A study of the distribution and ecology of the lesser silver water-beetle on the Somerset Levels (ENRR591)

The lesser silver water-beetle Hydrochara caraboides is a rare species in Britain, and has its largest population on the peat moors of the Somerset Levels. For many years this was the only known site for the species in Britain, but in 1990 a second population was discovered in Cheshire (Biggs and others 1991).