Sept., I9I3-] Felt: Descriptions of Gall Midges. 215 



longer than the second, and the fourth a little longer and more slender than 

 the third. Mesonotum yellowish brown. Scutellum and postscutellum yellow- 

 ish orange. Abdomen sparsely haired, reddish orange, the distal segments and 

 genitalia fuscous yellowish. Halteres yellowish orange, reddish apically. Coxje 

 and femora basally pale straw, the distal portion of femora, tibiae and basal 

 tarsal segments fuscous straw, the three distal tarsal segments mostly yellowish 

 straw. Claws unidentate, the pulvilli about as long as the claws. Genitalia : 

 basal clasp segment long, subtriangular ; terminal clasp segment long, subfusi- 

 form ; dorsal plate short, broad, slightly and roundly emarginate, the lobes 

 short, broadly rounded ; ventral plate long, divided, the lobes narrowly rounded. 

 Harpes slender, narrowly rounded apically, setose. 



Female. — Length 3.3 mm. Antennae nearly as long as the body, sparsely 

 haired, fuscous yellowish; zy segments, the fifth with a stem 1.4 the length 

 of the cylindric basal enlargement, which latter has a length about twice its 

 diameter and is sparsely clothed with stout setae ; terminal segment somewhat 

 produced, conical and partly fused with the penultimate. Palpi : first segment 

 short, second subquadrate, with a length thrice its diameter, the third twice 

 the length of the second, the fourth a little shorter and more slender than the 

 third. Mesonotum fuscous yellowish, sparsely haired, the submedian lines 

 yellowish. Scutellum reddish orange, postscutellum fuscous yellowish. Abdo- 

 men reddish orange, the stout ovipositor fuscous yellowish, about half the 

 length of the abdomen and recurved dorsally ; terminal lobes triarticulate, the 

 basal irregular, the second subquadrate, the apical narrowly oval, all sparsely 

 setose. Claws unidentate, the pulvilli as long as the claws. Type Cecid 02375. 



Dasyneura cercocarpi new species. 



The midges described below were reared April 21, 1913, from an 

 imbricated btid gall on Cercocarpus parvijolius, collected the preceding 

 October by Professor E. Bethel at Golden, Col. The female of this 

 species runs in our key next D. flaz'oabdojninalis Felt, while the male 

 approaches in characters D. aromaticce Felt. 



Gall. — 8 to 10 mm. in diameter, elongate, oval, white or slightly brownish 

 and thickly tomentose. This gall is an arrested, imbricated bud containing 

 several larvae. 



Larva. — Length 2 mm., reddish orange. Head moderately large. An- 

 tennae tapering, with a length fully three times the diameter; breastbone well 

 chitinized, bidentate, the teeth triangular. Skin coarsely shagreened, posterior 

 extremity broadly rounded. 



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

 haired, dark brown; 16 segments, the fifth with a stem as long as the cylindric 

 basal enlargement, which latter has a length ^ greater than its diameter; 

 terminal segment reduced, narrowly oval. Palpi : first segment irregular, the 

 second with a length nearly three times its diameter, the third Y2 longer and 

 more slender, the fourth ^4 longer than the third. Mesonotum shining brown- 



