INSECTS INJURIOUS TO BEETS AND SPINACH 



I-'5 



The Beet Army Worm {Laphygma 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, a) 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. (Author s 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 sticticalis Linn.).— This in- 

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



