THE LESSEE CORN STALK-BORER. 



11 



the second and beginning of the last segment. Maxillary palpi pencil-tufted. 

 Proboscis long, strong, scaled. Ocelli present. Antennae brownish, simple, bent 

 and expanded above the base, with a heavy tuft of scales in the bend in the male; 

 in the female more slender and without the tuft. (Fig. 6.) 



Thorax ochre-brown to blackish. Legs brownish gray, darker on the outside; tarsal 

 segments bright yellow. Forewings very narrow, much elongated, 8-9 mm. long; 

 distal margin oblique, posterior margin waved; in male (fig. 6, a) ochre-brownish on 

 posterior margin from base out, with a poorly defined median stripe of ochre-brownish 

 reaching almost to distal margin; remainder of margin varying from a narrow edging 

 of brown to a complete covering of wing with blackish to plumbago; disk yellow- 

 ochreous to reddish; on subdorsal vein slightly before middle where posterior margin 

 begins to darken lies a dense brown dot marking position of first transverse line; 

 diagonally outwards above it upon median vein is a smaller dot and beyond a more 

 prominent one on cross vein; both lie in the bright median space but close to yellowish- 

 brown shading of anterior margin; distal margin marked by row of black confluent 

 dots within which is indistinct grayish stripe dusted with whitish atoms; within this 

 in the dark color of surface appears beginning of second cross line very close to distal 



FIG. 6. — The lesser corn stalk-borer: a, Male moth; b, forewing of female moth. 

 Greatly enlarged. (Original.) 



margin and most apparent on anterior margin; fringes brownish gray, beneath shining 

 brownish gray; in the female (fig. 6, b) markings are the same but generally darker 

 than in male; dot on the subdorsal vein enlarged but not prominent, dot on cross 

 vein somewhat more distinct. Hind wings white, pellucid, somewhat grayish or 

 brownish along anterior and distal margins and at apex shading back into the wing 

 for a greater or less width; fringes whitish, brownish toward apex and bearing a faint 

 yellowish line paralleling margin; beneath along anterior margin browner than above. 

 Venation: Forewings, eleven veins, 4 and 5 separate, 10 separate; hind wings, 2 

 more or less distant from angle, 4 and 5 stemmed, 6, 7, and 8 stemmed, cell rather 

 short. 



Abdomen yellowish to fuscous, darker in female; terminal tuft of male yellowish 

 at the end and in the middle, gray laterally, darkening toward end ; of female yellow- 

 ish. Male genitalia: Uncus longer, more slender than usual in related genera, bifid 

 at base; these parts arched; the spine long, harpes broad with long hairs along upper 

 edge forming somewhat of an anal tuft; a strong bent spine at base ; lower plate conical, 

 within entrance a long, slender, bent spine; last segment of abdomen beneath with 

 two tufts of hair. 



