Phaedon viridis
Melsheimer, 1847
watercress leaf beetle
Phaedon viridis, commonly known as the watercress leaf beetle, is a leaf beetle in the Chrysomelidae. It is native to North America and has been documented across multiple Canadian provinces including Alberta, British Columbia, and Manitoba. The species is associated with aquatic or semi-aquatic where its plants grow.
Pronunciation
How to pronounce Phaedon viridis: /ˈfiː.dɒn ˈvɪ.rɪ.dɪs/
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Habitat
Associated with aquatic and semi-aquatic environments where watercress (Nasturtium officinale) and related plants in the Brassicaceae occur. These include streams, springs, and wet meadows.
Distribution
North America. Documented in Canadian provinces: Alberta, British Columbia, and Manitoba. GBIF records confirm presence in North America broadly.
Diet
Feeds on watercress (Nasturtium officinale) and related Brassicaceae plants, based on association and -level feeding habits of Phaedon .
Host Associations
- Nasturtium officinale - primary 'watercress leaf beetle' indicates association with watercress
Ecological Role
Herbivore in aquatic and riparian . As a leaf beetle, likely contributes to nutrient cycling through herbivory on aquatic vegetation.
Human Relevance
Minor potential agricultural or horticultural significance due to feeding on watercress, which is cultivated as a food crop. No major economic impact documented.
Similar Taxa
- Phaedon cochleariaeSame with similar preferences; both associated with Brassicaceae in wet environments
- Phaedon armoraciaeCongeneric with overlapping plant and potential geographic range
More Details
Taxonomic Note
described by Melsheimer in 1847. The Phaedon contains numerous leaf beetle species specialized on Brassicaceae plants.