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Cydia millenniana, the larch gall moth, is a moth of the family Tortricidae which galls larch (Larix spp).[1] It is found from Europe to Russia and the Korean Peninsula.

Larch gall moth
Scientific classification
Kingdom:
Animalia
Phylum:
Arthropoda
Class:
Insecta
Order:
Lepidoptera
Family:
Tortricidae
Genus:
Cydia
Species:
C. millenniana
Binomial name
Cydia millenniana
(Adamczewski, 1967)
Synonyms
  • Laspeyresia millenniana Adamczewski, 1967
  • Cydia decidua Razowski, 1996
  • Laspeyresia deciduana Steuer, 1969
  • Cydia milleniana Razowski, 1991

This species is often confused with Cydia zebeana, which makes it difficult to be sure about the data published on the biology of both species. According to Whitebread (1975) and Booij and Diakonoff (1983), larvae of Cydia milleniana form galls, while larvae of Cydia zebeana do not.

The wingspan is 13–18 mm. Adults are on wing in June and July or May and June.

The larvae feed on Larix species. The larvae mine under the bark and cannot be detected, but gradually develop a resinous gall. Bark wounds, caused by the feeding of the larvae, are penetration sites for spores of the larch cancer Lachnellulla willkommii.


References


  1. Redfern, Margaret; Shirley, Peter; Boxham, Michael (2011). British Plant Galls (Second ed.). Shrewsbury: Field Study Council. pp. 148–9. ISBN 978 185153 284 1.





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