Note On The Occurrence Of Siphlonurus Autumnalis (Ephemeroptera: Siphlonuridae) In A Montana Spring Brook
WESTERN NORTH AMERICAN NATURALIST(2009)
摘要
The little-known mayfly Siphlonurus autumnalis McDunnough (Ephemeroptera: Siphlonuridae) was collected from several locations in its floodplain habitats along the Middle Fork of the Flathead River ill western Montana. To confirm identification, nymphs were reared along with an associated species, S. occidentalis Eaton (Ephemeroptera: Siphlonuridae). Adults emerged from 6 September until 16 October. Habitats are described and the first photos of the 2 sexes are provided.
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关键词
mayfly, Siphlonurus autumnalis, emergence, habitats, Montana, spring brook
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