June-0ct.,i92i Bulletin of the Brooklyn Entomological Society 79 



prosternum. Antennae twice as long as the head; segment i 

 unusually large, concolorous with the head ; segment 2 urn- 

 shaped, nearly as dark as i ; 3 clavate, yellow in the basal 

 3/5, clouded with light brown apically; 4-6 similar in shape, 

 but the apical brown area becoming progressively larger and 

 darker; 7 and 8 all brown. Sense cones and bristles long, 

 but colorless. 



Prothorax (including coxae) about twice as wide as long. 

 Sides nearly straight, but diverging posteriorly. Posterior 

 angles rounded, bearing a single long, pale yellow bristle; 4 

 or 5 short, heavy bristles on the coxae. Two similar long, 

 yellow bristles along the lateral margin; one a little behind 

 the middle and the other near the anterior angle. A third 

 long yellow bristle near the posterior margin. Pterothorax 

 and abdomen a lighter brown than the head and especially 

 the prothorax. Sides nearly parallel and slightly arched. 

 Legs rather short ; fore femora considerably enlarged ; as 

 dark as the prothorax ; margined with short but rather thick 

 bristles. 



Abdomen large and heavy, cylindrical. Each segment 

 bearing a few short bristles on the posterior angles, and on 

 the posterior segments one or two medium long yellow ones. 

 Tube rather small and slender as compared to the abdomen; 

 sides straight, but converging posteriorly; terminal bristles 

 shorter than the tube. 



Winged form. Similar to the apterous, but smaller. 

 Total body length 2.2 mm. (2.0 to 2.4). Head — length 0.32 

 mm., width 0.24 mm. ; prothorax — length 0.24 mm., width 

 0.49 mm. ; mesothorax — width 0.52 mm. ; abdomen 0.60 mm. ; 

 tube — length 0.27 mm., width at base 0.105 mm., at apex 0.05 

 mm. Antennae — total length 0.68 mm. ; 



Segment i 2 3 4 5 6 7 8 



Length 57 71 109 100 96 86 67 50 



Breadth 50 36 36 37 36 34 32 24 microns. 



Wings long, membrane projecting far beyond the tip of 

 the abdomen, light brown, nearly clear at the base ; fringing 

 hairs long and slender, 13 to 18 interlocated ones. 



Male not seen. 



Larvae deep, orange red with antennae, legs and tube 

 brown. 



Described from three winged females and numerous apterous 

 ones and larvae. Collected from phylloxera galls on hickory at 

 Syracuse, N. Y., September, 1919, by Prof. Carl J. Drake, and 



