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''Ptinus fur'', the white marked spider beetle, is a species of spider beetle in the genus ''
Images of Ptinus fur femaleImages of Ptinus fur
fur Beetles described in 1758 Taxa named by Carl Linnaeus Agricultural pest insects Beetles of Europe {{Bostrichoidea-stub
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 Neotropical realm. It is a member of the subfamily Ptininae, the spider beetle ...
'' (family Ptinidae), with a nearly cosmopolitan distribution
In biogeography, cosmopolitan distribution is the term for the range of a taxon that extends across all or most of the world in appropriate habitats. Such a taxon, usually a species, is said to exhibit cosmopolitanism or cosmopolitism. The ext ...
.
Description
Adults are morphologically similar to other spider beetle species, notably the hairy spider beetle ('' Ptinus villiger''). It is red-brown with yellow hairs, and measures in length. The prothorax is densely covered with pale hairs, while the elytra bear some patches of white scales.
Distribution and Habitat
It is a pest of stored foods, with a worldwide distribution, where it may be identified by leaving webbed, granular materials on the stored products.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 Neotropical realm. It is a member of the subfamily Ptininae, the spider beetle ...
fur adults feed on dried and decaying animal and vegetable material.Chinery, M. 2012. Insects of Britain and Western Europe (Domino Guides), Revised Edition. London: Bloomsbury. pp 274. It has also been identified as a pest in museums, damaging stored collections.
It has been found in the nests of birds, notably the Sand Martin
The sand martin (''Riparia riparia''), also known as the bank swallow (in the Americas), collared sand martin, or common sand martin, is a migratory passerine bird in the swallow family. It has a wide range in summer, embracing practically the w ...
.
Life cycle
The optimum temperature for rapid development ofPtinus
''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 Neotropical realm. It is a member of the subfamily Ptininae, the spider beetle ...
fur is about 23 °C, at which temperature it completes its development in a mean period of 132 days. Larvae of P. fur normally moult three times at 23°Cm but some have an extra moult.
Well-defined diapause as mature larvae in cocoons occurs at low temperatures in some individuals of 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 Neotropical realm. It is a member of the subfamily Ptininae, the spider beetle ...
fur: at 23 °C this lasts about 220 days after normal larvae have pupated; at 20 °C the period lasts about 280 days.
Adult beetles live for several months.
References
External links
Images of Ptinus fur female
fur Beetles described in 1758 Taxa named by Carl Linnaeus Agricultural pest insects Beetles of Europe {{Bostrichoidea-stub