Pseudoanthidium gregoriense

Litman, Jessica R., Fateryga, Alexander V., Griswold, Terry L., Aubert, Matthieu, Proshchalykin, Maxim Yu., Divelec, Romain Le, Burrows, Skyler & Praz, Christophe J., 2021, Paraphyly and low levels of genetic divergence in morphologically distinct taxa: revision of the Pseudoanthidium scapulare complex of carder bees (Apoidea: Megachilidae: Anthidiini), Zoological Journal of the Linnean Society CLXVI (CLXVI), pp. 1-51 : 26

Pseudoanthidium gregoriense

Pseudoanthidium gregoriense was described by Nobile (1990) as an island endemic from Sicily. Originally described as a subspecies of P. alpinum, Nobile later raised P. gregoriense to species status (1995). As mentioned above for Stelis leucostoma, Nobile (1995) draws parallels between P. gregoriense , P. leucostoma and P. lituratum . We examined four specimens of this taxon identified by Nobile (including one of his paratypes) and a photograph of the holotype, plus two other female specimens from Sicily. These specimens agree with our concept of P. stigmaticorne .