Van Nieukerken et al (2016) synonymised Stigmella nakamurai Kemperman & Wilkinson, 1985 from Japan with S. palionisi from Russia: Primorye, on the basis of a comparison of descriptions, a male paratype slide of S. nakamurai (Fig. 41, 42) and detailed photos of S. palionisi genitalia (Rocienė and Stonis 2013; Stonis and Rocienė 2013) (also Fig. 43). This also confirms Ulmus as host for S. palionisi. This species is also morphologically very similar to European S. viscerella (Stainton, 1853), but the mines are somewhat different.
Holotype male, Russia: Primor'ye, 20 km E of Ussuriysk, 27.vii.1983, R. Puplesis
type genitalia preparation:
Russian Academy of Sciences, Zoological Institute, Zoological Museum, St Petersburg (ZIAN)