Key to the subspecies of Satyrium stenopetalum
| 1a | Spurs 19-30 mm long; lateral sepals 7-13 mm long | subsp. stenopetalum |
| 1b | Spurs 9-14 mm long; lateral sepals 5-10 mm long | subsp.brevicalcaratum |
World Checklist of Selected Plant Families. The Board of Trustees of the Royal Botanic Gardens, Kew. Published on the Internet; http://www.kew.org/wcsp/ accessed 10.01.2015
