ColeopteraDytiscidae – Predaceous Diving Beetles

Oreodytes scitulus

This record describes Oreodytes scitulus (species). Recorded family: Dytiscidae. Recorded order: Coleoptera.

Identification and Appearance

Oreodytes scitulus - Oreodytes scitulus
Contributed by Tim Loh

Epipleuron does not meet the humeral angle between pronotum and elytron (visible in the lateral view). Distinctive colour pattern on pronotum and elytra: with anterior and posterior black markings on the pronotum that are joined/contiguous with one another; each elytron with 8 stripes, outer (sublateral) ones distinctly fused to form blotches.

Classification

Kingdom
Animalia
Phylum
Arthropoda
Class
Insecta
Order
Coleoptera (Beetles)
Suborder
Adephaga
Family
Dytiscidae (Predaceous Diving Beetles)
Subfamily
Hydroporinae
Tribe
Hydroporini
Genus
Oreodytes

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

Habitat and Range

Habitat

in streams and rivers and wave-washed margins of lakes

Geographic Range

One of the few more widespread species- transcontinental in Canada, in the west, range extends south to California and New Mexico, also in the northeastern US.

Additional species information

Species notes from the sources

Etymology: Oreodytes scitulus (LeConte 1855)

About Primitive Winged Insects: the wider group

Order-level background for Coleoptera, the group containing Oreodytes scitulus. 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 Oreodytes scitulus (5)

Oreodytes scitulus - photo 1
Contributed by Tim Loh
Oreodytes scitulus - photo 2
Contributed by Tim Loh
Oreodytes scitulus - photo 3
Contributed by Tim Loh
Oreodytes scitulus - photo 4
Contributed by Tim Loh
Oreodytes scitulus - photo 5
Contributed by Tim Loh

Photo credits: Contributed by Tim Loh

Frequently Asked Questions About Oreodytes scitulus

What is Oreodytes scitulus?

Oreodytes scitulus is a species in the family Dytiscidae, within the order Coleoptera.

How big is Oreodytes scitulus?

3.2-4 mm

How do you identify Oreodytes scitulus?

Epipleuron does not meet the humeral angle between pronotum and elytron (visible in the lateral view). Distinctive colour pattern on pronotum and elytra: with anterior and posterior black markings on the pronotum that are joined/contiguous with one another; each elytron with 8 stripes, outer (sublateral) ones distinctly fused to form blotches.

Where is Oreodytes scitulus found?
FeatureDetails
Habitatin streams and rivers and wave-washed margins of lakes
RangeOne of the few more widespread species- transcontinental in Canada, in the west, range extends south to California and New Mexico, also in the northeastern US.

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

Photo credits: Contributed by Tim Loh. Contributors retain copyright over their individual contributions.