| Isogenus nubecula | |
|---|---|
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Clade: | Pancrustacea |
| Class: | Insecta |
| Order: | Plecoptera |
| Family: | Perlodidae |
| Genus: | Isogenus |
| Species: | I. nubecula |
| Binomial name | |
| Isogenus nubecula Newman, 1833 | |
Isogenus nubecula, also known as scarce yellow sally, is a species of stonefly belonging to the family Perlodidae. 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. 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.
The species is regarded as critically endangered.