| Publication Type: | Journal Article |
| Year of Publication: | 1940 |
| Authors: | F. M. Hull |
| Journal: | Proceedings of the Academy of Natural Sciences of Philadelphia |
| Volume: | 92 |
| Pagination: | 309-333 |
| Keywords: | Syrphidae |
Taxonomic name:
| Publication Type: | Journal Article |
| Year of Publication: | 1940 |
| Authors: | F. M. Hull |
| Journal: | Proceedings of the Academy of Natural Sciences of Philadelphia |
| Volume: | 92 |
| Pagination: | 309-333 |
| Keywords: | Syrphidae |