l62 NEW YORK STATE MUSEUM 



Dasyneura canadensis Felt 



1907 Felt, E. P. N. Y. State Mus. Bui. no, p. 157 

 1908 N. Y. State Mus. Bui. 124, p. 347, 350 



This pale salmon midge was reared by the late Dr James 

 Fletcher May I, 1907 from Cecidomyiid larvae infesting the seeds 

 of white spruce, Picea canadensis, taken in the vicinity oi 

 Ottawa, Canada. The larvae live within the seeds, and do not 

 produce a deformity in the cone. This species might become of some 

 economic importance on account of destroying spruce seed, though 

 Doctor Fletcher informed us that it was much parasitized by a 

 Proctotrypid and sparsely by a Chalcid. Microdus bicolor 

 Prov.? (Ins. Life 3:18) may be a parasite of this midge. Polygnotus 

 species was reared from this species. 



Male. Length 2 mm. Antennae nearly as long as the body, 

 sparsely haired dark brown, yellowish basally, a few of the terminal 

 segments reddish; mouthparts fuscous yellowish; 17 segments, 

 the fifth with a stem as long as the basal enlargement ; terminal 

 segment with the basal portion produced, narrowly oval. Palpi ; 

 the first segment subrectangular, the second a little longer, stouter, 

 the third one-half longer and more slender than the second, the 

 fourth a little longer and more slender than the third. Mesono- 

 tum reddish brown, sometimes darker, the submedian lines narrow, 

 rather thickly clothed with fine hairs. Scutellum pale yellowish re< 

 with a few coarse setae apically, postscutellum and abdomen a pale 

 salmon, the latter sparsely clothed with fine hairs ; genitalia fuscous ; 

 venter a pale yellowish orange, the subquadrate sclerites dark 

 brown. Wings hyaline, costa dark brown; halteres and basal por- 

 tion of femora pale yellowish, distal portion of femora and tibiae 

 fuscous yellowish, the tarsi a variable fuscous brown ; claws short, 

 stout, strongly curved, the pulvilli longer than the claws. Genitalia ; 

 basal clasp segment stout ; terminal clasp segment stout at base ; 

 dorsal plate broad, deeply and triangularly emarginate ; ventral 

 plate long, tapering slightly, broadly and roundly emarginate. 



Female. Length 2 mm. Antennae extending to the third abdom- 

 inal segment, sparsely haired, dark brown, slightly reddish distally, 

 the basal segments fuscous yellowish; 13 segments, the fifth sub- 

 sessile, subcylindric, tapering, with a length about twice its diam- 

 eter. Mesonotum a shining brownish black, submedian lines nar- 

 row, thickly haired. Scutellum fuscous yellowish with a few coarse 

 setae apically, postscutellum brownish black. Abdomen a pale 

 salmon ; ovipositor somewhat lighter. Ovipositor about as long as 

 the abdomen, terminal lobes long, slender, broadly rounded. Other 

 characters about as in the male. Type Cecid. a 1428. 



