With an approach, based on chromosomal, biochemical and morphological analysis, we show that the animals wich are classically attributed to C. r. gueldenstaedti and/or to C. r. monacha belong in fact to the taxon C. suaveolens. The oriental forms, formely seen as C. russula, are of the same karyotype as C. suaveolens and are biochemically close to C. suaveolens in Central Europe. The origin of the taxonomical confusion might stem from the large morphological variation in and between populations of C. suaveolens in the Near East.
Based on our results C. russula monacha Thomas, 1906 belongs to the polymorphic species C. suaveolens Pallas, 1811 and we propose to consider C. (russula) gueldenstaedti Pallas, 1881 as "incertae sedis".