# Spermophilus pygmaeus musicus

> subspecies of mammal

**Wikidata**: [Q24283810](https://www.wikidata.org/wiki/Q24283810)  
**Source**: https://4ort.xyz/entity/spermophilus-pygmaeus-musicus


## References

1. Generic revision in the Holarctic ground squirrel genus Spermophilus
2. Integrated Taxonomic Information System
3. Global Biodiversity Information Facility
4. Evolution and spectral tuning of visual pigments in birds and mammals