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Shiny spider beetle

Gibbium psylloides


  • Adult – 1/32"-1/8" long.  They are shiny red-brown to black. The body is hairless, and lacks the general spider beetles characteristic restriction at the waist.


  • Females lay up to 120 eggs either singly or in batches during early summer. The eggs hatch within 16 days, and remain in the larval stage for up to 6 weeks.
  • Adults emerge after 20-30 days of the pupal stage and may live for up to 12 months.
  • At the optimum temperature for development (33°C) it takes about 45 days for the life cycle to be complete.


  • Shiny spider beetles are tolerant of cool conditions and can stay alive for long periods without food.
  • If disturbed, they will act as if dead.

Controlling Insects that attack Food Products