Cydia medicaginis, the alfalfa moth, is a moth of the family Tortricidae. It is found in northern and central Europe (Great Britain, Latvia, Finland, Sweden, Denmark, Germany, France, Poland, Romania), Transcaucasus, Kazakhstan and from western Russia to southern Siberia.

Alfalfa moth
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Lepidoptera
Family: Tortricidae
Genus: Cydia
Species:
C. medicaginis
Binomial name
Cydia medicaginis
(Kuznetzov, 1962)
Synonyms
  • Laspeyresia medicaginis Kuznetzov, 1962

The wingspan is 9–12 mm. Adults are on wing from early June to early August. There is one generation per year.

The larvae feed on Medicago, Genista, Ulex, Sarothammus, Cytisus and Lotus species. It is considered a pest of lucerne and other Leguminosae. The larvae feed on the seeds of the host plant.

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