VU

Hydroporus nigellus

Unknown

Overview

A detailed profile for this species is sourced from the IUCN Red List of Threatened Species as assessments become available.

Hydroporus nigellus faces severe habitat degradation from agricultural intensification and urban development across its limited European range. Water pollution from agricultural runoff and industrial discharge threatens the pristine aquatic conditions this diving beetle requires for survival. Climate change-induced alterations to precipitation patterns and temperature regimes further stress its specialized freshwater habitats.

Threat summary

Habitat

This aquatic diving beetle inhabits clean, well-oxygenated freshwater environments including ponds, slow-moving streams, and wetland margins across parts of Europe. It requires pristine water quality and abundant aquatic vegetation for both feeding and reproduction.

Other threatened species in Dytiscidae

CR

Hydroporus longulus

Unknown
Graptodytes granularisCR

Graptodytes granularis

Unknown
CR

Porhydrus lineatus

Unknown
VU

lesser spangled diving beetle

Graphoderus cinereus

Unknown

Threatened in Åland Islands

Scarce BlackneckCR

Scarce Blackneck

Lygephila craccae

Unknown
EN

Dolichopus notatus

Unknown
Haplodrassus cognatusCR

Haplodrassus cognatus

Unknown
Yellow-breasted BuntingCR

Yellow-breasted Bunting

Emberiza aureola

Declining

Frequently asked questions

Why is Hydroporus nigellus classified as Vulnerable?
Hydroporus nigellus is classified as Vulnerable because the population is declining and the species faces a high risk of extinction in the medium-term future if current pressures continue. Hydroporus nigellus faces severe habitat degradation from agricultural intensification and urban development across its limited European range. Water pollution from agricultural runoff and industrial discharge threatens the pristine aquatic conditions this diving beetle requires for survival. Climate change-induced alterations to precipitation patterns and temperature regimes further stress its specialized freshwater habitats.
Where does Hydroporus nigellus live?
Hydroporus nigellus occurs in Åland Islands, Bulgaria, Canada, Finland, France, and Italy (plus 6 other countries). Country-level distribution data is sourced from the IUCN Red List and cross-referenced with GBIF occurrences.
What are the main threats to Hydroporus nigellus?
The main threats to Hydroporus nigellus are ai-1, ai-2, ai-3, and ai-4. The full IUCN-classified threat record for this species is detailed on the species page.

Get weekly conservation intelligence

One short digest a week of the most striking species and country data we ship, plus breaking conservation news paired with our database where it matters.

Free, no spam. One-click unsubscribe in every email.