62 The Bulletin. 



sound than by sight. These light-green, long-horn grasshoppers (Fig. 

 48) are frequent visitors to the tobacco field, where they do no slight 



Fig. 48.— " Katydid," about natural size. 

 (Photograph by the author.) 



amount of injury by eating large irregular holes through the leaves. 

 Katydids lay their eggs in the fall. The nymphs hatch in the early 

 summer and become full-grown the latter part of August. 



Katydids occur in woods, marshes, and weedy fields and only 

 wander to tobacco fields incidentally. The writer has seen tobacco 

 growing next to an old field, overgrown with briars, weeds, and young 

 pines, simply riddled by the nearly full-grown nymphs of Katydids. 



Control. 



Preventives. — From what has been said above, it may naturally 

 be inferred that the farmer should avoid planting tobacco near fields 

 which seem especially favorable for the development of these pests. 

 Clean cultivation tends also to deter these insects from entering 

 tobacco fields. 



Remedies. — The arsenates used against the more important insects 

 are entirely effective in keeping Katydids in check. 



Cabbage Looper. 1 



Also Called "Cabbage Plusia" and "Cabbage Wobm." 

 (Order Lepidoptera.) 



This insect is normally a pest of cabbage. Occasionally, however, 

 it becomes destructive to tobacco. 



The eggs of this insect are golden yellow in color and flattened on 

 the side next to the leaf and rounded on the other, the surface being 

 marked with many ridges. The larvae are light-green in color, with 

 stripes of lighter green on the sides of the body. (Fig. 49.) They 

 have a characteristic, looping gait, whence the name Cabbage Looper. 

 The pupa makes itself a thin, silken cocoon, usually on the underside 



1 Plusia brassiceae. 



