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Beetles

Beetles

Beetles are from the largest insect border. The most environments have been colonised and many serious agricultural pest species exist. Some beetles also do considerable damage to stored foods, building structures, fabrics and fibers.

Larder beetle:

Common in birds’ nests, found in poultry units, animal feed mills and domestic premises.

Up to 200 eggs per female is laid singly on larval food over a 6 month period. Hatches in a week. Egg to adult takes 2-3 months or longer.

A full grown larva bores in to a hard material (wood) to create pupation chamber. This causes serious stuctual damage to timber.

These beetles are a serious pest in an industrial and domestic kitchens usually associated with poor hygiene.
Most residual insecticides will be effective if applied thoroughly to structure concentrating on the treatment of cracks and crevices. All infested bird nests should be removed and destroyed.

 Variegated Carpet Beetle:

Common in bird nests, domestic premises, museums. Up to a hundred eggs are laid singly on a larval food of animal origin including woollen carpets, clothing, furs and museum specimen.

Larvae does the damages and are known as woolly bear. Adults are harmless.

Serious pest of museum specimens, clothing and carpets in domestic situation. Removal of old bird nests includes vacuuming cracks and crevices and using residual spray/dust on carpets usually enough to control infestation.

Thorax and wing cases are covered in coloured (white, pale yellow, brown and black) scales. Scales, producing irregular patches or extended “W” marks

 Biscuit Beetle:

Pest of food stores and domestic larders. Feeds on cereal products, spices and wide range of dried stored food. Can damage food by penetrating the packaging.

Up to 60 eggs can be laid singly by the female on/or near larval food. Larvae may bore holes through hard materials, because of this behaviour this may be confused with the furniture beetles (woodworm.)

To eradicate infestation destroy any infested materials, fumigate of bulk foods and use residual insecticides for structural treatments. Good hygiene can help the problem.

Saw-toothed grain beetle:

Significant grain pest but also on many other stored foods.

Female lays up to 400 eggs, 6-10 eggs per day on larval food, hatches in few days later into active free living larvae and feeds on cereals, grains and other food.
Most important grain pest but also on cereal products, nuts, dried fruit.

Also caused contamination on other food stuff.

Yellow meal worm beetle:

Omnivorous scavenger in bird nests, on droppings or dead birds and on general residues in attics and cellars. Its larvae are used as fishing bait. Up to 500 eggs laid by the female in batches on food material. Hatches in few weeks into larvae up to 30mm long, yellow and brown banded. Free living in cereal products bird nest detritus and general scavenger.

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