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Taeniopterygidae are a family of stone flies with about 110 described extant species. They are commonly called willowflies or winter stoneflies and have a holarctic distribution. Adults are usually smaller than 15 mm.

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Brachyptera is a genus of taeniopterygid stoneflies of mostly Western Palearctic distribution.

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Brachyptera putata, the northern February red, is a species of stonefly in the family Taeniopterygidae.

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Oemopteryx is a genus of winter stoneflies in the family Taeniopterygidae. There are about six described species in Oemopteryx.

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Oemopteryx glacialis, the Canadian willowfly, is a species of winter stonefly in the family Taeniopterygidae. It is found in North America.

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Strophopteryx is a genus of winter stoneflies in the family Taeniopterygidae. There are about seven described species in Strophopteryx.

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Strophopteryx fasciata, the mottled willowfly, is a species of winter stonefly in the family Taeniopterygidae. It is found in North America.

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Taenionema is a genus of winter stoneflies in the family Taeniopterygidae. There are about 14 described species in Taenionema.

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Taenionema atlanticum, the Atlantic willowfly, is a species of winter stonefly in the family Taeniopterygidae. It is found in North America.

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Taeniopteryx is a genus of winter stoneflies in the family Taeniopterygidae. There are more than 20 described species in Taeniopteryx.

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Taeniopteryx burksi, the eastern willowfly, is a species of winter stonefly in the family Taeniopterygidae. It is found in North America.

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Taeniopteryx nivalis, the boreal willowfly, is a species of winter stonefly in the family Taeniopterygidae. It is found in North America.