Noctuidae 

 It 



IS a very 



common species in the Atlantic States, 

 and at times does considerable 

 injury to the crops. It has never, 

 however, equaled in destructiveness 

 the first species of the genus, to which 

 we have given our attention on the 

 preceding pages. It is said to be 

 particularly attracted to the wheat 

 when the grain is in the milk and 

 the heads are just maturing. The 

 damage done at this time is, in the 

 Middle States, where winter 

 wheat is commonly grown, due to 

 the first generation of the insects. 

 There are in fact two broods, one 

 appearing on the wing in spring or 

 early summer, the second in the late 

 summer. The latter brood, which 

 generally is more numerous than the 

 first, produces the caterpillars, the 

 pup£e of which yield the moths, 

 which, coming out in the spring of 

 the year, lay their eggs in the wheat- 

 fields. It is said that the habit of 

 attacking wheat in its period of matu- 

 ration has lately been acquired by this 

 insect, and is an illustration of the 

 way in which species, long regarded 

 as innocuous, develop with apparent 

 suddenness destructive tendencies. 



(6) Heliophila heterodoxa, Smith, Plate XXIV, Fig. }6, S . 

 (The Heterodox Wainscot.) 



The insect ranges from British Columbia and northern 

 California as far east as Minnesota. 



(7) Heliophila multilinea Walker, Plate XXIV, Fig. 39, $ . 



(The Many-lined Wainscot.) 



Syn. lapidaria Grotc. 



Not a scarce species in the Atlantic States. 



Fig. 113 — Heliophila albi- 

 linea. a. Larvae; b. Mass 

 of eggs laid on the stem 

 of wheat ; c. Egg viewed 

 from above ; d. Egg viewed 

 from the side ; (eggs great- 

 ly magnified) . (After 

 Riley.) 



202 



