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. 16. 



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 Ont. 19US. p. 90 (35) a 

 similar gall on Rhus typhina. 



Salix sericea. Leaf Gall. Gall maker, undeteniiined. 



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 K cm. 

 long. Smooth, light green above. Thin walled. The escape- 

 ment pore is below at the distal end. No larv£e or pupa; 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 Bud 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- 

 siblv inquilines) to a gall chamber. Possiblv one of the following: 

 Fig." 20. 



Jarvis, "A bud-hke sessile gall in the axil of the leaf." "Un- 

 described)" 39th Ann. Rept. of the Ent. vSoc. of Ont. 1908. p. 90. 



Felt, (29) reports a "terminal globular bud gall, 4 mm. Hor- 

 momyia clarkei. Felt." 



