so 



Fir.. 57. Pnxictna oniithooalU fudioi>ta, adult 

 and larva". Natural size. (.Chittenden, U. S. 

 Dept. of Agriculture.') 



devouring, in fact, i\\c oiitiiv plant down to the ground. It has a varied 

 list of additional (ood plants, including wheat, potato, cabbage, beet«, 

 asparagus, salsify, ]H\u'h, raspln'rry, cotton, pea-vines, rape, the fruit of 



the tomato, violet, cucumber, 

 nun'ning-glorv, pigweeil, cotton- 

 wootl, rye, and the grasses. 



Tlie variety cudiopta (Fig. 57) 

 has been bred by us from larvjE 

 found eating leaves of clover and 

 corn. It has also been taken 

 eating tomato leaves and boring 

 into the fruit. Among the pub- 

 lished food i^lants of this variety 

 are wheat, pokeweed, turnip, 

 castor-bean, and various grasses. 



The species generally passes 

 the winter as a caterpillar, but 

 sometimes, according to Riley, 

 as a pupa or imago. The caterjiillars have been seen from June 26 

 onward, but are commonest in Illinois in July and August, where there 

 is perhaps but a single brood. In the South, however, there seem to 

 be at least two generations annually, one in April and the other in 

 June. Pupa^ were found in our [breeding-cages in an earthen cell 

 about half an inch below the siu'face. The adults (Fig. 55, 57, 58) are 

 of nocturnal habit, being often taken at lights and at "sugar." In 

 Illinois the species 

 is remarkable in the 

 fact that specimens 

 are very rarely 

 taken in any stage 

 in the early part of 

 the season up to 

 alnnit tlu^ first oi 

 July. In the South 

 they are common 

 throughout the sea- 

 son, a fact strongly 



indicating that the species does not survive our Illinois wintiM-s, 

 that scattering moths flying northward lay their eggs in our latitude 

 and jirodtice a midsinnmer brood o( larva^ from mid-.hine to early 

 September. 



These larva^ give origin to an abundance of moths in August, Septem- 

 ber, and October. I^^gg-s obtained .Vugust 22 hatcheii, according to 

 Chittemlen, three days later, indicating the occurrence in the District 



Fm. 58. The Cotton (.\it\vorm. Prodenia ornithogalli, adult. 

 Twice natunil size. 



and 



