Black-Tailed Deer Fly vs Giant Western Crane Fly
Side-by-side species comparison
| Attribute | Black-Tailed Deer Fly | Giant Western Crane Fly |
|---|---|---|
| Scientific Name | Chrysops niger | Holorusia hespera |
| Order | Diptera | Diptera |
| Family | Tabanidae | Tipulidae |
| Size | 7-10 mm | 35-45 mm body length |
| Habitat | Wetlands | Forests |
| Diet | Blood Feeders | Detritivores |
| Regions | Northeastern United States and southeastern Canada | Western North America |
| Conservation | Least Concern | Least Concern |
Black-Tailed Deer Fly
A small dark deer fly with mostly blackened wings and green iridescent eyes. It is an aggressive daytime biter commonly encountered near wooded wetlands.
Did You Know?
It is most active during overcast humid days and tends to bite repeatedly if swatted away without being killed.
Giant Western Crane Fly
North America's largest crane fly with a wingspan approaching 80 mm. It inhabits mossy stream banks in western mountain forests.
Did You Know?
It is the largest fly in North America and one of the largest true flies in the world.