Biscuit Beetle

Also known as Stegobium paniceum

These biscuit beetle pests will make their home in stored products including vegetables, spices, cereals, drugs and even dried flowers. The beetles typically are found in the kitchen cupboards or pantry. For biscuit beetle pest control Apex pest control offers treatment to remove these bugs.

biscuit beetle uk

Biscuit Beetle UK


  • Adult beetle length is 2mm – 3mm
  • Colour – reddish brown
  • Shape – oval
  • Covering – dense covering of yellowish hairs

The head is hidden under the hood-like prothorax. Easily mistaken for the common furniture beetle, or the cigarette beetle. The larvae are active initially, but become fat, sluggish and eventually incapable of movement. A fully-grown larva is about 5mm long.


Eggs are laid individually in foodstuff. Each female produces about 100 eggs. First stage larvae are active and readily crawl through small openings, thereby contaminating packaged foodstuffs. Once a food source has been located, the larva becomes less mobile with each moult.

After 4 larval moults, the larva constructs a small round cell from food particles and saliva, in which to pupate. Adults bite their way out of the cocoon and wander in search of a mate, often a considerable distance from the larval development site. In common with other insects, development times are influenced by temperature, relative humidity, moisture content, quantity and quality of food. The following figures are therefore only a guide.

Egg8 – 37
Larvae5 – 150
Pupa9 – 18
Adult in cocoon7 – 12*
*non-feeding42 – 56

The complete life cycle takes between 12-33 weeks.

The optimum temperature range is 25-28°C; development ceases below 17°C.




These beetles will attack a wide range of stored products including dried vegetables, spices, chocolate, cereals, drugs and even dried flowers.

They are commonly found in association with birds’ nests.

The adult beetle does not feed but will fly from the original source of infestation and will lay its eggs in other commodities.

They are related to the common furniture beetle and, as one might expect, are capable of chewing into fairly hard materials. An infestation might therefore spread into the fabric of a building, behind polystyrene tiles etc.

Biscuit Beetle Control

Controlling an infestation of these beetles should start with identifying the source of the infestation and the extent of product contamination.

Any infested foodstuffs should be destroyed and the infested areas of the building, shelving, cracks and crevices should be treated using a residual insecticide.

Apex pest control offers local pest control experts to deal with bugs and beetle. Call us for more information on 0114 3491098

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