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WAREHOUSE GRAIN BEETLE - EGGS & LARVA WAREHOUSE GRAIN BEETLE - EGGS & LARVA

Photo Courtesy of UNIVAR Photo Courtesy of UNIVAR Photo Courtesy of UNIVAR Photo Courtesy of UNIVAR
WAREHOUSE GRAIN BEETLE-ADULT & LARVA WAREHOUSE GRAIN BEETLE - PUPA & ADULT WAREHOUSE GRAIN BEETLE-ADULT & LARVA WAREHOUSE GRAIN BEETLE - PUPA & ADULT
ON ICE CREAM CONE ON ICE CREAM CONE

Photo Courtesy of UNIVAR Photo Courtesy of UNIVAR Photo Courtesy of UNIVAR Photo Courtesy of UNIVAR

1.Antenna- short & clubbed 6.Thorax WAREHOUSE GRAIN BEETLE 1.Antenna- short & clubbed 6.Thorax WAREHOUSE GRAIN BEETLE
2.Eyes- compound 7.Petiole- none 2.Eyes- compound 7.Petiole- none
3.Head 8.Abdomen- oblong 4 8 3.Head 8.Abdomen- oblong 4 8
4.Legs- 6 9.Color- brownish black, yellow markings 4.Legs- 6 9.Color- brownish black, yellow markings
5.Wings- under elytra 10.Other- voracious feeder, good flyer 5.Wings- under elytra 10.Other- voracious feeder, good flyer

Life Cycle Life Cycle
The female lays 5-60 eggs, which hatch in about two weeks. The lar- The female lays 5-60 eggs, which hatch in about two weeks. The lar-
vae immediately start eating, males go through at least five molts and vae immediately start eating, males go through at least five molts and
females six over the larval period of five months. The larvae pupates 3 females six over the larval period of five months. The larvae pupates 3
in their larval skin for 11-17 days, and become adults, which start repro- 5 in their larval skin for 11-17 days, and become adults, which start repro- 5
ducing three days after emerging. ducing three days after emerging.
Photo Courtesy of UNIVAR Photo Courtesy of UNIVAR
WAREHOUSE GRAIN BEETLE Actual size 1/8” WAREHOUSE GRAIN BEETLE Actual size 1/8”

This beetle is a voracious feeder, infesting seeds, cereals, grains, spices, dog food, dead ani- This beetle is a voracious feeder, infesting seeds, cereals, grains, spices, dog food, dead ani-
mals, cocoa, cookies, candy, nuts, dried pasta, potato chips--a wide variety of organic products. mals, cocoa, cookies, candy, nuts, dried pasta, potato chips--a wide variety of organic products.
It is about 1/8th inch in size, and is brownish-black. It can be a serious problem in museums, It is about 1/8th inch in size, and is brownish-black. It can be a serious problem in museums,
and will even attack preserved insect collections. It does best inside warm buildings. and will even attack preserved insect collections. It does best inside warm buildings.

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