Bibliography
Source: Catalogue of Life
1 result
Williston, S.W. (1882) Contribution to a monograph of the North American Syrphidae. Proc. Amer. Philos. Soc, 20. |
Citation
Cheilosia lasiophthalmus Williston, 1882 in undefined
Source: Catalogue of Life
Williston, S.W. (1882) Contribution to a monograph of the North American Syrphidae. Proc. Amer. Philos. Soc, 20. |
Cheilosia lasiophthalmus Williston, 1882 in undefined