Stalk-Eyed Fly vs Pedilus Beetle
Side-by-side species comparison
| Attribute | Stalk-Eyed Fly | Pedilus Beetle |
|---|---|---|
| Scientific Name | Teleopsis dalmanni | Notoxus monoceros |
| Order | Diptera | Coleoptera |
| Family | Diopsidae | Anthicidae |
| Size | 6-10 mm body (eye span up to 25 mm) | 3-5 mm |
| Habitat | Rivers & Streams | Rivers & Streams |
| Diet | Fungus Feeders | Detritivores |
| Regions | Asia | Europe |
| 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.
Pedilus Beetle
A small ant-like beetle with a distinctive forward-pointing horn on the thorax. Found on sandy ground and under debris. The horn function is unknown but may be used in combat.
Did You Know?
Males bear a prominent forward-pointing thoracic horn whose function remains a mystery to entomologists.