xya Same gall enlarged, showing the appearance of the upper 

 surface of the leaf and a side view of several galls 



1 8 Stem gall on thoroughwort produced by Neolasioptera 



perfoliata Felt 



19 Blossom bud gall on white snake root, Eupatorium 



u r t i c a e f o 1 i u m , from which has been reared L e s t o - 

 diplosis eupatorii Felt, true producer unknown 



223 



