IUCN Threat Status and British Rarity Status for British Coleoptera: Part 1

摘要

The first account of threatened British Coleoptera was included in the British Red Data Books: 2. Insects (Shirt, 1987). This listed 546 of the total British beetle fauna of some 4000 species, which equates to 14% having a conservation status of threat. Shirt used five Categories (Endangered, Vulnerable, Rare, Out of Danger and Endemic) as well as 'Appendix' which concerned extinct species formerly native to Britain but not recorded since 1900. These categories were assigned according to the number of hectads occupied by taxa. Magnitude of decline was not considered. Data sheets were only provided for each of the Category 1 (Endangered) and 2 (Vulnerable) species.