April, 1917 Bulletin of the Brooklyn Entomological Society 33 



striate with anastomosing lines in the area of the dark blotch, the lateral 

 and anterior portions prominently reticulate like the occiput ; bristles 

 normal to the genus, there being one long closely appressed pair near the 

 posterior angles. Pterothorax brown in general color, with a more or 

 less distinct pale girdle just behind middle coxae; mesoscutum about as 

 closely striate as prothoracic blotch, the lines converging (as usual) to 

 three points on posterior margin; metascut'um nearly as closely longitudi- 

 nally striate. Fore wings brown at extreme base, then with a narrow, 

 white, transverse band, the remainder of wing brownish gray, slightly 

 paler toward apex; nearly twice as wide just beyond scale as at middle, 

 the greatest subbasal width (exclusive of scale) about one tenth the length 

 of wing; costal margin with about 27 equidistant bristles, anterior vein 

 with about 29, posterior vein (absent?) unarmed. Middle and hind legs 

 pale yellow, shaded more or less distinctly with brownish around middle 

 femora and tibiae, coxae brown. 



Abdomen moderately stout, about 1.6 times the width of prothorax; 

 segments 1-3 and 6 pale yellowish brown, 4 and 5 yellowish white, 7-9 

 dark brown, 10 yellow ; a dark line extends across base of tergites 2-7, 

 that on 7 being arcuate in median third instead of strictly transverse ; 

 posterior margins of segments produced at sides (and also at middle of 

 apical segments) into long, slender spines; pubescence absent from most 

 of median third of tergites 2-5, brown in color except on 4 and 5 ; seg- 

 ment ID divided above in apical two fifths ; bristles norman to the genus. 



Measurements of paratype : Length 0.864 ^oam. ; head, length 0.084 mm., 

 width 0.150 mm. ; prothorax, length 0.098 mm., width 0.200 mm. ; ptero- 

 thorax, width 0.252 mm. ; fore wing, length 0.714 mm., width near base 

 0.068 mm., at middle 0.035 mm. ; abdomen, width 0.328 mm. 



Antennal segments : 1234 



Length (m) 25 2>7 63 55 



Width (/x) 26 26 19 19 



Total length of antenna 0.299 mm. 



Male (macropterous). — Length about 0.8 mm. Color as in female ex- 

 cept that abdominal segments 1-3 and 6-8 are dark brown and concolorous, 

 4 and 5 being white and 9 and 10 brown, fading to yellowish at apex ; a 

 dark, straight line extends across base of tergites 2-9; three pairs of 

 minute black dots just basal to the transverse line of segments 2-8. 



Measurement of allotype: Length 0.768 mm.; head, length 0.072 mm., 

 width 0.150 mm.; prothorax, length 0.092 mm., width 0.192 mm.; pfero- 

 • thorax, width 0.228 mm. ; fore wing, length 0.618 mm., width near base 

 0.054 mm., at middle 0.030 mm. ; abdomen, width 0.198 mm. 



Antennal segments : 1234 



Length (^) 24 36 57 51 



Width (/*) 24 24 17 17 



Total length of antenna 0.283 mm. 



