176 Journal New York Entomological Society. [Vol. xxiv, 



series referable to Hormomyia and its near associates, and particu- 

 larly to Monarthropalpus Rubs. The type is O. sarcohati n. sp. 



Onodiplosis sarcobati new species. 



This remarkable midge was reared May 24, 191 4, by Mr. P. H. 

 Timberlake from a bud gall on Sarcohatiis vcrmiciilatiis, collected on 

 the west shore of Utah Lake. Only two females were reared. 



Gall. An irregular, oval bud deformation, fleshy, becoming hard and ap- 

 parently composed of appressed, thickened bud scales, length 10 mm., diameter 

 6 mm. 



Female. — Length 3.5 mm., sparsely haired, brownish yellow; 14 segments, 

 the fifth with a stem one-third the length of the subcylindrical basal enlarge- 

 ment, the latter distinctly constricted near the middle and with a length two 

 and one-half times its diameter; subapically and basally there are sparse whorls 

 of short, stout setae and apically and near the middle, low, rather broad cir- 

 cumfili ; terminal segment reduced, irregularly suboval, with a length from one 

 and one-fourth to nearly twice its diameter. Palpus consisting of an irregu- 

 lar, tapering, sparsely setose segment having a length about twice its diam- 

 eter. Mesonotum shining dark brown or black. Scutellum a little darker, 

 postscutellum reddish brown. Abdominal sclerites dark brown or black, the 

 pleurae dark red, the ovipositor reddish, with a tuft of long, silky, yellowish 

 white hairs on the distal segment. Wings hyaline, subcosta uniting with the 

 margin near the middle, the third vein well beyond the apex, the fifth vein in- 

 distinct distally, joining the posterior margin at the distal fourth, its branch 

 near the basal half ; halteres pale yellowish, fuscous apically. Coxae black, 

 the legs a nearly uniform reddish; claws long, slender, simple, the pulvilli as 

 long as the claws. Ovipositor short, stout, with a length about one-half that 

 of the abdomen, the basal segment much stouter, with a length about twice 

 its diameter, the distal segment a little longer, much more slender, tapering 

 to an obtusely rounded apex and thickly clothed with long, sillvy, yellowish 

 white hairs, the latter having a length approximately one-half that of the 

 segment. 



Exuvium. — Length 3 mm., stout, the thoracic horns moderately stout, bi- 

 dentate. Mesonotum, wing cases and base of antennal cases variably infus- 

 cate, the antennal cases hardly reaching the base of the abdomen, the wing 

 cases extending to the third abdominal segment, and the leg cases to the fifth 

 abdominal segment, the dorsum of the abdominal segments with numerous 

 uniformly distributed, minute, triangular, chitinous points; posterior extrem- 

 ity broadly rounded. Type Cecid. 1642. 



Hormomyia caudata new species. 



The midges described below were reared April 29, 191 5, by Mr. 

 George G. Ainslie, of the U. S. Bureau of Entomology, from what 

 were evidently modified buds or shoots of a sedge, probably Cypcrns 



