October, '11] FELT: GALL MIDGE HOSTS 459 



CoRYLUs (hazel nut) 



Hairy loaf fold Lasiopteryx coryli Felt. 



Reared from same gall Mycodiplosis corylifolia Felt. 



Sterile catkins deformed basally, swollen Cecidomyia sp. (squamulicola Steh. 



Crat.egus (white thorn) 

 Keildish brown or green, blister leaf mine, diameter, 8 mm. 



Lasioplera excavcUa Felt. 



Keared from the same gall Rhizomyia hirta n. sp. 



Cylindric, green, fimbriate, unicellular leaf gall, length, 4 to 5 mm.; height, 1.5 mm. 



Rhizomyia abssobrina Felt. 



Reared from same gall Lestodiplosis crataegifolia Felt. 



iStoiit, cup-shaped, fimbriate, unicellular leaf gall Winnertzia hudsonici Felt. 



Cockscomb leaf gall, green and red, length, 1 cm.. . .Hormomyia cratoegifolia Felt. 



Filamentous, subglobular vein gall, length, 1 cm Cecidomyia bedeguar Walsh. 



Oval, fleshy vein gall, length, 5 to 8 mm Cecidomyia sp. (venoe Steb.) 



Marginal leaf roll Lestodiplosis florida Felt . 



Crotalaria (rattle box) 

 Fusiform stem swelling Cecidomyia sp. {croialarioe Steb.) 



CucuMERis (melon) 

 Reared from curled tips Contarinia setigera Lintn. 



CucuRBiTA (squash) 



Reared from rough squash Mycodiplosis cucurbitoe n. sp. 



Reared from rough squash Ifonida cucurbitoe n. sp. 



Danthonia (wild oat grass) 

 Probably a stem gall Lasioptera danlhonioe Felt. 



Desmodium (tick trefoil) 



Bud gall, probably loose Cecidomyia meibomiifolioR Beutm. 



Elongate, fusiform, clustered bud gall, length, 8 to 22 mm. 



Cecidomyia meibomia Beutm. 



Irregular stem gall, length, 1.8 era Lasioptera desmodii Felt. 



Polythalamous stem gall, length, 2 cm Neolasioptera hamata Felt. 



DiERViLLA (bush honeysuckle) 

 Green bud gall or enlarged fruit, length, 4 to 5 mm. . . Asphondylia diervilUe Felt. 

 Reared from apparently normal stem, diameter, .3 to 4 mm. 



Lasioptera caulicola Felt. 

 DiscoREA (Yam) 

 Irregular, warty .stem gall Cecidomyia sp. 



Elymus americanus (wild rye) 



Probably from stem gall Rhabdophaga elymi Felt. 



Stem gall Phylophaga destructor Say. 



Ephedra trifurca 



Irregular, subcortical, resinous gall Lasioplera ephedricola Ckll. 



Fusiform twig gall, length, 12 mm Lasioptera ephedra Ckll. 



