Uk-decline
Guides
Oligia strigilis
Marbled Minor
Oligia strigilis, the Marbled Minor, is a noctuid moth distributed across Britain, Europe, and Central Asia, with accidental introduction and rapid spread in northeastern North America. It is one of three similar Oligia species in the UK that require genitalia examination for reliable identification. The species has declined by 76% in Britain since the 1970s despite potential range expansion. Melanic forms occur frequently and have been of significant evolutionary interest.