08 NEW YORK STATE MUSEUM 
numerous as those of some other species. They occur commonly in 
the vicinity of New York City, and about Albany, N. Y. They 
have been recorded from Ontario by Jarvis. 
The galls begin to appear in June and by October contain a full- 
grown larva. The latter remains in its retreat till the following 
spring, then transforms to a pupa and normally produces an adult 
probably early in June. The midge described by Osten Sacken under 
the name of Diplosis caryae as the maker of this gall is 
probably an inquiline. In any event it can hardly be a Caryomyia. 
Adopting recognized principles of nomenclature, we have restricted 
the name caryae to the characteristic larva found by Osten 
Sacken within the gall and described by him prior to the description 
of the adult. The type specimens of the gall in the Museum of 
Comparative Zoology confirm our identification of this interesting 
species. Platygaster caryae Ashm.and Ceroplaty - 
merus caryae Ashm. (Insect Life, 4:125) may have been 
reared from this gall. 
Gall. Gall (pl. 10, fig. 7) about 2 mm in diameter, irregularly 
subglobular, usually with a slight nipple, sometimes distorted by 
pressure of adjacent galls, yellowish green or brown, very sparsely 
clothed with short, whitish hairs, thin-walled, monothalamous. 
Larva. Length 2.5 mm, stout, white and easily distinguished by 

Fig. 8 Caryomyia caryae, 
breastbone of larva (en- 
larged, original) 
the rather] conspicuous breastbone (fig. 8) with its two slender, 
widely separated toothlike projections. Head small; antennae 
