Formosa Long-armed Scarab vs Brassy Willow Beetle
Side-by-side species comparison
| Attribute | Formosa Long-armed Scarab | Brassy Willow Beetle |
|---|---|---|
| Scientific Name | Cheirotonus formosanus | Phratora vitellinae |
| Order | Coleoptera | Coleoptera |
| Family | Euchirinae | Chrysomelidae |
| Size | 40-60 mm | 3-5 mm |
| Habitat | Forests | Rivers & Streams |
| Diet | Sap Feeders | Detritivores |
| Regions | Taiwan | Europe, Northern Asia |
| Conservation | Endangered | Least Concern |
Formosa Long-armed Scarab
A rare Taiwanese scarab with elongated forelimbs and a dark chestnut-brown body. It is found only in old-growth mountain forests on the island.
Did You Know?
Illegal collecting for the pet trade has made this one of the most threatened beetles in East Asia.
Brassy Willow Beetle
A small, shiny metallic bronze to greenish beetle that feeds on willow and poplar. Adults overwinter in leaf litter and emerge in spring to colonize new willow growth.
Did You Know?
Larvae secrete salicylaldehyde, a chemical obtained from salicin in willow leaves, which smells like antiseptic and deters predators.