Hochkirch, A., Dey, L.-S. & Husemann, M. (2023) Phylogeography of the grasshopper genus Oedipoda (Acrididae: Oedipodinae) in the Mediterranean: classic refugia and cryptic lineages. Biological Journal of the Linnean Society. Available at http://academic.oup.com/biolinnean/advance-article/doi/10.1093/biolinnean/blad044/7191643

This says both subspecies are synonyms of nominate.