@article {509, title = {The problem of old names as illustrated by Brachyopa{\textquoteright}conica Panzer{\textquoteright}, with a synopsis of Palaearctic Brachyopa Meigen (Diptera: Syrphidae)}, journal = {Entomologica Scandinavica}, volume = {11}, number = {2}, year = {1980}, pages = {209-216}, address = {Copenhagen}, keywords = {Arthropods, Dipterans/True Flies, Insects, Invertebrates, Syrphidae}, author = {Thompson, F. Christian} } @article {540, title = {Two new Palaearctic Syrphidae (Diptera)}, journal = {Entomologica Scandinavica}, volume = {13}, number = {4}, year = {1982}, pages = {441-444}, address = {Copenhagen}, keywords = {Arthropods, Brachyopa obscura, Dipterans/True Flies, Insects, Invertebrates, Leningrad region, New species, Orthonevra stackelbergi, RUSSIAN SFSR, Syrphidae}, author = {Thompson, F. Christian and Torp, Ernst} } @article {512, title = {Nomenclature of the European species of Neoascia Williston (Diptera: Syrphidae)}, journal = {Entomologica Scandinavica}, volume = {12}, number = {4}, year = {1981}, pages = {470-476}, address = {Copenhagen}, keywords = {Arthropods, Dipterans/True Flies, Insects, Invertebrates, Syrphidae}, author = {Thompson, F. Christian} }