THE EUROPEAN CORN BORER AND ITS CONTROL. 29 



Terminal half of antenna often curled in preserved specimens. Ocelli 

 present. 



• Dorsum of thorax cinnamon-brown in male, light yellowish brown in 

 female. Fore legs white exteriorly, fuscous internally. Ventral surface 

 of thorax, mesothorax and metathoracic legs covered with white hairs 

 and scales in both sexes. Inner spurs twice the length of outer ones. 

 Fore wings as wide as hind wings, costal margin gently curved toward 

 apex, anal angle rounded, inner margin straight. 



Fore wing of female dull yellow, the costa and inner two-thirds of wing 

 more or less streaked with dull brown; a serrate brown line crosses the 

 wing at about its outer third, followed externally by a narrow j^ellow 

 band, the outer margin of which is also serrate; external to this is a brown 

 band shot through with yellow toward the outer margin. Hind wing 

 grayish brown, with a rather broad, pale band at the outer third, begin- 

 ning a little behind the costa and extending nearly to the hinder margin. 

 In some specimens the fore wing colors are dull yellow and cinnamon- 

 brown, and the hind wings very pale brown with faint irregular streaks 

 or shades of darker, instead of as described above; beneath, pale, with 

 faint reproduction of the yellow band on the fore wing, its margins darker 

 but not serrate. Male fore wing somewhat more reddish brown with a 

 yellow discal spot, and a yellow serrate band at the outer third beginning 

 a little behind the costa and often cut into outwardly by inward exten- 

 sions from the darker color outside, tending to break it into a row of lunate 

 spots; hind wings more gray, with the band of the female hind wing 

 tending to disappear at its ends and become a large, elongate, rather 

 oval area; beneath, dark, with a faint reproduction of the light band of 

 the fore wing and a lighter shade corresponding to the oval area of the 

 hind wing; also light along the inner margin over quite a width. 



Fore wing (Plate II, Fig. 12): la very weakly developed, bending 

 slightly forward toward 16 at the basal fourth of the latter; 4 and 5 fairly 

 near at base, 5 arismg considerably behind the middle of the outer end 

 of the cell; cross vein closing end of cell nearly obsolete from 5 forward; 

 7 and 8 about as near each other at base as 4 and 5, 8-9 arising from the 

 end of the cell, but almost in contact with 10, which it follows closely for 

 some distance before diverging and forking, 8 extending almost exactly 

 to the apex. Base of lb enlarged, bearing a tuft of long, forwardly 

 directed hairs beneath. Hind wing (Plate II, Fig. 13) with three anal 

 veins; veins 3, 4 and 5 arising close together; cross vein forming outer 

 end of cell strongly re-entrant: vein 6 leaving the cross vein just before 

 it unites with 7-8. Frenulum in male consists of one long, stout spine; 

 in female (Plate II, Fig. 14), of two long spines and a shorter, more slender 

 one. Ventral surface covered with whitish scales. Dorsum of male 

 cinnamon-browTi (excepting first two segments which are amber yellow); 

 of female, amber yellow, the posterior border of each segment with a 

 fringe of white. 



