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sulphur knapweed
Scientific Name: Centaurea sulphurea
Family: Asteraceae
Category: Dicot
Growth: Forb/herb
Duration: Annual
Other Names:
Sulphur Knapweed Moth (Agapeta zoegana)
Agapeta zoegana, commonly known as the sulphur knapweed moth or yellow-winged knapweed root moth, is a species of moth in the family Tortricidae.
Taxonomy and Nomenclature
- Scientific Name: Agapeta zoegana
- Common Names: Sulphur knapweed moth, Yellow-winged knapweed root moth
- Synonyms: Phalaena (from the text fragment "Agapeta zoegana bu8182. SYN: Phalaena...")
Distribution and Habitat
- Native to Eurasia.
- Introduced to the western and west-central United States in the 1980s as a biological control agent.
- Observed in locations such as Thompson Falls, Sanders County, Montana, USA.
Ecological Role
- Used as a biological control agent against sulphur knapweed (Centaurea sulphurea) and spotted knapweed.
- Larvae attack the roots of knapweed plants.
Morphological Characteristics
- Small moth, approximately 10 mm in length.
- Bright yellow in color with brown wing bands.
- Adults may be found resting vertically on knapweed plants.