Basionym Name:Acarospora hospitans H. Magn., Göteborg. Vetensk.-och Vitter.-Handl., Ser. 4 28(no. 2): 11, tab. II, fig. 8 (1924)
Homotypic synonyms:Acarospora impressula var. hospitans (H. Magn.) Clauzade & Cl. Roux, Bull. Mus. Hist. Nat. Marseille 41: 80 (1981)Acarospora veronensis f. hospitans (H. Magn.) Clauzade & Cl. Roux, Bull. Soc. linn. Provence 27: 48 (1974)