April, 1914.] 
Unreported Cecidiafrom Connecticut. 
291 
Carya ovata. Leaf Gall. 
A bright red, sub-globular, monothalamous, fleshy gall on the 
under side of the leaflet. At first white, later red (July 16) 3 mm. 
high, 5 mm. broad. A slight papilla terminates the apex. Wall 
of larval chamber white, rest of tissue reddened. Larva white. 
Fig. 5. 
Castanea dentata. Leaf Gall. Gall maker, an undetermined aphid. 
A marked wrinkling and crumpling of the leaf particularly in 
the region of the mid-vein. No definite cavities formed. Aphids 
numerous, scattered in the folds of the distorted intervenal tissue. 
Not common. Fig. 6. 
Castanea dentata. Leaf Gall. Gall maker, Eriophyes sp. 
This gall consists of a yellowish erineum developed between 
the secondary veins of the leaf, chiefly on the upper side. Ex¬ 
hibits a shallow concavity above. 
Clematis virginiana. Bud gall. Gall maker, Eriophyes sp. 
A gall of the terminal leaf bud made up of the greatly hyper¬ 
trophied and rigid leaf petioles. These assume the form of ir¬ 
regular flattened scales. On each of the outermost ones the three 
minutes leaflets can be readily seen borne on the summit of the 
highly expanded petiole. The sub-spherical galled bud measures 
about 1 cm. in dia. The irregular cavities within are nearly 
filled by the dense growth of filamentous trichomes. This white 
pubescence chokes up the entrance way between the outermost 
scales. 
This gall often develops irregularly and the enlarged semi- 
woody petioles are so compactly pressed together, that its essen¬ 
tial morphology might be missed in a hasty examination. Fig. 7. 
Evidently the same gall as one produced on C. Flammula and 
described by Frank, A. B. (30). 
Decodon verticillatus. Bud Gall. Gall maker, a cecidomyid insect. 
A gall formed by the thickening of the two or three uppermost 
minute bud leaves of the terminal or lateral buds. Galled bud 
3-5 mm. long. Green. The two or three modified leaves neatly 
overlap forming a well protected chamber within, which contains 
a single salmon colored larva. Rather common. Fig. 8. 
Dulichium arundinaceum. Stem Gall. (Rachilla.) Gall maker, 
a cecidomyid insect. 
A monothalamous, open, “groove” gall of the rachilla. One 
or generally two intemodes involved. The normal rachilla is 
grooved both sides and the gall chamber is an enlargement of the 
deeper one whose edges are the membranaceous, decurrent bract 
base. The galled rachilla is so prominently hypertrophied that 
the affected spikelets can be picked out at a glance due to their 
greater width. 
