ColeopteraPtinidae – Death-watch and Spider Beetles

Oligomerus sericans

This record describes Oligomerus sericans (species). Recorded family: Ptinidae. Recorded order: Coleoptera.

Identification and Appearance

Oligomerus sericans - Oligomerus sericans
Contributed by Brad Barnd; Additional contributions by Boris Bueche , v belov , mfdigiro

Front coxae separated, 10 antennomeres

Identification notes

Front coxae separated, 10 antennomeres

Classification

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

Imported taxonomy record. Source availability varies; see the source references and editorial policy below.

Habitat and Range

Geographic Range

ne. NA (NS-ON-MN to VA-KY) ( 3 ) ( 4 )

Seasonal Activity

mid-Jun to mid-Aug in WI

Diet and Behavior

Diet: hosts: English walnut, chestnut, white oak ( 4 )

About Primitive Winged Insects: the wider group

Order-level background for Coleoptera, the group containing Oligomerus sericans. 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 Oligomerus sericans (5)

Oligomerus sericans - photo 1
Contributed by Brad Barnd; Additional contributions by Boris Bueche , v belov , mfdigiro
Oligomerus sericans - photo 2
Contributed by Brad Barnd; Additional contributions by Boris Bueche , v belov , mfdigiro
Oligomerus sericans - photo 3
Contributed by Brad Barnd; Additional contributions by Boris Bueche , v belov , mfdigiro
Oligomerus sericans - photo 4
Contributed by Brad Barnd; Additional contributions by Boris Bueche , v belov , mfdigiro
Oligomerus sericans - photo 5
Contributed by Brad Barnd; Additional contributions by Boris Bueche , v belov , mfdigiro

Photo credits: Contributed by Brad Barnd; Additional contributions by Boris Bueche , v belov , mfdigiro

Frequently Asked Questions About Oligomerus sericans

What is Oligomerus sericans?

Oligomerus sericans is a species in the family Ptinidae, within the order Coleoptera.

How big is Oligomerus sericans?

3.3–5.1 mm

How do you identify Oligomerus sericans?

Front coxae separated, 10 antennomeres

Where is Oligomerus sericans found?

Range: ne. NA (NS-ON-MN to VA-KY) ( 3 ) ( 4 )

What does Oligomerus sericans eat?

The diet of the Oligomerus sericans includes hosts: English walnut, chestnut, white oak ( 4 ).

When is Oligomerus sericans active?

Oligomerus sericans: seasonal activity - mid-Jun to mid-Aug in WI.

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

Photo credits: Contributed by Brad Barnd; Additional contributions by Boris Bueche , v belov , mfdigiro. Contributors retain copyright over their individual contributions.