FLIES AND OTHER HOUSEHOLD INSECTS 



45 



The cadelle^ is another inhabitant of grain bins. The beetle is 

 rather stout, shining, dark brown and about ^ of an inch long. 

 The peculiar grub or larva, over an inch long, is easily recognized 

 by its flattened appearance and the dark brown plates just behind 

 the head and at the opposite extremity of the body. This species, 



Fig. 29 Cadelle, beetle and larva, from above, enlarged. (Original) 



according to Chittenden is predaceous as well as herbivorous. The 

 grub has a faculty for turning up in unexpected places, as for 

 example in milk which had evidently beeri adulterated with some 

 farinaceous material. It has been found in white hellebore and 

 even in granulated sugar. 



The drug store beetle^ is a rather stout, light brown beetle about 

 }i of an inch long, which attacks a large variety of substances. It 

 occurs in mills, granaries and warehouses, living upon flour, meal, 

 breakfast foods, condiments, roots and herbs and animal sub- 



Fig. 30 Drug store beetle, seen from above and the side, enlarged. (Original) 



stances. It has even been known to colonize itself in a human 

 skeleton which had been dried with the ligaments left on, and has 

 been recorded as perforating tinfoil and sheet lead. Only two 



^Tenebrioides m. auritanicus Linn. 

 ^Sitodrepa panicea Linn. 



