26 NEW YORK STATE MUSEUM 



Poa pratensis (Kentucky blue grass) 



Reared from an almost pure blue grass turf (Aldrich in litt.) Felt '15!, p. 149 



Itonid. Colpodia sanguinia Felt 

 Oall unrecognized. Felt 'o8e, p. 416 



Itonid. Colpodia pratensis Felt 

 Probably inhabiting stems. Howard '95, p. 13 



Hym. Grass joint-worm, Isosoma captivum How. 

 Howard '95, p. 15 

 Hym. Grass joint-worm, Isosoma maculatum How. 



Bromiis (brome grass) 

 Reared from grass stems. Howard '95, p. 1 1 



Hym. Grass joint- worm, Isosoma bromi How. 

 Reared from grass stems, B. c i 1 i a t u s. Howard '95, p. 16 



Hym. Grass joint-worm, Isosoma bromi cola How. 

 Boring stems. Webs. & Reeves '10 



Hym. Western grass-stem sawfly, Cephus occidentalis 



Ril. & Marl. 



Agropyron (couch or quitch grass) 

 Under leaf sheath. Felt '02, p. 705 



Itonid. Hessian fly, Phytophaga destructor Say 

 Boring stems. Webs. & Reeves *io 



Hym. Western grass-stem sawfly Cephus occidentalis 



Ril. & Marl. 



Boring grass stems. Howard '95, p. 12 



Hym. Grass joint- worm, Isosoma hageni How. 

 Fusiform swellings, length 4 cm, diameter 4 mm, composed of reduced leaves 

 and with a central gallery containing a yellowish white larva. 



Hym. Grass joint-worm, ? Isosoma sp. a2746 



Hordeum (barley) 



Under leaf sheaths. Felt '02, p. 705 



Itonid. Hessian fly, Phytophaga destructor Say 

 Reared from stems. Howard '95, p. 18 



Hym. Barley joint-worm, Isosoma hordei Harr. 



Secale (rye) 



Reared presumably from stems. Howard '95, p. 19 



Hym. Rye joint-worm, Isosoma secale Fitch 

 Howard '95, p. 20 

 Hym. Grass joint-worm, Isosoma fitch ii How. 



Elymus (wild rye) 

 Under leaf sheath. Felt '02, p. 705 



Itonid. Hessian fly, Phytophaga destructor Say 

 Probably, from stem gall. Felt '156, p. 90 



Itonid. Rhabdophaga elymi Felt 



