THE FALL ARMY WORM,' OR “GRASS WORM,” 
AND ITS CONTROL. 
CONTENTS. 
Page. Page. 
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Where the fall army worm occurs.......-... 4 | History of the fall army worm in the United 
Economic importance and manner of injury - 4 States .:\- smemeer eter cle Je oko a ceases oes yee 9 
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Where invasions of the fall army worm origi- Wild bird and other enemies. ............... 2 
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INTRODUCTION. 
This bulletin has been prepared with the intention of supplying 
the farmer and others with the necessary information for the control 
of the fall army 
worm (see illus- & 
tration on title- Es 
page), together “#% 
with a brief ™ 
natural history 
of the species. 
ihas “pest ; 
which should not 
be confused with 
the true army 
worm,” is known, 
throughout the 
range of its in- 
jurious abun- 
dance, under 
Pra 
2 ah & 
many different Fic. 1.—The fall army worm: a, Male moth; b, right front wing 
names, some of of female both; c, moth in resting position; a, b, about twice 
C natural size; c, very slightly enlarged. (Original.) 
which are the 
“ grass worm,” “overflow worm,” “southern army worm,” “ Dagey’s 
corn worm,” “ grass army worm,” “ alfalfa worm,” etc. In Texas it is 
frequently called the “ budworm.” It is known in the North as the fall 
army worm because it occurs north of the Mason and Dixon line only 
in the late summer and fall. However, the injury inflicted by it 
under any of these names is usually disastrous to the farmer. 
GENERAL DESCRIPTION. 
The adult or parent of the fallarmy worm (fig. 1), a grayish moth, 
or “miller,” is seldom noticed, and the farmer is far more likely to 
1 Laphygma frugiperda S. and A.; order Lepidoptera, family Noctuidae. 
*The true army worm, Cirphis unipuncta Haw., is treated in Farmers’ Bulletin 731. 
60357° —Bull. 752---16 3 
