Anthrenus flavipes

LeConte, 1854

furniture carpet beetle

Anthrenus flavipes is a small dermestid known as the furniture carpet beetle. are 2–3.5 mm long, black with variable white and yellow mottling, and have rounded or oval body that distinguish them from related carpet beetles. The has a distribution and is a significant pest of household materials, particularly upholstered furniture, carpets, and textiles. Larvae are responsible for damage, feeding on keratin-containing materials including wool, hair, feathers, and silk.

Anthrenus flavipes flavipes LeConte, 1854 by URSchmidt. Used under a CC BY-SA 4.0 license.

Anthrenus flavipes larva adult by Clemson University - USDA Cooperative Extension Slide Series, Bugwood.org. Used under a CC BY 3.0 license.

Anthrenus flavipes flavipes (LeConte, 1854) (11254937336) by Udo Schmidt from Deutschland. Used under a CC BY-SA 2.0 license.

Pronunciation

How to pronounce Anthrenus flavipes: //ænˈθriːnəs ˈfleɪvɪˌpiːz//

These audio files are automatically generated. While they are not always 100% accurate, they are a good starting point.

Identification

distinguished from other carpet beetles by rounded or oval body (other Anthrenus have longer, narrower scales). Larvae distinguished from common carpet beetle (Anthrenus scrophulariae) by the supra-anal organ—a bundle of vibrating hairs on the end above the . The vibration of this organ is an antipredator visible under magnification.

Images

Habitat

Household environments, particularly associated with upholstered furniture, carpets, and stored textiles. In nature, inhabits nests of birds, rodents, insects, and spiders. More common in warm regions but can inhabit heated buildings in cooler areas.

Distribution

distribution, occurring throughout the world. Most active in warmer climates. Present in North America, Oceania, and parts of Europe.

Seasonality

most active in warmer months. Adult lifespan 30–60 days.

Diet

feed on pollen and nectar, often from plants of the parsley . Larvae digest keratin and feed on hair, fur, horns, silk, wool, bristles, feathers, skin, bone, tortoise shell, and other animal tissues. Also attacks plant-based and synthetic materials integrated with animal fibers or stained with blood, , or animal-derived oils. Larvae have been observed feeding on mold, dry cheese, casein, wood, and cardboard.

Life Cycle

Female lays up to 100 white . Eggs hatch in 1–3 weeks. Larva progresses through 6–30 instars over 2–3 months. Larva pupates for 2–3 weeks. lifespan 30–60 days.

Behavior

Females exhibit a characteristic headstand posture when releasing . Calling ( release) begins after light onset, peaks 1–2 hours later, and ceases after 4 hours under 16:8 . The sex pheromone has been identified as (Z)-3-decenoic acid. Larval supra-anal organ vibrates constantly as an antipredator against such as pseudoscorpions (Chelifer sp.) and Laelius pedatus.

Ecological Role

Scavenger of animal materials in natural settings; in human environments, acts as a pest of stored products and household materials. may function as of some flowers in spring.

Human Relevance

Significant pest of upholstered furniture, carpets, fabrics (including cotton, linen, rayon, and jute), and museum collections. Attacks biological specimens such as dried insects and taxidermy. Damages leather book bindings and parchment in libraries and archives. Larval setae can cause irritation or trigger allergic reactions including rhinitis, asthma, and contact dermatitis in sensitive individuals. Managed through , vacuuming, steam cleaning, cold storage of furs, freezing of specimens, and application; mothballs are ineffective.

Similar Taxa

Anthrenus scrophulariaeCommon carpet beetle; larvae distinguished by absence of constantly vibrating supra-anal organ
Anthrenus verbasciVaried carpet beetle; have longer, narrower body compared to rounded/oval scales of A. flavipes

Misconceptions

Mothballs () are ineffective for control; larvae have been observed eating the substance. crystals (paradichlorobenzene) can be effective at high concentrations but are potentially carcinogenic.

More Details

Oviposition preferences

Laboratory studies show females prefer crude sheep wool for -laying (averaging 18.4 eggs), with human hair least preferred (2.4 eggs). No significant differences in egg numbers between goat hair, bird feathers, and camel hair.

Laboratory rearing conditions

Studies conducted at 30±3°C, 50±5% RH, with 1L:23D . Larval food affects : females reared on crude sheep wool produced 45.0 on average, while those reared on natural silk produced 17.2 eggs.