Nebria suturalis

Identified by its flightless condition combined with wing dimorphism (unusual among carabid beetles, where flightless species typically exhibit uniform wing reduction). Restricted to alpine summits separates it from most lowland Nebria species. Nocturnal activity pattern distinguishes it from diurnal carabids in similar habitats.

Restricted to mountain tops; occurs exclusively in high-elevation alpine environments. Specific vegetation associations and substrate preferences are not documented.

Disjunct distribution: northeastern North America (Alberta, Labrador, Ontario, Quebec) and the Rocky Mountains (Colorado, New Hampshire, New York, Vermont, Wyoming).

Carnivorous (adults). Specific prey items are not documented.

Strictly nocturnal. Flightless despite presence of wings in some individuals.

Predator in alpine ground beetle assemblages.

• Other Nebria speciesMost Nebria species occur at lower elevations; N. suturalis is distinguished by its strict restriction to mountain summits.
• Other alpine CarabidaeFlightless condition is shared with many alpine carabids, but wing dimorphism with flightlessness in both forms is unusual and may aid identification.

• Carabidae
• ground beetle
• flightless
• wing dimorphism
• nocturnal
• alpine
• mountain top
• North America
• carnivorous

• BugGuide
• Wikipedia
• GBIF taxonomy match
• iNaturalist taxon
• NCBI Taxonomy
• Catalogue of Life
• The real Eleodes suturalis… | Beetles In The Bush