@article {Wakerley1959, title = {A new species of Psila Meigen (Diptera: Psilidae) from northern England}, journal = {Proceedings of the Royal Entomological Society of London. Series B, Taxonomy}, volume = {28}, number = {7-8}, year = {1959}, pages = {107{\textendash}108}, publisher = {Wiley Online Library}, keywords = {Chamaepsila persimilis, Psila fimetaria, Psila persimilis}, author = {Wakerley, S.B.} } @article {Collin1959, title = {A new species of Psila (Diptera, Psilidae) from Yugoslavia}, journal = {Entomologist}, volume = {92}, year = {1959}, pages = {241}, keywords = {Chamaepsila strigata, Psila humeralis, Psila pectoralis, Psila strigata}, author = {Collin, J. E.} }