Death watch beetle  (Xestobium rufovillosum)

Death watch beetle

Facts

Kingdom Animalia
Phylum Arthropoda
Class Insecta
Order Coleoptera
Family Anobiidae
Genus Xestobium (1)
Size Size: 5 - 9 mm (2)

Status

Not threatened (1).

Description

The larvae of this common beetle are notorious pests of furniture and structural timbers in buildings (3). The adults have cylindrical bodies and small heads (2). The common name refers to the repeated ticking sound produced by the adults as they bang their heads against the wood, possibly to attract a mate. When heard at night, this eerie mating call was once thought to count down to the time of death (4).

Range

Common and widespread in southern England (1). Less common as a pest species in the north of England (1).

Habitat

Occurs as a pest of wood indoors or in dead wood of very old trees outside (1).

Biology

Adults may be found on flowers during the spring. In many species belonging to this family of beetles (Anobiidae), the gut contains microorganisms that help the beetles to break down the cellulose found in wood (2). The adult females lay eggs in crevices on the wood, and the larvae tunnel in after hatching (5). The presence of the larvae in wood can go unnoticed until the adults emerge, leaving distinctive holes at the surface. These exit holes measure around 3-4 mm in diameter (3).

Threats

This pest species is not threatened.

Conservation

Conservation action is not required for this species.

Further Information

For more on invertebrates and their conservation see Buglife- the invertebrate conservation trust:
http://www.buglife.org.uk

Authentication

This information is awaiting authentication by a species expert, and will be updated as soon as possible. If you are able to help please contact:
arkive@wildscreen.org.uk

Larvae: stage in an animal’s lifecycle after it hatches from the egg. Larvae are typically very different in appearance to adults; they are able to feed and move around but usually are unable to reproduce.

References

  1. National Biodiversity Network Species Dictionary (January 2004):
    http://www.nhm.ac.uk/nbn
  2. Harde, K. W. (2000) Beetles. Silverdale Books, Leicester.
  3. Kendall Bioresearch. (January 2004):
    http://www.kendall-bioresearch.co.uk/woodworm.htm
  4. Buczaki, S. (2002) Fauna Britannica. Hamlyn, London.
  5. Chinery. M. (1993) Insects of Britain and Northern Europe. Harper Collins Publishers Ltd, London.