[Bowser et al sequenced genomes of galls similar to Rabdophaga rosaria found on Salix pulchra and fuscescens and found they clustered with sequences from R rosaria on Salix purpurea in Poland. They "tentatively identify Alaskan members of this clade as Rabdophaga cf rosaria," but state that "Alaskan specimens of Rabdophaga cf. rosaria were different enough from the one Old World sequence of R. rosaria that they may represent separate species."]
”- Matt Bowser, Apphia Bowser, Ethan Bowser, Miriam Bowser, Dominique Collet, Tracy Melvin: (2018) DNA barcoding Alaskan willow rosette gall makers (Diptera: Cecidomyiidae: Rabdophaga)©