Graphoderus bilineatus
Photo: Wikimedia Commons (CC) via https://en.wikipedia.org/wiki/Graphoderus_bilineatus
Overview
A detailed profile for this species is sourced from the IUCN Red List of Threatened Species as assessments become available.
Graphoderus bilineatus faces severe population declines primarily due to habitat degradation and loss of suitable aquatic environments. Water pollution from agricultural runoff and urban development has contaminated many of the clean, well-oxygenated waters this species requires. Climate change is altering precipitation patterns and water temperatures, further reducing available habitat quality and connectivity between populations.
Habitat
This aquatic beetle inhabits clean, well-oxygenated freshwater environments including ponds, lakes, and slow-moving streams with abundant vegetation. It requires stable water levels and high water quality, typically found in less disturbed wetland systems across its European range.