Udea rubigalis is a pest insect of greenhouses, field crops, and landscape ornamentals, native to North America. They can cause heavy damage, particularly to greenhouse plants.
Description[edit | edit source]
Larvae (caterpillars) are yellow to green, with a white stripe on the back. Older caterpillars create webbing which ties leaves together for protection.
Adult is a small brown moth (wingspan about 3/4 inch).
Symptoms and Signs[edit | edit source]
Tied leaves, heavy feeding damage.
Ecology[edit | edit source]
White eggs are laid on the leaves. Complete life cycle takes about 40 days.
Host plants[edit | edit source]
- Ambrosia (Ragweeds)
- Antirrhinum (Snapdragon)
- Beta (Beets)
- Calendula (Pot Marigold)
- Cirsium (Thistle)
- Daucus (Carrot)
- Dianthus (Carnation)
- Glechoma (Ground Ivy)
- Lactuca (Lettuce)
- Lathyrus (Sweet Pea)
- Rhododendron (Azalea)
- Rosa (Rose)
- Petroselenium (Celery)
- Phaseolus (Beans)
- Salvia (Sage)
- Spinacia (Spinach)
- Viola (Violets)
Control[edit | edit source]
- Predators and parasites: A parasitoid wasp, Meteorus autographae
- Biocontrols (microscopic): Bacillus thuringensis