123 INSECUTOR INSCITI^E MENSTRUUS 



Female. — Length, about 15 mm. ; wing, 15 mm. 



Rostrum light brown; palpi dark brown. Antennae with 

 the scapal segments brownish yellow, the flagellar segments 

 indistinctly bicolorous, the base of each segment being a little 

 darker than the rest, the segments elongate-cylindrical. Head 

 light gray, rather strongly narrowed behind. 



Mesonotal praescutum brownish gray with four reddish 

 brown stripes, the intermediate pair narrow, indistinct an- 

 teriorly, running parallel to about midlength, then suddenly 

 bent outward, from which point they converge to near the 

 suture; lateral stripes short and broad; pseudosutural fovese 

 large but pale in color; remainder of the mesonotum reddish, 

 gray pruinose. Pleura brown, gray pruinose. Halteres rather 

 short, brown. Legs with the coxae gray ; trochanters obscure 

 yellow ; remainder of the legs dull yellow, the tarsi broken ; 

 pubescence of the legs moderately long, semierect. Wings 

 nearly hyaline on the anterior half, the posterior half of the 

 disk more brownish ; a dusky clouding across the submarginal 

 and posterior cells ; cells C and Sc faintly more yellowish ; a 

 rather heavy brown pattern, arranged as follows : A series of 

 small brown spots in cell R, arranged in two groups, the second 

 at the origin of Rs; stigmal area large, extending obliquely 

 back along Rs to near midlength of the latter ; a subocellate 

 blotch at the end of vein Ro ; very narrow, but dark brown 

 seams along the cord, outer end of cell ist M^, fork of 

 -^i+2> fork of -^2+3> ^^ the tip of Sc and at the ends of the 

 longitudinal veins ; veins brown, darker in the dark markings. 

 Venation : Sc^ extending to about opposite the fork of 

 i?2+3, Sc^ some distance from the tip, Sc^ alone being about 

 equal to the deflection of R^-\~r/, Rs long, strongly arcuated at 

 its origin; Rn-\--i very short, about as long as r-m; cell R2 

 long and narrow, its inner end pointed, its outer end suddenly 

 widened; r on R^ some distance from its tip, R^ beyond r 

 being subequal to that section of R., before it ; inner ends of 

 cells R^ and ist M, much farther proximad than R^ ; cell 

 ist Mo long, the basal deflection of Cu^ a short distance beyond 

 the fork of M; m one-half the outer deflection of M^ ; petiole 



