118 FIRST AlSrXUAL REPORT OF THE STATE ENTOMOLOGIST. 



Bescription of the Caterpillar and Moth. 



The caterpillar is thick-bodied and almost cylindrical, tapering but 



slightly toward the head. 

 When full-grown it meas- 

 ures almost one inch and 

 a quarter in length. It 

 varies in color, in different 

 individuals, from pale 

 green to dark brown, 

 stri]ied in darker shades of 

 the same colors. The dark 

 caterpillars have on each 

 side a distinct, rather nar- 

 row yellowish stripe, upon 

 which is the row of oval 

 breathing-pores (spiracles). 

 There are several black, 

 shining, elevated spots or 



Fig. 27. — Heliothis armiger.— The corn-worm; a, tubercles On each Segment, 

 h, the eggs; c, the caterpillar; <^, the pupa within its co- i r i • i i i 



coon ; e, the moth; /, moth at rest (Riley). each 01 whlCh bearsa Short 



brown hair. One of these spots is placed just behind the spiracle, mak- 

 ing two conspicuous spots on tlte yellow lateral band of the more cen- 

 tral segments (at least, those bearing the four pairs of prolegs). This 

 characteristic feature, appearing like a pair of spiracles, is shown in 

 nearly all the illustrations which have been given of the caterpillar. 



The average expanse of the moth is about one inch and a half. It varies 

 greatly in color, from a yellowish-gray to a clayey-yellow, often tinged 

 with olive-greeu. The most distinctly marked examples have two often 

 interrupted, brown bands crossing the fore-wings, and a broader and 

 better defined one near to, and parallel with, the outer margin, upon 

 which is a line of black dots upon a whitish spot, placed on the ner- 

 vules. A black border defines the discal spot, which is often cresccnti- 

 form. The hind-wings arc of a paler shado, and have a broad blackish 

 outer band, which toward the apical portion incloses a pale spot rest- 

 ing on the margin and throwing the black bordering inward toward 

 the center of the wing. Beneath, the band and the discal spot of the 

 upper surface are quite conspicuous. 



The Moth a Day-l^eder. 



Mr. J. A. Moffat, of riimilton. Ontario, records {lor., cit.) its feeding 

 in the day time on the flowers of the golden-rod (*S'o/tV?(7^o), and in the 

 gardens of that place. He states of it: "A night-flyer properly, or in 

 the dark of the evening, it seemed to have been tempted from its hid- 



i 



