ColeopteraPtinidae – Death-watch and Spider Beetles

Petalium incisum

This record describes Petalium incisum (species). Recorded family: Ptinidae. Recorded order: Coleoptera.

Identification and Appearance

Petalium incisum - Petalium incisum
Contributed by Tim Moyer; Additional contributions by Mike Quinn , v belov

Pronotum anterior recurved carina distinctly raised, incised at middle

Classification

Kingdom
Animalia
Phylum
Arthropoda
Class
Insecta
Order
Coleoptera (Beetles)
Suborder
Polyphaga
Superfamily
Bostrichoidea
Family
Ptinidae (Death-watch and Spider Beetles)
Subfamily
Dorcatominae
Genus
Petalium

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-MO-TX)

Seasonal Activity

early Jul to mid-Sep in WI

Diet and Behavior

Diet: Hosts: Celastrus scandens, Rhus toxicodendron, Robinia pseudoacacia

Additional species information

Species notes from the sources

Etymology: Petalium incisum Ford 1973

About Primitive Winged Insects: the wider group

Order-level background for Coleoptera, the group containing Petalium incisum. 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.

Explore Coleoptera families and species →

Photos of Petalium incisum (5)

Petalium incisum - photo 1
Contributed by Tim Moyer; Additional contributions by Mike Quinn , v belov
Petalium incisum - photo 2
Contributed by Tim Moyer; Additional contributions by Mike Quinn , v belov
Petalium incisum - photo 3
Contributed by Tim Moyer; Additional contributions by Mike Quinn , v belov
Petalium incisum - photo 4
Contributed by Tim Moyer; Additional contributions by Mike Quinn , v belov
Petalium incisum - photo 5
Contributed by Tim Moyer; Additional contributions by Mike Quinn , v belov

Photo credits: Contributed by Tim Moyer; Additional contributions by Mike Quinn , v belov

Frequently Asked Questions About Petalium incisum

What is Petalium incisum?

Petalium incisum is a species in the family Ptinidae, within the order Coleoptera.

How big is Petalium incisum?

2.1–2.2 mm

How do you identify Petalium incisum?

Pronotum anterior recurved carina distinctly raised, incised at middle

Where is Petalium incisum found?

Range: e. US (NY-FL to WI-MO-TX)

What does Petalium incisum eat?

The diet of the Petalium incisum includes Hosts: Celastrus scandens, Rhus toxicodendron, Robinia pseudoacacia.

When is Petalium incisum active?

Petalium incisum: seasonal activity - early Jul to mid-Sep in WI.

How we use and review source data. Source count does not imply independent verification.

Photo credits: Contributed by Tim Moyer; Additional contributions by Mike Quinn , v belov. Contributors retain copyright over their individual contributions.