Tridentaforma

Distinguishable from related families (Incurvariidae, Prodoxidae) by molecular characters and specific genitalia morphology. Within the genus, the two species are separated by male pecten count (three in T. fuscoleuca, four in T. browncopper) and female genitalia characteristics. DNA barcoding shows 14.3% sequence divergence between the two species.

Grassy clearings within Douglas fir-dominated forest (Pseudotsuga menziesii). Specimens collected at undisturbed reference sites; few occurrences from reclaimed waste-rock sites, tailings ponds, and fire-affected areas. Habitat information based on T. browncopper; T. fuscoleuca habitat requirements poorly documented.

Western North America: California (T. fuscoleuca), western Canada including British Columbia (both species). T. browncopper specifically known only from the Thompson Plateau region near Logan Lake, south-central British Columbia.

T. browncopper was discovered during a biodiversity monitoring program at the Highland Valley Copper mine, demonstrating the value of environmental impact assessments in documenting undescribed species. The species name incorporates nłeʔképmxcín traditional knowledge, with the scientific name translating the Indigenous name skʷúnkʷl̓itkax̣n̓I ("brown copper moth").

• IncurvariidaeTridentaforma was historically classified in this family; distinguished by molecular phylogenetics and unique genitalia morphology.
• ProdoxidaePrevious family placement; yucca moths and allies, separated by molecular data and structural differences in male and female genitalia.

Historically considered a 'problematic genus' due to uncertain familial placement; resolved as the sole genus of Tridentaformidae in 2015.

• micromoth
• western North America
• genitalia dimorphism
• DNA barcoding discovery
• Indigenous knowledge integration

• BugGuide
• Wikipedia
• GBIF taxonomy match
• iNaturalist taxon
• NCBI Taxonomy
• Catalogue of Life
• The brown copper moth, Tridentaforma browncopper: DNA barcoding reveals a second species in the family Tridentaformidae (Lepidoptera, Adeloidea).