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|The Rivulet Perizoma affinitata|
Distribution and Abundance: Local.
Primary Habitat: Woodland.
Flight Period: Single brooded from May to July.
Localities: Badby Wood, Everdon Stubbs, Cottesbrooke Park and Sulby Gardens.
Observations: Apart from a singleton taken at m.v. light in Old Sulehay Forest on 11 June 2011 by Ron Follows all recent records are from the less well recorded western part of the county. As the moth is apparently not uncommon in the adjoining counties of Leicestershire and Warwickshire it seems likely that further colonies are awaiting discovery in west Northants. I have failed in all of my attempts to find the caterpillar in the county by the traditional method of searching old flowers and seed capsules of red campion. Three moths were taken at m.v. light at Everdon Stubbs on 14 May 2004.
Confusion Species: Small Rivulet
First Record: Pre 1961, Castor Hanglands, Pilcher.