Minimum Life Cycle: 3 to 14 months.
Eggs - About 1,000 per female over several months.
Larvae - Found in moth webbing. At pupation, bore into wood.
Adults - Long lived, often longer than one year.
Cadelle (Tenebroides mauritanicus). The cadelle is a beetle that is not common in stored grain. Since the beetle's life cycle extents to nearly a year, it is more common in old grain bins and flour mills where they are destructive to sifting equipment. The larvae and adults are large and can go without food for 52 days (adults) to 120 days (larvae) (Figure 12).
(Slide and top caption courtesy of Degesch America, Inc.)