Ptinidae is a family of beetles in the superfamily Bostrichoidea. There are at least 220 genera and 2,200 described species in Ptinidae worldwide. The family includes spider beetles and deathwatch beetles.
There are three main groups in the superfamily Bostrichoidea: Bostrichidae, Anobiidae, and Ptinidae. These have undergone frequent changes in hierarchical classification since their inception. They have been treated as a single family, three independent families, the two families Bostrichidae and Anobiidae, or the two families Bostrichidae and Ptinidae. More recent literature treats these as the two families Bostrichidae and Ptinidae, with Anobiidae a subfamily of Ptinidae (Anobiinae).
Spider beetles are so named because they look like spiders. Some species have long legs, antennae that can seem like an additional pair of legs, and a body shape that may appear superficially like that of a spider.
Deathwatch beetles are named because of a clicking noise that two (and possibly more) species tend to make in the walls of houses and other buildings. This clicking noise is designed to communicate with potential mates, but has historically caused fear of impending death during times of plague and sickness.
|at least 220 genera|
The larvae of a number of Ptinidae species tend to bore into wood, earning them the name "woodworm" or "wood borer". Several species are pests, causing damage to wooden furniture, house structures, tobacco, and dried food products. The deathwatch beetles Xestobium rufovillosum, Hemicoelus carinatus, and Hemicoelus gibbicollis are economically significant pests, damaging flooring, joists, and other timber in housing.
The "furniture beetle", Anobium punctatum, is a species that is often found emerging from in-home wood furnishings. The "drugstore beetle", Stegobium paniceum, is known to infest a variety of stored materials, including bread, flour, cereal, prescription drugs, strychnine powder, packaged foods, and even Egyptian tombs.
The "Cigarette beetle," Lasioderma serricornea, is a widespread and destructive pest of harvested and manufactured tobacco. Damage and economic losses from Lasioderma serricornea infestations were estimated by the USDA to be 0.7% of the total warehoused tobacco commodity in 1971.
Anobiinae is a subfamily of death-watch beetles in the family Ptinidae, with at least 45 genera. It was formerly considered a member of the family Anobiidae, but its family name has since been changed to Ptinidae.The larvae of a number of species tend to bore into wood, earning them the name "woodworm" or "wood borer". A few species, such as the common furniture beetle, Anobium punctatum, are pests, causing damage to wooden furniture and house structures.Bostrichiformia
Bostrichiformia is an infraorder of polyphagan beetles.
It contains two superfamilies, Derodontoidea and Bostrichoidea, which includes the Dermestidae, Ptinidae, Bostrichidae and others.Bostrichoidea
Bostrichoidea is a superfamily of beetles. It is the type superfamily of the infraorder Bostrichiformia.
It includes the following subgroups:
Family Bostrichidae Latreille, 1802 - Horned Powder-post Beetles
Subfamily Bostrichinae Latreille, 1802
Subfamily Dinoderinae Thomson, 1863
Subfamily Dysidinae Lesne, 1921
Subfamily Euderiinae Lesne, 1934
Subfamily Lyctinae Billberg, 1820 - Powder-post Beetles
Subfamily Polycaoninae Lesne, 1896
Subfamily Psoinae Blanchard, 1851
Family Dermestidae Latreille, 1804 - Carpet Beetles
Subfamily Attageninae Laporte, 1840
Subfamily Dermestinae Latreille, 1804
Subfamily Megatominae Leach, 1815
Subfamily Orphilinae LeConte, 1861
Subfamily Thorictinae Agassiz, 1846
Subfamily Trinodinae Casey, 1900
Family Endecatomidae LeConte, 1861
Family Ptinidae Latreille, 1802 (formerly Anobiidae)
Subfamily Alvarenganiellinae Viana and Martínez, 1971
Subfamily Anobiinae Fleming, 1821 - Death-watch Beetles
Subfamily Dorcatominae Thomson, 1859
Subfamily Dryophilinae Gistel, 1848
Subfamily Ernobiinae Pic, 1912
Subfamily Eucradinae LeConte, 1861
Subfamily Mesocoelopodinae Mulsant and Rey, 1864
Subfamily Ptilininae Shuckard, 1839 - Spider Beetles
Subfamily Ptininae Latreille, 1802
Subfamily Xyletininae Gistel, 1848Caenocara
Caenocara is a genus of beetles in the family Ptinidae. Members of this genus are sometimes called puffball beetles.Common furniture beetle
The common furniture beetle or common house borer (Anobium punctatum) is a woodboring beetle. In the larval stage it bores in wood and feeds upon it. Adult Anobium punctatum measure 2.7–4.5 millimetres (0.11–0.18 in) in length. They have brown ellipsoidal bodies with a prothorax resembling a monk's cowl .Deathwatch beetle
The deathwatch beetle, Xestobium rufovillosum, is a woodboring beetle. The adult beetle is 7 millimetres (0.28 in) long, while the xylophagous larvae are up to 11 mm (0.43 in) long.
To attract mates, these woodborers create a tapping or ticking sound that can be heard in the rafters of old buildings on 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 deathwatch beetle 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 (Greek goddesses Atropos and Clotho were associated with death).
The larva is very soft, yet can bore its way through wood, which it is able to digest using a number of enzymes in its alimentary canal, provided that the wood has experienced prior fungal decay.Dorcatoma
Dorcatoma is a genus of beetles in the family Ptinidae. They are distributed in several regions of the world, excluding tropical areas. There are more than 70 species.Beetles of this genus live in dead wood, especially that which is softened and decomposed by fungi.Species include:
Dorcatominae is a subfamily of death-watch and spider beetles in the family Ptinidae. There are about 16 genera and at least 190 described species in Dorcatominae.The subfamily Dorcatominae, along with Anobiinae and several others, were formerly considered members of the family Anobiidae, the but family name has since been changed to Ptinidae.Drugstore beetle
The drugstore beetle (Stegobium paniceum), also known as the bread beetle or biscuit beetle, is a tiny, brown beetle that can be found infesting a wide variety of dried plant products, where it is among the most common non-weevils to be found. It is the only member of the monotypic genus Stegobium.
The drugstore beetle has a worldwide distribution though it is more common in warmer climates. It is similar in appearance to the cigarette beetle (Lasioderma serricorne), but is slightly larger (adults can be up to 3.5 mm in length). Additionally, drugstore beetles have antennae ending in 3-segmented clubs, while cigarette beetles have serrated antennae (notched like teeth of a saw). The drugstore beetle also has grooves running longitudinally along the elytra, whereas the cigarette beetle is smooth.Ernobius
Ernobius is a genus of beetles in the family Ptinidae. There are about 90 species. Most occur in North America, Europe, and North Africa.Holcobius
Holcobius is a genus of beetles in the family Ptinidae.Mirosternus
Mirosternus is a genus of beetles in the family Ptinidae. There are at least 70 described species in Mirosternus.Petalium
Petalium is a genus of beetles in the family Ptinidae.Ptilinus
Ptilinus is a genus of death-watch beetles in the family Ptinidae. It is native to the Palearctic (including Europe), the Near East, the Nearctic, the Neotropical and North Africa. There are at least nine described species in Ptilinus.Ptinus
Ptinus is a genus of beetles distributed throughout much of the world, including Africa, the Australian region, the Palearctic, the Near East, the Nearctic, and the Neotropic ecozone. It is a member of the subfamily Ptininae, the spider beetles.
About 24 species have been found associated with stored food products in various parts of the world. Both adults and larvae of which feed on grain, dried fruit, spices and other dried foodstuffs. The sub-species Ptinus tectus is considered a pest species in Museums and can damage stored objects and collections.Taxa include:
Ptinus fur – whitemarked spider beetle
Ptinus tectus – Australian spider beetleSpider beetle
Spider beetles make up the subfamily Ptininae, in the family Ptinidae. There are approximately 70 genera and 600 species in the subfamily, with about 12 genera and 70 species in North America north of Mexico.Spider beetles have round bodies with long, slender legs. Many species are flightless, either in females only or both sexes. They are generally 1–5 mm long, and reproduce at the rate of two to three generations per year. They are so named because of a resemblance to spiders. Some species have long legs, antennae that can seem like an additional pair of legs, and a body shape that may appear superficially like that of a spider.The larvae and the adults of most spider beetles are scavengers on dry plant or animal matter, but some species are known to be ant associates.The subfamily Ptininae, along with Anobiinae and several others, were formerly considered members of the family Anobiidae, the but family name has since been changed to Ptinidae.Xyletininae
Xyletininae is a subfamily of death-watch and spider beetles in the family Ptinidae. There are about 13 genera and at least 170 described species in Xyletininae.The subfamily Xyletininae, along with Anobiinae and several others, were formerly considered members of the family Anobiidae, the but family name has since been changed to Ptinidae.Xyletinini
Xyletinini is a tribe of death-watch and spider beetles in the family Ptinidae. There are at least 10 genera and 70 described species in Xyletinini.Xyletobius
Xyletobius is a genus of beetles in the family Ptinidae.