Stalk-Eyed Fly vs Western Encephalitis Mosquito
Side-by-side species comparison
| Attribute | Stalk-Eyed Fly | Western Encephalitis Mosquito |
|---|---|---|
| Scientific Name | Teleopsis dalmanni | Culex tarsalis |
| Order | Diptera | Diptera |
| Family | Diopsidae | Culicidae |
| Size | 6-10 mm body (eye span up to 25 mm) | 4-6 mm |
| Habitat | Rivers & Streams | Wetlands |
| Diet | Fungus Feeders | Blood Feeders |
| Regions | Asia | Western North America, from Canada to Mexico |
| Conservation | Least Concern | Least Concern |
Stalk-Eyed Fly
Males have eyes on the tips of long rigid stalks that can span wider than their body length. Females prefer males with wider eye spans, driving extreme sexual selection.
Did You Know?
Males compete by facing each other and comparing eye span — the wider-eyed male wins. Females prefer wide-eyed males because eye span indicates good genes.
Western Encephalitis Mosquito
A medium-sized mosquito with a distinctive white band on the proboscis and banded legs. It is the most important vector of Western equine encephalitis and St. Louis encephalitis in western North America. It breeds in a wide variety of sunlit and shaded water sources.
Did You Know?
Its feeding behavior shifts seasonally from birds in spring to mammals in late summer, which drives encephalitis virus spillover to humans.