Deathwatch beetle

Death watch beetle
Scientific classification
Kingdom:	Animalia
Phylum:	Arthropoda
Class:	Insecta
Order:	Coleoptera
Family:	Anobiidae
Subfamily:	Ernobiinae
Genus:	Xestobium
Species:	X. rufovillosum
Binomial name
Xestobium rufovillosum De Geer, 1774

The death watch beetle (Xestobium rufovillosum) is a woodboring beetle, namely a beetle whose larvae are xylophagous. The adult is approximately 7 mm long. The larva can be up to 11 mm long.

To attract mates, these woodborers create a tapping or ticking sound that can be heard in old building rafters during quiet summer nights. They are therefore associated with quiet, sleepless nights and are named for the vigil (watch) kept beside the dying or dead, and by extension the superstitious have seen the death watch as an omen of impending death.

The term "death watch" has been applied to a variety of other ticking insects including Anobium striatum, some of the so-called booklice of the family Psocidae, and the appropriately named Atropos divinatoria and Clothilla pulsatoria.

In 1787, antiquarian Francis Grose included the death watch beetle in his three-page inventory of contemporary omens of death .

The death watch beetle appears in a nativity song in which the innkeeper complains repeatedly that "there's death watch beetle in the roof."

In the story "The Tell-Tale Heart" by Edgar Allan Poe, the death watch beetle is mentioned simply as "deathwatches" The narrator hears it tapping in the walls while he watches his victim in his bedchamber.

In the George Orwell novel A Clergyman's Daughter the death watch beetle is mentioned as the reason for the church's sagging roof: "...beside the Church Expenses box two fragments of riddled beam explained mutely that this was due to that mortal foe of Christendom, the death-watch beetle."

In addition, the death watch beetle has made a further literary appearance in Julian Barnes' A History of the World in 10½ Chapters. It features in the opening chapter, set aboard Noah's Ark, and is said that 'all [it] could think about was sex', the noise of which almost led to its extinction.

It also appeared in Ian Fleming's Thunderball and in Ray Bradbury's Something Wicked This Way Comes. In addition, it is featured in Alice Hoffman's novel "Practical Magic" as well as in its film adaptation.