This upland species, occurring on acid heaths and boggy moorland, is distributed mostly in Northern Britain, from Wales through Northern England into most of Scotland.
The adults are externally similar to several other Elachista species, and are best identified with certainty by reference to the genitalic structure.
The moths themselves fly during the late afternoon, between May and August.
The larvae feed on various sedges (Carex spp.), mining the leaves.