452 JOURNAL OF ECONOMIC ENTOMOLOGY [Vol. 4 



Abies (spruce) 

 Seeds destroyed, the cone not deformed Dasynenra canadensis Felt. 



AcALYPHA viRGiNiCA (3-spotted Hiercury) 

 Subglobular, reddish bud gall, diameter 4 mm Cecidomyia sp. 



Acer (maple) 

 Rolled leaf margin, edges yellow, center crimson Cecidomyia sp. 



Acer negundo (box elder) 



Terminal bud galls, diameter 1 to 2 cm Cecidomyia negundinis Gill. 



Variable, subglobose leaf gall, diameter about 2 mm.. . Contarinia negundij olia Felt. 



Acer rubrum (red maple) 

 Under decaying bark Miastor americana Felt. 



Lestodiplosis sp. 

 Ocellate, yellow, red margined gall, diameter 5-6 mm. . . Cecidomyia ocellaris 0. S. 

 Distorted, roUed leaves bearing white cocoons Dasyneura sp. 



Lestodiplosis sp. 



Irregular leaf folds Rhahdophaga rileyana Felt. 



Pouch vein galls, reddish, length 6 mm Dasyneura communis n. sp. 



Acer saccharinum (white or silver maple) 

 Free larvaj on irregularly curled leaves Cecidomyia aceris Shim. 



Achillea millefolium (Yarrow) 

 Florets infested Clinorhyncha millefolii Wachtl. 



Actinomeris alternifolia 

 Globose bud galls Cecidomyia verbesinoe Beutm. 



Agrimonia (Agrimony) 

 Reared from florets Contarinia agrimonice Felt. 



Agropyron (quack) 

 Under leaf sheath Phytophaga destructor Say. 



Agrostis alba (red top) 

 Ovipositing on Dasyneura graminis Felt. 



Alnus (alder) 

 Subcorneal bud gall, diameter 6 to 12 mm Dasyneura serrulatce 0. S. 



Alopectjrus pratensis (fox-tail grass) 

 Reared from seeds Itonida setaria. Felt. 



Ambrosia (ragweed) 

 Reared from stems of giant ragweed Neolasioptera ambrosia: Felt. 



