Crossword Genius

Insect I see around lakes at end of March? (10)

Ross

I believe the answer is:

demoiselle

'insect' is the definition.
(type of fly)

'i see around lakes at end of march?' is the wordplay.
'around' is an insertion indicator.
'lakes' becomes 'll' (L is an abbreviation for lake).
'at end of' is a charade indicator (letters next to each other).
'march?' becomes 'demo' (as in a demonstration).
'see' enclosing 'll' is 'selle'.
'i'+'selle'='iselle'
'iselle' after 'demo' is 'DEMOISELLE'.

(Another definition for demoiselle that I've seen is " Young woman (archaic)".)

I've seen this clue in The Times.
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