April, 1914.] Unreported Cecidia from Connecticut. 
293 
Ostrya virginiana. Leaf Gall. Gall maker, Eriophyes sp. 
A small, sub-spherical pocket gall generally on the upper 
side of the leaf. 1-2 mm. dia. Red tinged, smooth. Opening 
below marked by a tuft of white hairs. Few or many on leaf. 
Not common. Fig. 10. 
Rhus copallina. Leaf Gall. Gall maker, Eriophyes sp. 
A terminal mass of dwarfed branches, bearing abortive leaves, 
the leaflet margins of which are strongly inrolled. In addition 
the leaflets are more or less contorted. No definite erineum present. 
A gall identical to this has been collected on R. glabra. 
Fig. 17 illustrates merely one of the numerous dwarf branches. 
Fig. 17. 
Jarvis, 39th Ann. Rept. Ent. Soc. of Out. 1908. p. 90 (35) a 
similar gall on Rhus typhina. 
Salix sericea. Leaf Gall. Gall maker, undetermined. 
A monothalamous, elongate, irregular, tubular gall formed in 
the blade of the leaf near to and paralleling the margin. The 
edge of the leaf is turned, simulating the nest of a leaf roller insect. 
There .is, however, a marked hyperplasia of tissue. 1-1 cm. 
long. Smooth, light green above. Thin walled. The escape¬ 
ment pore is below at the distal end. No larvae or pupae present 
Sept. 1. Fig. 18. 
A similar gall is found in England on Salix viminalis caused by 
Cecidomyia marginem-torquens, Wtz. See Connold, (23) British 
Vegetable Galls, p. 194. 1902. 
Solidago odora. Terminal Brxd Gall. Gall maker, undetermined. 
A monothalamous gall probably formed by the transformation 
of the growing point of the terminal bud into an olive shaped 
structure, 15 mm. long, 11 mm. wide. Base enveloped by an 
involucre like mass of overlapping leaves. Surface reticulately 
marked. Areas brownish. The distal region surrounding the 
mucronate tip, green and smooth. The single elongate flash¬ 
shaped cavity contains one large white larva. In long, section 
the walls are observed to be composed of a compact pith, thru 
which more or less prominent vascular bundles are distributed. 
Not common. Fig. 19. A longitudinal median section is shown 
in Fig. 19, a. 
Spirea latifolia. Bud Gall. Gall maker, a cecidomyid insect. 
Galled terminal and lateral buds. The leaf primordia deve- 
lope into thick green scales, which overlapping form the large 
larval chamber within. 7-10 mm. in length. Many larvae (pos¬ 
sibly inquilines) to a gall chamber. Possibly one of the following: 
Fig. 20. 
Jarvis, “A bud-like sessile gall in the axil of the leaf.” ‘‘Un¬ 
described)” 39th Ann. Rept. of the Ent. Soc. of Ont. 1908. p. 90. 
Felt, (29) reports a ‘‘terminal globular bud gall, 4 mm. Hor- 
momyia clarkei, Felt.” 
