Isogenus nubecula explained

Isogenus nubecula, also known as scarce yellow sally, is a species of stonefly belonging to the family Perlodidae.^[1] It is native to Europe.

The insect was thought to be extinct in Britain, having last been recorded in 1995, but a small population was found on the River Dee, Wales in 2017.^[2] In 2023, the insects were being bred in captivity at Chester Zoo with a view to reintroduction to the wild when water quality has improved.^{[3] [4]}

The species is regarded as critically endangered.

Notes and References

1. Web site: Isogenus nubecula Newman, 1833 . www.gbif.org . 9 February 2021 .
2. Davy-Bowker . John . Hammett . Michael J. . Mauvisseau . Quentin . Sweet . Michael J. . Rediscovery of the critically endangered ‘scarce yellow sally stonefly’ Isogenus nubecula in United Kingdom after a 22 year period of absence . . 13 March 2018 . 4394 . 2 . 10.11646/zootaxa.4394.2.12.
3. Web site: Conservation: Lifeline for endangered insect feared extinct . 2023-08-22 . . 2023-08-22.
4. Web site: Buglife News: Conservationists race to save critically endangered insect found in the River Dee in Wales . Buglife . 29 August 2023.