Insecta, Lepidoptera, Tortricidae .
Description, Biology, Life Cycle, Damage, Common Names, Images
- Host plants: peas, vetches (Lathyrus pratensis, Lathyrus odoratus), tares (Vicia cracca, Vicia sativa), clover, lentil.
- Adult: looks for sheltered places with dense vegetation. Egg laying occurs at intervals over 5 to 11 days after emergence. The female deposits 1 to 3 eggs on the stipules or the leaflets.
- Egg: embryonic development lasts from 1 to 3 weeks depending on the temperature.
- Larva: the caterpillar goes through a very short wandering stage (1 day) before penetrating a young pod (*) . Larval development lasts 18 to 30 days, then the larva leaves the pod and migrates to the ground where it spins a cocoon containing particles of soil and then hibernates (*) .
- 1 generation per year.
- Beginning of May, the caterpillar leaves its winter cocoon, pupates in a slight cocoon just below the surface of the ground and pupates. Emergence and moth flight towards pea crops begins at the end of May, coinciding with the start of flowering, and continues until the end of July.
Each caterpillar damages up to 6 seeds but only 1 or 2 are severely gnawed. However, perforation of the seeds, the presence of caterpillars and stains bring about the rejection consignments of attacked peas, by processors and the packing trade (*) .
HYPPZ on line : Species (scientific name), Pests (common names), Glossary, Crops.