THE LESSER 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 denned 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. 
-The lesser corn stalk-borer: a, Male moth; 6, 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. 
