Cynips rugosa Bass., round, sessile galls, J,., to -'4 in. diameter. Can. Tint. 13: loc 



Ament gall 

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



Bud galls 



Andricus patiens Bass. .\ni. Ent. Soc. Trans. 26:312 



■Holcaspis fasciata Bass., apical clusters, mottled or banded. Am. 1-lnl. Soc. 'Trans. 



26: ^28 

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



Neuroterus affinis Bass., round, thin, parth- hiilden by bud scales. Can. Ent. 13: 103 

 Neuroterus corrugis Bass. Can. Ent. 13: 109 



Dryophanta gemula l?ass., early acornlike, '>,, in. Can. Ent. 13: 104 

 Dryophanta parvula Bass. Am. Ent. Soc. Trans. 26:32^ 



Leaf gall 

 Andricus ostensackenii Bass., round, greenish yellow. Ent. Soc. Phila. Proc. 2 : ^27 



