Perimede falcata
Braun, 1919
Perimede falcata is a small in the Cosmopterigidae, described by Annette Frances Braun in 1919. It occurs across eastern North America from the Great Lakes region to the Gulf Coast. are active year-round and are characterized by distinctive wing coloration.


Pronunciation
How to pronounce Perimede falcata: //pɛˈɹɪmiːdi fælˈkɑːtə//
These audio files are automatically generated. While they are not always 100% accurate, they are a good starting point.
Identification
Distinguished from other small Cosmopterigidae by the combination of shining grayish-white forewings with purplish dusting and the small wingspan (11.5–14 mm). The specific epithet 'falcata' (sickle-shaped) may refer to a wing characteristic, though this is not explicitly described in available sources.
Images
Distribution
Eastern North America: recorded from Ohio, Massachusetts, New York, and Illinois south to Florida and Louisiana.
Seasonality
have been recorded on wing year round.
More Details
Taxonomic Note
Catalogue of Life and GBIF list this as a synonym of Mompha falcata ( Momphidae), while NCBI and iNaturalist retain it in Cosmopterigidae under Perimede. The taxonomic placement remains unresolved.
Sources and further reading
- BugGuide
- Wikipedia
- GBIF taxonomy match
- iNaturalist taxon
- NCBI Taxonomy
- Catalogue of Life
- The Changing Distributions of our Grasshoppers, Crickets and Relatives - Buglife Blog - Buglife
- 🌿 Botanizing w/ the Webster Groves Nature Study Society (WGNSS) Botany Group at Fults Hill Prairie Nature Preserve — 27 Oct 2025 | Beetles In The Bush
- North America’s itsiest bitsiest longhorned beetle | Beetles In The Bush
- November | 2025 | Beetles In The Bush
- Art and Bob and Ted’s Excellent Adventure | Beetles In The Bush
- August | 2022 | Beetles In The Bush