Ipimorpha retusa
Scientific classification
Kingdom:	Animalia
Phylum:	Arthropoda
Class:	Insecta
Order:	Lepidoptera
Family:	Noctuidae
Genus:	Ipimorpha
Species:	I. retusa
Binomial name
Ipimorpha retusa (Linnaeus, 1761)[1]
Synonyms
Phalaena retusa Linnaeus, 1761 Phalaena vetula Hübner, 1788 Phalaena (Tortrix) merianana Lang, 1789 Phalaena (Noctua) chrysoglossa Beckwith, 1794 Noctua gracilis Haworth, 1809 (preocc. Denis & Schiffermüller, 1775) Cosmia curvata Butler, 1886

The Double Kidney (Ipimorpha retusa) is a moth of the Noctuidae family. It is found in most of Europe. In the east, the range extends through Turkey, Siberia, Mongolia and China to Korea and Japan. The habitat consists of damp marshy places.

The wingspan is 28–32 mm. The ground colour of the forewings ranges from reddish-brown to dark brown. The hindwings are greyish brown. Adults are on wing from July to September.

The larvae feed on Salix and Populus species, spinning together the shoots. They can be found from May to June. The species overwinters as an egg.

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