Ptinus bimaculatus
This record describes Ptinus bimaculatus (species). Recorded family: Ptinidae. Recorded order: Coleoptera.
Identification and Appearance
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). Det. E. G. Riley, 2010
Classification
- Kingdom
- Animalia
- Phylum
- Arthropoda
- Class
- Insecta
- Order
- Coleoptera (Beetles)
- Suborder
- Polyphaga
- Superfamily
- Bostrichoidea
- Family
- Ptinidae (Death-watch and Spider Beetles)
- Subfamily
- Ptininae
- Tribe
- Ptinini
- Genus
- Ptinus
Imported taxonomy record. Source availability varies; see the source references and editorial policy below.
Habitat and Range
Geographic Range
e. US (NY-FL to WI-KS-TX) - Map
Additional species information
Species notes from the sources
Etymology: Ptinus bimaculatus Melsheimer 1846
About Primitive Winged Insects: the wider group
Order-level background for Coleoptera, the group containing Ptinus bimaculatus. Species-specific details appear above.
Group overview
Coleoptera is the largest order of insects with over 400,000 described species, representing ~25% of all known animal species and ~40% of all insects. In the U.S. alone, nearly 30,000 beetle species have been identified.
Ecological role of the group
Beetles are prominent decomposers, especially in forests, breaking down dead wood and recycling nutrients. As predators, they reduce populations of pest insects. Many species are also important pollinators of flowering plants.
Economic and practical significance of the group
Beetles have major economic significance: leaf beetles (Chrysomelidae) and weevils (Curculionoidea) are among the most destructive agricultural pests globally, costing billions annually, while predatory species like ladybugs provide natural pest control.
Recorded sources for this group: Britannica, Smithsonian, NCSU Entomology. Imported estimates may describe particular regions or reporting periods.
Photos of Ptinus bimaculatus (5)
Photo credits: Contributed by Boris Büche; Additional contributions by Mike Quinn , v belov
Frequently Asked Questions About Ptinus bimaculatus
What is Ptinus bimaculatus?
Ptinus bimaculatus is a species in the family Ptinidae, within the order Coleoptera.
How big is Ptinus bimaculatus?
2.1–2.5 mm
How do you identify Ptinus bimaculatus?
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). Det. E. G. Riley, 2010
Where is Ptinus bimaculatus found?
Range: e. US (NY-FL to WI-KS-TX) - Map