ILLUSTRATIONS 



Blackberry Seed Gall {Diastrophus cuscut.-eformis 

 OsTEN Sacken) ........ 



Blackberry Knot Gall (Diastrophus nebulosus Osten 

 Sacken) ......... 



Raspberry Root Gall (Diastrophus radicum Bass.) . 

 CiNQUEFoiL Axil Gall (Diastrophus potentill^e Bass.) 

 Oak or May Apple (Amphibolips confluentus Harr.) 

 Empty Oak Apple (Amphibolips in amis Osten Sacken) 

 Scrub Oak Gall (Amphibolips ilicifolije Bass.) . 

 Oak Spindle Gall (Amphibolips (Hclebs Osten Sacken) 

 Acorn Plum Gall (Amphibolips prunus Walsh) 

 Horned Knot Oak Gall (Andricus conigerus Osten 

 Sacken) ......... 



Oak Knot Gall (Andricus punctatus Bass.) 



Oak Seed Gall (Andricus seminator Harr.) 



Oak Wart Gall (Andricus futilis Ostein Sacken) 



Oak Nipple Gall (Andricus papillatus Osten Sacken) 



Scrub Oak Club Gall (Andricus similis Bass.) . 



White Oak Club Gall (Andricus clavula Bass.) 



Succulent Oak Gall (Andricus palustris Osten Sacken) 



Small Oak Apple (Andricus singularis Bass.) . 



Oak Petiole Gall (Andricus petiolicola Bass.) 



Oak Wool Gall (Andricus lana Fitch) 



Oak Capsule Gall (Andricus capsulus Bass.) 



Oak Midrib Gall (Andricus piger Bass.) 



Spiny Oak Gall (Cynips prinoides Beuten.) 



Pine-Cone Oak Gall (Cynips strobilana Osten Sacken) 



Oak Pea Gall (Cynips pisum Fitch) .... 



Oak Hedgehog Gall (Acraspis erinacei Walsh) 

 Oak Fig Gall (Biorhiza forticornis Walsh) 

 Oak Bullet Gall (Holcaspis globulus Fitch) 

 Pointed Bullet Gall (Holcaspis d uric aria Bass.) 

 Polished Oak Gall (Dryophanta polita Bass.) 

 Oak Flower-Stem Gall (Neuroterus pallid us Bass.) 

 Oak Potato Gall (Neuroterus bat at us Fitch) 

 Noxious Oak Gall (Neuroterus noxiosus Bass.) 

 Oak Flake Gall (Neuroterus floccosus Bass.) 

 Oak Button Gall (Neuroterus umbilicatus Bass.) . 

 Huckleberry Gall (Solenozopheria vaccinii Ashm.) 

 Lettuce Tumor Gall (Aulax tumidus Bass.) 



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