Nartus sinuatus
This record describes Nartus sinuatus (species). Recorded family: Dytiscidae. Recorded order: Coleoptera.
Identification and Appearance

Black with dark rufous legs; posterior margin of pronotum arched just before hind angles ( 3 ) An uncommonly seen/collected species, most likely due to habitat inaccessibility.
Classification
- Kingdom
- Animalia
- Phylum
- Arthropoda
- Class
- Insecta
- Order
- Coleoptera (Beetles)
- Suborder
- Adephaga
- Family
- Dytiscidae (Predaceous Diving Beetles)
- Subfamily
- Colymbetinae
- Tribe
- Colymbetini
- Genus
- Nartus
Imported taxonomy record. Source availability varies; see the source references and editorial policy below.
Habitat and Range
Habitat
ponds with dense emergent vegetation; also bogs ( 3 )
Geographic Range
transcontinental in the north (BC-WA to NB-MA) ( 3 )
Additional species information
Species notes from the sources
Etymology: Nartus sinuatus (LeConte)
About Primitive Winged Insects: the wider group
Order-level background for Coleoptera, the group containing Nartus sinuatus. 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 Nartus sinuatus (5)
Photo credits: Contributed by Tim Loh; Additional contributions by v belov , Claude Tessier
Frequently Asked Questions About Nartus sinuatus
What is Nartus sinuatus?
Nartus sinuatus is a species in the family Dytiscidae, within the order Coleoptera.
How big is Nartus sinuatus?
9.2-10.9 mm ( 3 )
How do you identify Nartus sinuatus?
Black with dark rufous legs; posterior margin of pronotum arched just before hind angles ( 3 )
Where is Nartus sinuatus found?
| Feature | Details |
|---|---|
| Habitat | ponds with dense emergent vegetation; also bogs ( 3 ) |
| Range | transcontinental in the north (BC-WA to NB-MA) ( 3 ) |
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