Insecta, Lepidoptera, Noctuidae .
Description, Biology, Life Cycle, Damage, Common Names, Images
- The eggs are deposited principally on brassicas and red beet but also on asparagus and various other plants.
- Adult: markedly nocturnal, the moth feeds on nectar from various plants, especially lilac (Syringa vulgaris) and honeysuckle (Lonicera). During the day, it stays still, resting on a wall or hidden in the grass. Egg laying occurs soon after emergence. The female lays up to a thousand eggs in decreasing groups of importance (of about 150 units), on the underside of the leaves of host plants (*) .
- Egg: embryonic development lasts only a day or two.
- Larva: 5 to 6 moults. The caterpillar feeds at night, rarely during the day: it moves along and eats across the leaves (*) . If disturbed, it drops at the end of a silk thread and remains still. During the day, it hides. Its development lasts a month.
- 1 annual generation, sometimes 2.
- The moths appear towards mid-June. The caterpillars complete their development and pupat in August. Some remain in diapause until the next spring, others produce a second generation in September and October.
The damage caused by the bright-line brown-eye moth on cabbage and red beet is generally slight.
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