240 Journal New York Entomological Society. [Voi. xx. 



The midge was reared by Dr. Shimer in midsummer from pale or 

 whitish larvae on the surface of white or silver maple leaves, Acer 

 saccharinum. Dr. Shimer states that this species produces whitish 

 cocoons upon the leaves, the midges emerging therefrom a week or 

 two later. We have referred the midges reared from soft maple by 

 J. S. Houser, of the Agricultural Experiment Station, Wooster, 

 Ohio, August 9 and 26, 1912, to this species, and in order to establish 

 its identity more fully give below descriptions of both sexes. The 

 species is closely related to R. rilcyana Felt, the latter being most 

 easily distinguished by the long fourth palpal segment, it having a 

 length twice that of the third. A study of a large series may show 

 R. rilcyana to be only a variety of Shimer's species. 

 Phytophaga ulmi Beutm. 



Male. — Length 1.5 mm. Antennae nearly as long as the body, sparsely 

 haired, dark brown; 14 segments, the fifth with a stem as long as the cylindric 

 basal enlargement, which latter has a length twice its diameter and a thick 

 subapical whorl of long, stout setas ; terminal segment produced, with a length 

 thrice its diameter, strongly tapering apically. Palpi whitish transparent, first 

 segment irregular, subquadrate, the second with a length over twice its diameter, 

 the third over J4 longer than the second, the fourth a little longer than the 

 third. Face fuscous yellowish. Mesonotum yellowish brown, the submedian 

 lines sparsely haired. Scutellum reddish brown, postscutellum fuscous yellow- 

 ish. Abdomen reddish orange, the dorsal sclerites fuscous. Wings hyaline, 

 costa dark brown. Halteres yellowish transparent, fuscous apically. Coxse 

 fuscous yellowish, the legs mostly dark brown, the distal tarsal segments darker. 

 Claws slender, strongly curved, the pulvilli as long as the claws. Genitalia : 

 dorsal plate deeply and triangularly emarginate, the ventral plate broad, broadly 

 and roundly emarginate. 



Described from a specimen reared June 6, 1912, from galls col- 

 lected at New Baltimore, N. Y., 31683. This sex was previously un- 

 known. A full description of the female and an account of the 

 species will appear in the writer's monograph of the Itonididse, now 

 in manuscript. 



Contarinia coloradensis, new species. 



Gall. — Length 1.25 cm., diameter i cm. A budlike deformity covered with 

 brownish scales and in one instance with rudimentary needles. 



Larva. — Length 3 mm., moderately stout, a variable yellowish orange. 

 Head small, the antennae short, stout, unidentate. There is a distinct fuscous 

 ocular spot just behind the head and a well-developed bidentate, somewhat 

 irregular breastbone. Skin coarsely shagreened, the posterior extremity rounded 

 and with a pair of submedian conical brownish tubercles. 



