27 
Late in the fall the common grass worm, or fall army worm (larva of 
Laphygma frugiperda), ranges through the cotton fields, feeding upon 
volunteer grass, and occasionally ragging the leaves of the cotton 
plant. Two allied native species, viz, Prodenia commeline and P. flavi- 
media, also occasionally feed upon cotton leaves. 
The larva of the handsome little butterfly known as Thecla peas 
feeds upon the leaves and occasionally bores into the bolls. 
The larvee of Acronycta oblinita and Anisota senatoria have also been 
found by Mally engaged in this work. 
In a limited section of the country, namely, in portions of Texas and 
the Indian Territory, the so-called garden webworm, Pyrausta rantalis, 
occasionally does some damage to the cotton crop, as it did in 1885. 
Feeding principally upon corn, its injury to cotton is incidental, yet it 
may, in the early part of the season particularly, do some little damage 
to this crop. Its preference for corn is noticed mainly when fields over- 
run with pigweed and careless weed (Amarantus spp.) are broken up 
for planting, and, in fact, these weeds seem to be its natural food. It 
will probably never do serious damage to cultivated crops, except 
where these weeds have been allowed to run wild for a season or so 
and are then plowed 
under and the land 
planted to some use- 
ful crop. The small 
green caterpillars 
feed upon the leaves, 
concealing them- 
selves between them 
during the day and 
skeletonizing them 
at night. 
The remedy for any ; e ; 
Fig. 15,—Schistocerca americana: adult female—natural size (from 
or all of these leaf- Tenant bikes 
feeding caterpillars, 
whenever one of them occasionally becomes so abundant as to threaten 
damage, as happened with the Arctia phyllira above mentioned, will be 
to spray with paris green, or dust it on dry, as for the cotton caterpillar. 

OTHER INSECTS WHICH DAMAGE THE LEAVES. 
Among the other insects which injure the foliage of the cotton plant, 
grasshoppers are the most prominent. Several species have this habit, 
and the list of cotton insects contains the names of fourteen which are 
found upon the plant. Here also the damage to cotton seems incidental; 
they feed by preference upon grass. The species which ordinarily 
cause the greatest alarm among cotton planters are the large American 
locust (Schistocerca americana) and the lubber grasshopper (Brachystola 
magna). The paris green treatment will again be effective here, but 
