Cloëon simile - Lake Olive
The lake olive is one of very few upwinged flies that occur in large
numbers on some lowland lakes in Wales. This fly is not usually found in
small pools; there its close relative the Pond Olive (Cloëon diptera) is more common. The
nymph is an agile darter.
The dun
The dun leaves the surface in open water, usually well away from the
shore, and so when duns are hatching a dry fly can give good sport.
The spinner
The 'apricot' spinner lays her eggs on the surface from late afternoon on
into darkness. A Tups Indispensable is a pretty good representation of the
egg-laying spinner.
Footnote: Cloëon is often written simply as Cloeon (without the accent on the e) but as this is the scientific name given to a genus the capitalised form Cloeon is used rather than cloeon.
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