October, '11] FELT: GALL MIDGE HOSTS 458 



Amelanchier (shadbush) 

 Truncate leaf gall, greenish, tapering, red-lij)pe(l, length 5 mm. 



Hormomyia canadensis Felt. 

 Oval, woolly, vein gall, yellowish or white, length 1 to 1.5 cm. 



Itonida canadensis n. sp. 

 Flattened, white pouch gall on leaf margin, denticulate, length 3 to 4 mm. 



Cecidomyia ep. 

 Leaf fold containing white larva? Cecidomyia ep. 



Amphicarpa monoica (hog peanut) 

 Oval stem gall, length, 1.5 em. diameter, 1 cm Ijasioplera sp. 



Amsinckia lycopsoides 

 Undescribed, presumably bud gall Schizomyia macrofila Felt. 



Anemone canadensis 

 Slightly enlarged, loose bud gall Dasyneura anemone Felt. 



Antennaria (everlasting) 

 Corm-shaped bud gall, leaflets recurved, length, 8 to 12 mm. 



Asphondylia antennarioe Whir. 

 Elongate, oval bud gall, leaflets scarcely recurved, length 3 to 5 mm. 



Rhopalomyia antennarice Whir. 



White, wooly masses, snow-whi,te fibers, 5 mm. long, radiating from hard, thin 



shelled cells presumably on Antennaria. . i Rhopalomyia pilosa Felt. 



Anthemis (Mayweed) 

 Larva; in flower heads Cecidomyia sp. 



Apocynlm (spreading dogbane) 



Reared from slightly enlarged flower buds Itonida apocyni Felt. 



Reared from unopened flower buds Lestodiplosis apocyniflorce Felt. 



Arctium (burdock) 

 Yellowish larva> in burs Cecidomyia sp. 



Aristolochia (Dutchman's pipe) 

 Ovate leaf galls Cecidomyia hageni Aldr. 



Artemisia (wormwood) 



Bud galls, presumably Asphondylia artemisice Felt. 



Flower galls or fusiform bud galls, length 4 mm Rhopalomyia betheliana Ckll. 



Deformed flower heads, length 10 mm., diameter 5 to 6 mm. 



Rhopalomyia coloradella Ckll. 

 Globular, woolly galls, diameter about 1 cm Rhopalomyia allicola Ckll. 



Artemisia tridentata (sage bush) 



Subglobular, brown, spongy apical gall, diameter 1.8 cm Cecidomyia sp. 



Probably stem gall Diarlhronomyia arlemisioe Felt. 



Oval, bud-like, flower gall the size of a pea Rhopalomyia Iridentalce Rubs. 



