HOUSEHOLD AND CAMP INSECTS 



6 7 



Fig. 31 Confused flour beetle: a, beetle from above; b, grub or larva, from above; 

 c, pupa, from below; all enlarged; d, e, and /, structural details. (After Chittenden, 

 U. S. Dep't Agr. Div. Ent. Bui. 4. n. s. 1896) 



ginger, cayenne pepper, baking powder, orris root, snuff, slippery 

 elm, peanuts and various seeds. The life cycle may be completed 

 under favorable conditions in 36 days and breeding appears to be 

 continuous in warmed buildings. A closely allied form with 

 similar habits, known as the rust-red flour beetle, 83 occurs mostly 

 in the southern states though it is recorded from New York State 

 and has been listed from New Jersey as associated with its close 

 ally in various food products. 



Fig. 32 Meal worm: a, larva; b, pupa; c, female beetle; d, egg, with surrounding 

 case; e, antenna. a, b, c, d, about twice natural size, e, more enlarged. (After 

 Chittenden, U. S. Dep't Agr. Div. Ent. Bui. 4. n. s. 1896) 



83 Tribolium ferrugineum Fabr. 



