This Ephemerella invaria sulphur dun got stuck in its shuck trying to emerge.  This isn't exactly a "natural" pose for a photograph, but it kind of shows what an emerger pattern could look like.

Caption

This Ephemerella invaria sulphur dun got stuck in its shuck trying to emerge. This isn't exactly a "natural" pose for a photograph, but it kind of shows what an emerger pattern could look like.
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