Dermestes lardarius L.
Secondary pest: Grain feeder and scavenger
- Adults are 7 to 9 mm long and covered with dense hairs.
- Pattern on the elytra is distinctive: a wavy pale buff band with 3 black spots across the top half of the elytra.
- Adult's underside is covered in grey hairs.
- Larvae are yellow brown and cylindrical, covered with dense hairs.
- Larvae reach a length of 20 mm at maturity.
- Other species of Dermestidae may be morphologically similar but the pattern on the elytra is distinctive
- Feeds on feathers, skins, hair, ham, bacon, dried and processed meats, decayed meat, cheese, wool
- Feeds on museum specimens, dried insects, stuffed birds
- Is a scavenger on dead insects/animals in stored grain
- May feed on vegetable products with high protein
Signs of infestation
- Presence of cast skins
- Holes bored by larvae
- Larder beetle causes damage to skins, hides and other materials by burrowing into them
- Infested commodities are contaminated with cast skins, faeces and insect bodies
- Mature larvae are able to bore into wood or plaster, causing weakening of structures
How to control
- Is found worldwide
- Is widely distributed in Canada
- Is frequently found in granaries, grain elevators, warehouses and dwellings
- May be serious pests in the poultry industry
- Is a common household pest
- Adults are attracted to lights and fly readily.
- Females lay eggs singly or in batches amongst the foodstuff.
- Larvae move actively through the food source.
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