6 
BULLETIN 1428, U. S. DEPARTMENT OF AGRICULTURE 
machines and in other fabrics from the sifters (fig. 5). Although 
such injury occurs chiefly while the machinery is at rest, the time 
required to patch the cloths, or the impaired efficiency resulting from 
Fig. 2. — Piece of paper taken from top of inside of carton of graham flour. Note 
perforations made by larva? and adults of cadelle developing within the flour 
the damage, constitutes a real loss. This type of injury is so severe at 
times that Johnson (1£) named the cadelle the "bolting cloth beetle." 
The writers believe that the losses brought about by cadelle activ- 
ity in cartoned foods has been greatly underestimated. Cadelle 
larvse have frequently been found in flours, breakfast foods, dried 
Fig. 3. — View in hold of grain ship, showing dunnage used to keep sacks of wheat 
from touching steel sides of ship. Such dunnage used over and over again becomes 
well infested by the cadelle, and with the assistance of the cadelle becomes also the 
hiding place for many associated grain pests 
fruits, pearl barley, etc., placed on the market in packaged form. 
A cadelle larva seldom pupates within such a package, but in seeking 
seclusion for transformation it eats a hole in the carton to effect its 
escape (fig. 1). It thus opens the carton to all the other chief pests 
