Demetrias imperialis
This record describes Demetrias imperialis (species). Recorded family: Carabidae. Recorded order: Coleoptera.
Identification and Appearance
Length 5 to 5.5 mm. A distinctive ground beetle. It has straw brown elytra with dark/blackish markings. This is a rare species in our area and good photographs are required to support records. Uncommon in Britain and classed Nationally notable B. Mainly recorded from the south eastern corner of England from The Wash to the Isle of Wight. https://markgtelfer.co.uk/files/pdfs/15%20dromius%20demetrias%20(telfer%20and%20walters%202014)%20.pdf No additional images available for this species.
Classification
- Kingdom
- Animalia
- Phylum
- Arthropoda
- Class
- Insecta
- Order
- Coleoptera
- Family
- Carabidae
- Genus
- Demetrias
Imported taxonomy record. Source availability varies; see the source references and editorial policy below.
Habitat and Range
Habitat
A characteristic beetle of reed beds.
Seasonal Activity
All year round.
Additional species information
Recorded status
Uncommon in Britain and classed Nationally notable B. Mainly recorded from the south eastern corner of England from The Wash to the Isle of Wight.
About Primitive Winged Insects: the wider group
Order-level background for Coleoptera, the group containing Demetrias imperialis. 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.
Frequently Asked Questions About Demetrias imperialis
What is Demetrias imperialis?
Demetrias imperialis is a species in the family Carabidae, within the order Coleoptera.
How big is Demetrias imperialis?
5 to 5.5 mm. A distinctive ground beetle. It has straw brown elytra with dark/blackish markings.
Where is Demetrias imperialis found?
Habitat: A characteristic beetle of reed beds.
When is Demetrias imperialis active?
Demetrias imperialis: seasonal activity - All year round..