| Publication Type: | Book Chapter |
| Year of Publication: | 1900 |
| Authors: | S. W. Williston |
| Book Title: | Biologia Centrali-Americana. Insecta. Diptera |
| Volume: | 1. The Supplement [by S.W. Williston, J.M. Aldrich, W.M Wheeler and A.L. Melander] |
| Publisher: | R. H. Porter |
| City: | London |
| Full Text |