Insect

Carpet Beetle

The carpet beetle undergoes complete metamorphosis, with eggs laid on carpets and fabrics hatching in 10 days to 1 month depending on environmental conditions. Larvae grow to 5 mm, pupate seasonally, and adults are 2–3 mm long with orange and black speckles. Larvae prefer undisturbed fabrics, while adults seek light and nectar. Signs of infestation include larvae hidden in carpets and adults seen flying towards light sources. This species is found globally in domestic, commercial, and museum environments.

Facts

Name: Carpet Beetle, Anthrenus verbasci
Life cycle: Complete metamorphosis
Egg: Laid singularly on carpet, clothing, fur and museum material. Hatch in 10 days to 1 month depending on temperature and humidity.
Larvae: Grow to 5 mm and typically undergo 5 moults (more if food is abundant), taking several months to reach pupation.
Pupae: Usually pupate in spring or under favourable conditions, inside the final larval skin. Development takes around 10 days.
Adult: Adults seek light and flower nectar. After mating, females search for suitable materials to lay eggs. In warmer climates, adults may emerge year-round.
Description:
Larvae are banded and covered in short bristles. Adults are 2–3 mm long, speckled orange and black, and capable of flight.
Habitat:

Larvae are negatively phototaxic and live within their food sources, such as wool, silk, fur, and feathers. Adults are positively phototaxic and may fly outdoors in search of nectar. Global distribution includes temperate and tropical zones.

Signs of infestation

Larvae infest carpets and fabrics that are undisturbed or compressed, often behind or beneath furniture.
Adults may be seen wandering on carpets or flying towards light sources.
Damage includes irregular holes and shed larval skins.

References

The British Pest Management Manual. Section 5, pg 101.
‘Pest Animals in Buildings, a world review’. Norman Hickin pg 127.
Lab notes, Tarakan International.

Carpet Beetle

Facts

Signs of infestation

Products

Capabilities