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For Insects, Spiders & Their Kin
For the United States & Canada
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Species Ptinus bimaculatus

051412Beetle1 - Ptinus bimaculatus Odd Beetle - Ptinus bimaculatus Odd Beetle - Ptinus bimaculatus Ptinus bimaculatus Melsheimer - Ptinus bimaculatus Ptinus - Ptinus bimaculatus Black and red spider beetle - Ptinus bimaculatus Black and red spider beetle - Ptinus bimaculatus tiny beetle - Fungus Weevil? - Ptinus bimaculatus
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Coleoptera (Beetles)
Suborder Polyphaga (Water, Rove, Scarab, Long-horned, Leaf and Snout Beetles)
Superfamily Bostrichoidea (Carpet, Powder-post and Death-watch Beetles)
Family Ptinidae (Death-watch and Spider Beetles)
Subfamily Ptininae (Spider Beetles)
Tribe Ptinini
Genus Ptinus
No Taxon (subgenus Gynopterus)
Species bimaculatus (Ptinus bimaculatus)
Explanation of Names
Ptinus bimaculatus Melsheimer 1846
2.1–2.5 mm(1)
Body relatively stout, with shoulders prominent. Color dark, with shoulders and apical part of elytra brown sometimes. Each elytron with two transverse bands of white hairs, the anterior one undulate (diagnostic).
e. US (NY-FL to WI-KS-TX)(1)
Works Cited
1.Death-watch and spider beetles of Wisconsin—Coleoptera: Ptinidae
Arango, R.A. and D.K. Young. 2012. General Technical Report FPL-GTR-209. Madison, WI: U.S. Department of Agriculture, Forest Service, Forest Products Laboratory.