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Anarsia lineatella Zeller
Insecta, Lepidoptera, Gelechiidae .

Peach twig borer

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


[R]Description
- Adult: 14 a 16 mm wingspan. Very narrow wings; the fore wings, grey black or brown, present black longitudinal stripes and a large brown spot in the middle of the fore border. The hind wings are larger, grey and fringed. The head bears two grey labial palps projected forwards.
- Egg: elongated and orangy.
- caterpillar: 15 to 16 mm, black head, dark brown abdomen with a narrow pale line at the edge of each segment giving it a ringed appearence; well developed anal comb.

[R]Biology
- Host plants: stone-fruit trees, particularly peach, as well as apricot, plum, almond, and cherry.
- Adult: The female lays her eggs singly at the base of the leaves.
- Egg: development lasts 12 to 15 days.
- Larva: The caterpillar forms galleries in the young shoots and can attack 5 to 6 branches (*) ; it also penetrates the fruit, forms galleries in the pulp and then gnaws the stone.
- Pupa (*) : pupal stages lasts 10 days.

[R]Life Cycle
- 2 annual generations.
- the caterpillars having hibernated, abandon their shelter at the time when the first leaves appear and penetrate the branches, then, their growth finished, they pupate. The adults lay eggs and after hatching, from July to the end of September, the neonate caterpillars penetrate the shoots and especially the fruit, then pupate in a leaf or at the base of the fruit. Egg laying occurs on leaves and the young first-instar caterpillars shelter under the bark of the new years shoots to hibernate.

[R]Damage
The attacks on shoots are not very damaging except in nurseries. However, late fruits can be damaged significantly.


[R]Common Names
DE: Pfirsichmotte ES: Pequeña minadora de los brotes FR: Petite mineuse du pêcher IT: Tignola del pesco PT: Lagarta mineira do pessegueiro GB: Peach twig borer

[R] Images

  1. Anarsia lineatella Zeller Springtime damage On a peach flower bud. The larva expels dry frass.
  2. Anarsia lineatella Zeller Moth On a peach leaf.
  3. Anarsia lineatella Zeller Cocoon Larva weaving its cocoon along a bud.

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