| DESCRIPTION: Moth - 3 mm tan with dark marking on upper wing surface | |||||||
| BACKGROUND | LIFE CYCLE | ||||||
| Availability | Habitat | Adult Emergence | Egg Laying | Larva Development | F1 | Adult Life Span | Over Winters |
| N | Higher elevations wherever Tansy ragwort occurs | Not known | On surface of root crown | Mine root crown | Not known | Not known | Larvae in root |
| ATTACK | COLLECTION | NOTES | |||||
| Stage | Damage | Life Stage | Method | Adults too fragile to collect; transfer root with larvae to release site. | |||
| Larvae - | Root miner | Larvae | Dig up root | ||||
| DESCRIPTION: Fly - 4 to 5 mm dull grey covered in short hairs | |||||||
| BACKGROUND | LIFE CYCLE | ||||||
| Availability | Habitat | Adult Emergence | Egg Laying | Larva Development | F1 | Adult Life Span | Over Winters |
| G | Tansy ragwort habitat | Coincides with bud formation on host plant | In flower buds | Seed head | Not known | Larvae Pupae | |
| ATTACK | COLLECTION | NOTES | |||||
| Stage | Damage | Life Stage | Method | Established in Fraser Valley, Vancouver Island and Coastal British Columbia. | |||
| Larvae - | Consumes receptacle material and immature fruit | Mature larvae fall or winter | Clip seedheads | ||||
| DESCRIPTION: Beetle - 2.5 to 3 mm copper colored | |||||||
| BACKGROUND | LIFE CYCLE | ||||||
| Availability | Habitat | Adult Emergence | Egg Laying | Larva Development | F1 | Adult Life Span | Over Winters |
| G | Well drained area, dense stand, mild winter | Spring | Spring into surface layer of soil | Mine root | Not known | Larvae Pupae | |
| ATTACK | COLLECTION | NOTES | |||||
| Stage | Damage | Life Stage | Method | ||||
| Larvae - | Root miner | Adults October | Aspirator sweep net | ||||
| DESCRIPTION: Beetle - 2.5 to 3 mm sandy-brown to yellowish | |||||||
| BACKGROUND | LIFE CYCLE | ||||||
| Availability | Habitat | Adult Emergence | Egg Laying | Larva Development | F1 | Adult Life Span | Over Winters |
| G | Well drained, dense stand, mild winter, low elevation | Early summer | Fall to freeze up in surface layer of soil | Roots | Not known | Larvae Pupae | |
| ATTACK | COLLECTION | NOTES | |||||
| Stage | Damage | Life Stage | Method | ||||
| Larvae - | Root miner | Adults October | Aspirator sweep net | ||||
| DESCRIPTION: Moth - 0.5 to 2.5 cm deep red and black forewings | |||||||
| BACKGROUND | LIFE CYCLE | ||||||
| Availability | Habitat | Adult Emergence | Egg Laying | Larva Development | F1 | Adult Life Span | Over Winters |
| G | Adapted to tansy ragwort habitat; prefers dense stand | Late spring | Late spring, on underside of leaves | Feed on foliage and buds | Not known | Pupae in ground litter | |
| ATTACK | COLLECTION | NOTES | |||||
| Stage | Damage | Life Stage | Method | ||||
| Larvae - | Defoliater | Larvae in early summer | Hand pick | ||||