292 The Ohio Naturalist. [Vol. XIV, No. 6, 



Larvae bright salmon color, breast plate prominent. Evidently 

 mature Sept. 1. Galls common on Dulichium in the Conn, region. 

 Figs. 9, 10 and 10a. 



Hamamelis virginiana. Leaf Gall. Gall maker, unknown. 



A monothalamous, "groove" vein gall opening on the upper 

 side of the leaf. Affecting principal veins. Variable in length, 

 1-3 cm. long. Surface minutely roughened, green, turning black 

 when old. Not common. Possibly the same as Felt's (29) 

 "fleshy vein folds. Cecidomyia sp." Fig. 11. 



Juncus canadensis. Bud and Stem Gall. Gall maker, not 

 determined. 



Elongated bud-like galls made up of overlapping leaves. 

 The branch axes are very much shortened causing the leaves to 

 tightly enfold one another. From fotir to seven of these affected 

 branches or galls occur together in a cluster. Average length of 

 gall, 4 cm. Green. Fig. 12. 



A gall exactly similar to this is pictured by Connold (23) who 

 states that the gall is formed by the larva of Li via juncorum, 

 Latr. Reported from Hastings, England. Fig. 12. 



Mikania scandens. Stem Gall. Gall maker, undertermined. 



A large, monothalamous, fusiform gall of the stem internode. 

 1-2^ cm. long, j^ as wide. Six longitudinal low ridges divide the 

 surface area into as many faces. Surface smooth, color of the 

 normal stem. Texture tough almost woody. Cavity large (as 

 wide as the wall is thick) extending the length of the gall. A 

 single white larva found within. Fig 13. 



Muhlenbergia mexicana. Bud Gall. Gall maker, undetermined. 



A lateral bud gall formed by an extreme shortening of the 

 axis resulting in a compact structure made up of overlapping 

 leaves. The leaves, tho greatly reduced in length and much 

 broadened still show the sheath and blade portions definitely 

 divided by the minute ligule. 4 cm. long, 1 cm. wide. 



The larvae (Aug. 20th) just visible distributed in the spaces at 

 the very base of the sheaths. Fig. 14. 



Myrica asplenifolium. Leaf Gall. Gall maker, Eriophyes sp. 



A gall formed by the thickening and folding of the mid-vein, 

 with which it associated an incurling of the leaf edges. If the 

 entire mid-vein is affected, the whole blade is much contorted. 

 Reddish and smooth without. A thick, white pubescence fills 

 the cavity within. The trichomes are highly elongated. Not 

 common. Fig. 15. 



