Sept., 1917-] Felt: New Gall Midges. 195 



attached in white cocoons to the sides of the seed. Only one female 

 was reared, and the generic reference is tentative. 



Larva. — Length 1.5 mm. Moderately stout, pale yellowish. Head rather 

 short, stout, the antennae moderately long, tapering ; breastbone reddish brown, 

 strongly chitinized, bidentate, the posterior extremity somewhat obsolescent ; 

 skin coarsely shagreened, the terminal segment of the larva slightly bilobed, 

 the lobes broadly rounded. 



Female. — Length 2.5 mm. Antennae extending to the base of the abdo- 

 men, sparsely haired, fuscous yellowish; 17 or iS cylindrical segments, the 

 fifth with a length about one fourth greater than its diameter, the terminal 

 segment produced and tapering to a narrowly rounded apex. Palpi pale yel- 

 lowish, the first segment short, stout, irregular, the second minute, broadly 

 oval, the third twice the length of the second, broadly oval, the fourth twice 

 the length of the third and with a length more than twice its diameter (these 

 structural details were visible on only one palpus and not very distinct). 

 Mesonotum dark reddish brown, the submedian lines thickly black haired. 

 Scutellum reddish brown, with two black, submedian bristles ; postscutellum a 

 little darker. Abdomen dark reddish, the dorsal sclerites somewhat darker 

 and margined posteriorly with rather coarse black setae. Ovipositor with a 

 length about half that of the abdomen, short, yellowish or dark yellowish 

 orange, the terminal lobes narrowly lanceolate, with a length about three times 

 the width, and sparsely setose. Wings hyaline ; halteres mostly yellowish 

 transparent. Coxae and legs a nearly uniform dark brown. Claws simple, 

 the pulvilli about as long as the claws. Type, Cecid. a278o. 



Feltiella venatoria new species. 



The species described below was received under date of August 22, 

 1916, from Mr. D. K. McMillan, assistant to the state entomologist for 

 northern Illinois, accompanied by the statement that the larvae were 

 very efficient destroyers of red spiders, Tetranychus telarius and other 

 species on the leaves of elm and hollyhock, presumably at Chicago. 

 This form is easily distinguished from earlier described American spe- 

 cies by the markedly shorter stems of the male flagellate antennal 

 segments. 



Male. — Length 1.25 mm. Antennae nearly as long as the body, thickly 

 haired, mostly pale straw; 14 segments, the fifth having the stems with a 

 length one fourth and one half greater than their diameters, respectively ; 

 terminal segment, the basal portion of the stem with a length two and one 

 half times its diameter, the distal enlargement broadly oval. Palpi, first and 

 second segments short, subquadrate, the third with a length about three times 

 its diameter, the fourth a little shorter than the third and somewhat com- 

 pressed. Mesonotum fuscous yellowish. Scutellum and postscutellum pale 



