Fossil Diptera cat. Simuliidae, most often commonly called black flies, typically occur in association with swift moving streams. Female adults of extant forms are notorious in some parts of the world for their voracious blood-feeding habits of birds and mammals.
Some species are vectors of various filarial, protozoan, and viral diseases.
Immature stages are aquatic with larvae and pupae usually attached to submerged substrates. Interestingly, it has some characters resembling the limoniid genus Antocha Osten Sacken, and other characters that place it in Simuliidae. It is provisionally placed in this catalog in the Simuliidae pending further study and comparison with representatives of the Limoniidae. It is listed in this catalog under Unplaced Nematocera until further studies can be conducted on the type specimen to verify its familial placement. Proposed after 1930 without diagnosis, indication, or description.