34-6 ENTOMOLOGICAL NEWS. [Oct., 



A New Root Gall Mtdge from Smilacina (Dipt.). 



BY SHERMAN C. BISHOP, Clyde, New York. 



Dasyneura smilacinae n. sp. 



The insect described below was reared by me at Ithaca, New 

 York, January 15, 1910, from root galls on false Solomon's 

 Seal, Smilacina racemosa. 



Female. Length 1.5 to 2.5 mm. Face, light yellow, slightly darker 

 at apex ; labrum, yellow, somewhat darker at tip and fringed on its 

 free margin with fine hairs. Antennae, dark brown; 17 sessile seg- 

 ments, extending to second abdominal segment; basal segment, goblet 

 shaped; second, globular and inserted in hollow of first; first two and 

 basal half of third segments lighter in color than remaining segments; 

 the fifth cylindric, with a length about twice its diameter ; subbasal 

 whorl sparse, subapical whorl long, scattering; terminal segment nar- 

 rowly conical, with a length three times its diameter and tapering 

 rather abruptly from the distal third. Palpi quadriarticulate, first seg- 

 ment subquadrate, the second rectangular with a length three times 

 its diameter, the third one-half longer, more slender; the fourth longer 

 and more slender than the third. 



Pro- and meso-thorax marked dorsally with three dark brown longi- 

 tudinally extending spots, placed side by side, with center one slightly 

 cephalad. Center spot rounded in front, tapering to a point behind. 

 Outer spots roughly crescent shaped, with convex sides placed towards 

 the center. 



Abdomen light yellow or white, covered dorsally with brown scales, 

 forming broad but somewhat indistinct bands. Posterior margins of 

 segments fringed with long yellow hairs. Ovipositor, fully extended, 

 about three- fourths as long as body; terminal lobes with a length four 

 to five times their width, slightly tapering, thickly setose ; minor lobes 

 short. 



Wings hyaline covered sparsely with long light brown hairs ; sub- 

 costa uniting with costa at the basal third; the third vein slightly 

 curved and joining the margin at the distal ninth; the fifth at the 

 distal fourth, its branch just before the basal half; costa thickly clothed 

 with brown hairs and a few elongated scales. 



Halteres with stalk transparent and knob light brown or with an 

 opaque spot. 



Legs, light straw, sparsely covered with short light brown hairs. 

 Tarsi somewhat darker ; first two segments as long as last three ; claws 

 slender, strongly curved, unidentate, the pulvilli a little shorter than 

 the claws. 



Male. Length, i mm. Antennae probably with 17 segments, the 

 fifth with a stem about one-third the length of the cylindric basal en- 

 largement, which latter has a length twice its diameter. Stalks of seg- 

 ments lighter in color than basal enlargements. Other characters of 

 male indistinct, the one specimen being in very bad condition. 



