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Lyonetia clerkella (L.)
Insecta, Lepidoptera, Lyonetiidae .

Apple leaf miner

Description, Biology, Life Cycle, Damage, Common Names, Images

- Adult: 9 mm wingspan, generally shiny white. Thin wings bordered by long bristles, the fore ones shining silvery white with reddish brown extremities and a small black spot at the apex (*) .
- Larva: 8 to 9 mm long, progressively narrowing posteriorly, green with 2 dark spots on the 3 first segments.
- Pupa: in a white cocoon, satin-like, elongated form suspended to branches by silken threads, like a hammock (*) .

- Host plants: apple, pear, cherry, plum, quince and peach.
- Adult: nocturnal tendencies; it lives 7 to 10 days. The female lays on the underside of the leaves inserting its eggs in the parenchyma with its oviscapt. The moth from the last generation hibernates, sheltered in cracks of bark or other natural shelters.
- Egg: embryonic development lasts 15 days.
- Larva: the caterpillar forms in the parenchyma a characteristic mine, elongated and narrow (*) ; by the end of its growth, (20 to 25 days), it vacates the gallery, ties the sides of a neighbouring leaf with silk threads and pupates in a cocoon formed by a few threads (*) .
- Pupa: development lasts 15 days.

[R]Life Cycle
- 3 to 4 generations per year.
- The adults having hibernated oviposite in April and May. The second flight occurs in June-July and the third begins end of July or in August; sometimes there is a fourth flight from September to November. It is these moths (third generation) which hibernate.

In cases of heavy infestation, the caterpillars which live between the two epidermis of the leaf can cause almost complete defoliation of the trees and reduce cropping and also fruit production potential for the future.

[R]Common Names
DE: Obstbaumminiermotte, Schlangenminiermotte ES: Minadora sinusoide de árboles frutales FR: Mineuse des feuilles d'arbres fruitiers IT: Tignola del melo PT: Lagarta mineira das folhas das fruteiras GB: Apple leaf miner

[R] Images

  1. Lyonetia clerkella (L.) Moth at rest on an apple leaf (Coutin R. / OPIE)
  2. Lyonetia clerkella (L.) Damage on apple : mine in a leaf (Coutin R. / OPIE)
  3. Lyonetia clerkella (L.) Pupal cocoons Formed on the underside of apple leaves.
  4. Lyonetia clerkella (L.) Pupa in its cocoon On the underside of an apple tree leaf.

To read this page in French

HYPPZ on line : Species (scientific name), Pests (common names), Glossary, Crops.

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