Marsh Pearl – Moth of the Moment

The Marsh Pearl or Anania perlucidalis to those who prefer their taxonomy with a Greco-Latin twist and a side of taxonomic musical chairs. Formerly dubbed the Fenland Pearl (a name that proved far too geographically localised), this modest little grass moth (Crambidae) is living proof that nature loves to rewrite the maps when entomologists aren’t looking. Marsh Pearl, Anania perlucidalis It has shimmering, pearly-white wings spanning just 21 to 23 millimetres, it wears its pale brown markings with quiet distinction. The real dead giveaway, assuming it sits still long enough for a proper inspection, is a sharp, dark crescent halfway along the leading edge of the forewing complemented by a trio of zig-zags. First seen in the UK on a damp Huntingdonshire fen back in 1957, the Marsh Pearl was assumed to be an elusive fenland specialist. But A. perlucidalis has over the decades, shown it to inhabit reedbeds, water meadows, damp waste ground, and coastal fringes. It’s a single-brooded…