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ECONOMIC ENTOMOLOGY 



The grub of Agriotes mancus is cylindrical, pale brownish-yellow, 

 highly polished, with two black pits on last segment which tapers 

 gradually to a brown point, and about an inch long when full grown. 



Melanotus spp. {Corn Wireworms). — The larvae spend 2 to 5 years 

 in the soil, and feed on corn, and other cereal and forage crops. 

 Common species observed: M. communis, M. fissilis, M. cribulosus. 



Hyslop reports that larvae of Melanotus are largely confined to 

 poorly drained and heavy sour soil. They spend 2 to 5 years in the 



Fig. 195. — The dry-land wireworm (Corymbites noxius): a, adult; b, larva; 

 c, under surface of head of larva; d, side of last segment of larva. All enlarged. 

 {After Walton, U. S. Bur. Ent.) 



soil; pupate in July-August, adults transforming 12-22 days later, 

 but emerging the following spring. 



The grub of Melanotus communis is smooth and shining and of a 

 light brown color; the last segment ends in a blunt tubercle. 



The grub of Drasterius elegans is one of the smallest wireworms, 

 being 3^^ to 3^^ inch long, and of a light waxy yellow color. The last 

 segment has an acute apical notch, is nearly flat, and roughish above. 



