Parhelophilus
Literature
| Authors | Title |
Year of Publication |
|---|---|---|
| C. Thompson | The genus Pleskeola Stackelberg (Diptera: Syrphidae), a junior synonym of Parhelophilus Girschner | 1997 |
| F.C. Thompson | Keys to Nearctic Syrphidae (Diptera) | 1991 |
| H. Curran | Descriptions of Nearctic Diptera | 1927 |
| H. Loew | Diptera Americae septentrionalis indigena. Description H. Loew. | 1864 |
| H. Loew | Diptera Americae septentrionalis indigena. Description H. Loew. | 1863 |