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Ptinus fur

Superregnum: Eukaryota
Cladus: Unikonta
Cladus: Opisthokonta
Cladus: Holozoa
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Cladus: Protostomia
Cladus: Ecdysozoa
Cladus: Panarthropoda
Phylum: Arthropoda
Subphylum: Hexapoda
Classis: Insecta
Cladus: Dicondylia
Subclassis: Pterygota
Cladus: Metapterygota
Infraclassis: Neoptera
Cladus: Eumetabola
Cladus: Endopterygota
Superordo: Coleopterida
Ordo: Coleoptera
Subordo: Polyphaga
Infraordo: Bostrichiformia
Superfamilia: Bostrichoidea

Familia: Ptinidae
Subfamilia: Ptininae
Genus: Ptinus
Species: Ptinus fur

Ptinus fur (Linnaeus, 1758)

Cerambyx fur Linnaeus, 1758

Primary references

Linnaeus, C. 1758. Systema Naturae per regna tria naturæ, secundum classes, ordines, genera, species, cum characteribus, differentiis, synonymis, locis, Tomus I. Editio decima, reformata. Holmiæ: impensis direct. Laurentii Salvii. i–ii, 1–824 pp DOI: 10.5962/bhl.title.542: 393–394. Reference page.


Ptinus fur Taxon details on Fauna Europaea
Zoological Institute of Russian Academy of Sciences: K.V. Makarov. Ptinus fur L. (Ptinidae) - atlas of beetles of Russia
ZooBank: B3AD08C8-0093-4957-8FDD-83B012E80BE6

Vernacular names
Deutsch: Kräuterdieb
Nederlands: Diefje
polski: Pustosz kradnik
Tiếng Việt: Ptinus fur

Ptinus fur, the whitemarked spider beetle, is a species of spider beetle in the genus Ptinus (family Ptinidae), with a nearly cosmopolitan distribution.[1]


Adults are morphologically similar to other spider beetle species, notably the hairy spider beetle (Ptinus villiger).[2] It is red-brown in colour with yellow hairs, and measures 2.0–4.3 millimetres (0.08–0.17 in) in length. The prothorax is densely covered with pale hairs, while the elytra bear some patches of white scales.[1]
Distribution and Habitat

It is a pest of stored foods,[2] with a worldwide distribution, where it may be identified through leaving webbed, granular materials on the stored products.[2] Ptinus fur adults feed on dried and decaying animal and vegetable material.[2][3] It has also been identified as a pest in museums, damaging stored collections.[3]

It has been found in the nests of birds, notably the Sand Martin.[4]
Life cycle

The optimum temperature for rapid development of Ptinus fur is about 23 °C, at which temperature it completes its development in a mean period of 132 days.[5] Larvae of P. fur normally moult three times at 23°Cm but some have an extra moult.[5]

Well defined diapause as mature larvae in cocoons occurs at low temperatures in some individuals of Ptinus fur: at 23 °C this lasts about 220 days after normal larvae have pupated; at 20 °C the period lasts about 280 days.[5]

The adult beetles live for several months.[5]

"Insect Fact Sheet 12. Spider Beetles & Biscuit Beetles" (PDF). Salford City Council. Retrieved November 5, 2010.
"Whitemarked spider beetle Ptinus fur (L.)". Canada Grain Commission, Government of Canada. 2013. Retrieved 2017-01-22.
Chinery, M. 2012. Insects of Britain and Western Europe (Domino Guides), Revised Edition. London: Bloomsbury. pp 274.
Kirstofik, J.; Sustek, Z. & Gajdos, P. (1994). "Arthropods in the nests of the Sand Martin (Riparia riparia Linnaeus, 1758) in South Slovakia". Biologia Bratislava.
Howe, R. W. & Burges, H. D. (1951). "Studies on Beetles of the Family Ptinidae.* VI.—The Biology of Ptinus fur (L.) and P. sexpunctatus Panzer". Bulletin of Entomological Research. 42 (3): 499. doi:10.1017/S0007485300028893.

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