Stalk-Eyed Fly vs Japanese Soldier Fly
Side-by-side species comparison
| Attribute | Stalk-Eyed Fly | Japanese Soldier Fly |
|---|---|---|
| Scientific Name | Teleopsis dalmanni | Ptecticus tenebrifer |
| Order | Diptera | Diptera |
| Family | Diopsidae | Stratiomyidae |
| Size | 6-10 mm body (eye span up to 25 mm) | 10-14 mm |
| Habitat | Rivers & Streams | Forests |
| Diet | Fungus Feeders | Scavengers |
| Regions | Asia | East Asia |
| 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.
Japanese Soldier Fly
A slender soldier fly with a metallic greenish-black body and elongate antennae. It is commonly found near decaying organic matter in gardens and forests across East Asia.
Did You Know?
Like the black soldier fly, species of Ptecticus are being studied as potential bioconversion agents for organic waste.