THE BEETLES 



169 



The bill-bugs (Calandridae) are from one fourth to one half of an 

 inch long, black, brown, or dark gray, with hard elytra, ridged and 



FIG. 254. The granary weevil (Calandra granaria]. (Enlarged) 



rt, beetle ; l>, larva; c, pupa; d, the adult rice weevil (Calandra otyza}. (After Chittenden, 



United States Department of Agriculture) 



sculptured. They attack corn, timothy, and other grasses, particu- 

 larly the coarse swamp grasses and sedges. The fat white larvae 



c d 



FIG. 255. The fruit-tree bark-beetle (Scolytns riigulosus} 



a, adult ; b, same in profile ; <:, pupa ; d, larva (about ten times natural size). (After 

 Chittenden, United States Department of Agriculture) 



live in the crowns and stems of the plants. More important are 

 the small granary and rice weevils (Calandra granaria and oryza), 



