REPORT OF THE STATE ENTOMOLOGIST 1918 113 
claws. Ovipositor short, the terminal lobes somewhat protuberant? 
tapering, broadly rounded. Type Cecid. aro 50. 
Caryomyia persicoides Beutm. 
1862 Osten Sacken, C.R. Mon. Dipt. N. A., 1: 193 (Cecidomyia) 
1892 Beutenmueller, William. Am. Mus. Nat. Hist. Bit 4-267 
(Cecidomyia) 
1904 —— Am. Mus. Nat. Hist. Guide Leaflet 16, p. 28 (Cecidomyia) 
1906 Felt, E. P. Insects Affecting Park & Woodland Trees, N. Y. State 
Mus. Mem. 8, 2:619, 628, pl. 1, fig. 9 (Cecidomyia) 
1907 Beutenmueller, William. New Species of Gall Producing Cecido- 
myiidae, Amer. Mus. of Nat. Hist. Bul., 23:393 (Cecidomyia) 
1909 Jarvis, T.D. Ent. Soc. Ont., 39th Rep’t, p. 84 (Cecidomyia) 
1910 Cook, M. T. Mich. Geol. & Biol. Surv., Pub. 1, Biol. Ser. 1, paast 
(Cecidomyia) 
1910 Stebbins, F, A. Springfield Mus. Nat. Hist. Bul. 2, p. 13 (Cecidomyia) 
1918 Felt, E.P. N.Y. State Mus. Bul. 200, p. 46 
The gall only of this insect was briefly characterized by Osten 
Sacken in 1862. Other writers have been content to rest their 
identifications upon this brief characterization till Professor Beu- 
tenmueller described the larva in 1907. This gall insect appears to 
be widely distributed. It occurs rather commonly in the vicinity 
of New York City, about Albany and has been recorded by Jarvis 
from Ontario. 
Gall. This is a rather large, irregular, monothalamous, hairy gall 
frequently 6 or 7 mm in diameter and usually clustered along the 
midrib. It may be distinguished from C. holotricha by the 
larger size, the shorter, curly hairs and the thicker walls. It turns 
to a variable brown or reddish brown in the fall. 
Larva. Length 2 to 3 mm, stout, whitish. Breastbone rather 
stout, unidentate, the tooth rather long, narrow, the shaft somewhat 
expanded anteriorly and posteriorly. This breastbone differs some- 
what from that described by Beutenmueller though it is very probable 
that the two are specifically identical. 
Exuvium. Length 2.75 mm, whitish transparent. Antennal cases 
short, extending to the second abdominal segment, slightly chitinized 
at the internal basal angles: Cephalic horns rather slender, short. 
Wing and leg cases extending to the third abdominal segment, the 
latter thickly margined with a band composed of four or five irregular 
rows of stout spines, the posterior spines markedly longer, the 
remainder of the dorsal surface rather thickly dotted with chitinous 
points. 
Female. Length 3 mm. Antennae extending to the second 
abdominal segment, sparsely haired, reddish; fourteen sessile seg- 
ments, the fifth with a length three and one-half times its diameter; 
circumfila near the basal third and apically. Palpi; first segment 
short, irregularly quadrate, the second short, very broadly oval, 
the third a little longer, rectangular, the fourth twice the length of 

