Larger oak apple gall, Amphibolips confluentus Hai 

 Two galls on a small twig 



Scrub oak gall, Amphibolips i 1 i c i f o 1 i a e Bass. 

 Two twigs bearing the peculiar fusiform galls 



Poplar stem gall, A g r o m y z a aeneiventris Fall 

 Several galls on twigs 



Willow gall midge, Rhabdophaga salicis Shrank 



Gall with pupal skins protruding therefrom 



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