Variegated Carpet Beetle – anthrenus verbasci

Carpet Beatle

Adult size (approx.): 0.1cm-0.4cm

Habitat

The Adult Beetle is not the culprit for the damage in this case.  They feed on pollen and nectar of flower heads during the Summer.  The larvae need a high animal diet and occur naturally in dried Birds nests.  They appear in domestic households where they feed on carpets, clothing and animal fur and skin.

Biology

 

Egg, Larvae – Pupae - Adult
Egg: up to 100 per Female, laid singly on larval food
Larvae: approx 5mm covered in bristles with a cream colouring.  Known as the “Woolly Bear”
Pupae: inside their last larval skin among larval food normally occurring in the Spring
Adult: orange, black and white colouring feeding on nectar and pollen

 

Importance

If untreated, can cause damage to carpets, clothing, animal fur and skins, leather and mops and brushes.  They can also cause damage in museum areas to stuffed animals and Insect specimens in collections.

Control

If the material in question is highly damaged, it should be removed and destroyed.  The infested areas should be cleaned thoroughly with a small vacuum nozzle especially in cracks and crevices to remove the larvae.  A residual spray throughout can be undertaken, paying particular attention to the infected areas.  A dust formulation can also be used but can easily be removed by vacuuming.


Larder Beetle – dermestes lardarius

Larder Beatle

Adult size (approx.): 0.7-0.9cm

Habitat

This Beetle is common in Birds’ nests and occur naturally here, but can also be found in Poultry housing, animal feeding mills ad domestic premises.  Both the larvae and the adult feed on animal protein.  They have a minimum breeding temperature of 17 degrees centigrade.

Biology

 

Egg – Larvae – Pupae - Adult
Egg: up to 200 can be laid by the Female.  They are laid singly on larval food over a 6 month period
Larvae: a dark brown colouring with distinctive bristles approx 14mm long.  Develop in approx 1-2 months.  Fully grown Larvae bore into hard materials such as wood to create a pupation chamber
Pupae: cream coloured in a chamber, develop in approx 2 weeks
Adult: an active flier, living approx 6 months.  Black colouring with a pale buff on the elytra (wing case)

 

Importance

The Larder Beetle is a serious pest in industrial and domestic kitchens, particularly around areas in which food is stored i.e. cupboards and fridges.  This is caused normally by poor hygiene allowing them to feed successfully on food scraps.  When fully grown, the Adult Beetle is attracted at night to illuminated windows, creating new infestations in high rise buildings such as flats or canteens on upper floors.  They can also be a nuisance in Poultry houses and Piggeries.  This is normally by the Larval stage as they bore into the timber structure and insulation.  This can create weakness in the structure and poor insulation.

Control

In domestic and industrial kitchens, a cleaning regime should be introduced with accompaniment  of a residual spray treatment (dust applications can also take place).  Depending on the size of infestation, this may take some time.  If pupation has occurred nearby, a subsequent re-treatment may be necessary.  Birds nest should be removed if found.  Infested animal units can be difficult to control as Larvae and Adults may have penetrated insulated areas.  It is best to remove all insulation and destroy.  It is important to isolate the Insects breeding area from areas where insulation is.  We can proof areas to prevent further damage and then replace the insulation.  A residual barrier can then be placed around the perimeter.  This should take place after all cleaning has taken place and the unit is empty.


 

Common Furniture Beetle, Woodworm – anobium punctatum

Furniture Beatle

Adult size (approx.): 0.3-0.5cm

Habitat

This is a timber pest of temperate zones and common in the UK both indoors and outdoors.  The Larvae feed by tunnelling through wood causing damage to structural timbers and furniture.  They also attack trees and fence posts externally.

Biology

 

Egg – Larvae – Pupae - Adult
Egg: approx 30 per Female laid in groups of 2-3 at a time in grains of wood.  They hatch in approx 2-4 weeks
Larvae: whitish in colour, not normally seen as they bore through timber creating tunnels as they feed, usually in sapwood
Pupae: close to wood surface, Adults emerge by biting exit hole
Adult: dark brown in colour, approx 3-5mm in length, actively flying in May-June

 

Importance

A serious pest if not dealt with.  Polished woods are not normally attacked but even the best furniture has exposed joints in and around its frame.  It is common for the wild populations outside of the home to venture indoors during the spring, moving from tree trunks and fence posts to roof timbers.  The wooden windows and door frames of older buildings are also prone to attack and after many years of infestation even substantial roofing timbers may become seriously weakened.

Control

Small infested articles can be fumigated in a chamber.  These will then need a residual treatment for long term protection.  Major treatments may need to be carried out by wood protection companies as many will need certification of guarantees of 10-20 years.


Other Beetles we deal with include:
  • Powder Post Beetle
  • Death Watch Beetle
  • Wharf Borer
  • Biscuit Beetle
  • Khapra Beetle
  • Strawberry Seed Beetle

Areas Covered for Beetle Control

 

Carpet Beetle Control Essex, London & Kent

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    Primary Contacts


    Main: 0800 142 2476

    Head Office, Bridge Farm
    Woodhill Road 
    Sandon
    Essex,CM2 7SG.

     

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