i88 



ECONOMIC ENTOMOLOGY 



ferens, and C. agrestis are recognized as destructive to grain, alfalfa, 

 beets and flax in the West in Montana and Alberta. The larvae begin 

 to mature about the middle of May but pupation m earthen cells does 

 not occur until the middle of June. The moths fly from June 15th- 

 Sept. 30th and the eggs are laid from August 24th-October 15th in 

 the soil in weedy summer-fallows. 



Porosagrotis delorata Sm. is injurious to wheat in June. In British 

 Columbia Eiixoa excellens Grote injures market gardens, and Neuria 

 procincta Grote injures farm crops (Fig. 127). 



Glassy Cutworm {Sidemia devastator Brace). — Translucent whitish, 

 tinged with bluish-green and without spots; tubercles brown, each with 

 a single hair; head reddish-brown; neckshield brownish. Active in 



Fig. 126.- 



-a, Moth of Glassy Cutworm {Sidemia devastator); b, larva. 

 Gibson, Bui. lo, Enl. Br. Can.) 



{After 



May and early June on hay and garden vegetables. Difficult to 

 kill by poison bait on account of its underground feeding habit 

 (Fig. 126). 



Yellow-headed Cutworm {Septis arctica Bdv.). — Pale smoky grey, 

 with head and neck shield tawny-yellow; without spots, ij^^ inches long. 

 Active in July on cereal crops and vegetables. (Fig. 127). 



Bronze Cutworm {Nephelodes emmedonia Gn.). — ^Large, i^ inches 

 long, with alternate stripes of olive-bronze and yellowish, a pale stripe 

 along the middle of the back, and two others on each side. Active 

 in grass lands in April and May. 



Zebra Caterpillar {Cer arnica picta Harris). — "Velvety black on the' 

 back; beautifully ornamented with two golden-yellow stripes on each, 

 side of the body, which are connected by narrow lines of the same color;' 



