Elachista acenteta

Distinguished from other Elachista species by geographic distribution combined with genitalia morphology (the species was described based on dissection). External identification to species level is challenging and requires microscopic examination. The combination of small size and presence in the Great Plains and eastern Canadian provinces may help narrow possibilities, but definitive identification relies on dissection and comparison with type material.

Small moth with forewings 4.5–6.2 mm in length. Wing pattern and coloration details are not documented in available sources. Body proportions typical for the genus Elachista, with relatively narrow, pointed forewings.

Recorded from Nova Scotia, Ontario, and Quebec in Canada, and from Colorado and Nebraska in the United States. The disjunct distribution between eastern Canada and the central Great Plains suggests either a broader, undocumented range or isolated populations in suitable habitat patches.

• Other Elachista speciesMany Elachista species are externally similar and require genitalia dissection for reliable identification. E. acenteta is part of a species complex where subtle morphological differences separate taxa.

• microlepidoptera
• grass-miner moth
• North American endemic
• Braun 1948

• BugGuide
• Wikipedia
• GBIF taxonomy match
• iNaturalist taxon
• Catalogue of Life