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 four 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 Livia juncorum, 
Latr. Reported from Hastings, England. Fig. 12. 
Mikania scandens. Stem Gall. Gall maker, undertermined. 
A large, monothalamous, fusiform gall of the stem internode. 
l-2m cm. long, y 2 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 larvce (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. 
