- Rhigognostis annulatella
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Rhigognostis annulatella 
Scientific classification Kingdom: Animalia Phylum: Arthropoda Class: Insecta Order: Lepidoptera Family: Plutellidae Genus: Rhigognostis Species: R. annulatella Binomial name Rhigognostis annulatella
(Curtis, 1832)Synonyms - Cerostoma annulatella Curtis, 1832
- Plutella bicingulata Zeller, 1839
The Ringed Diamond-back or Annulated Smudge (Rhigognostis annulatella) is a moth of the Plutellidae family. It is found in most of Europe.
Illustration from John Curtis's British Entomology Volume 6
The wingspan is about 18 mm. Adults are on wing from July onwards, and overwinter in this stage, occurring on the wing until April.
The larvae feed on Cochlearia officinalis. They feed amongst spun leaves and flowers. The pupal cocoon is formed from a network of silk.
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