INSECTS INJURIOUS TO BEETS AND SL'INACII I25 



The Beet Army Worm (Lapliygma cxigua Hbn.)-— This 

 species has come into prominence since the extensive cultivation 

 of the sugar-beet in the West. It is rapidly widening in distribu- 

 tion, chiefly by the flight of the mature insect, a moth resembling 

 the parents of the cutworms. This insect might be a still more 

 injurious sugar-beet pest than is yet known, save for the fact 

 that it attacks many other crops and weeds. 



The moth (fig. 79, «) is of a gray color, resembling the plain 

 form of the fall army worm, to which species it is related. The 



Fig. 79.— Beet army worm, a. Moth; b, larva, lateral view: c. larva, dorsal view: a. head 

 of larva; e. egg, viewed from above; f, egg, from side. All enlarged. (Authors illus- 

 tration, U. S. Dept. Agr.) 



fore-wings are broader and paler, and the reniform and other 

 spots as well as mottlings are more distinct. The wing expanse 

 is less than an inch and one-half. The larva is striped, as 

 shown at b and c. 



Remedies. — When occurring in numbers this insect can be 

 controlled by means of an arsenical, but when unduly abundant, 

 army worm remedies are necessary. 



The Beet Webworm (Loxostcgc sticficalis Linn.). — This in- 

 sect is, like the preceding, of foreign origin, and is also rapidly 



