Crambidia dusca

The small size (27 mm wingspan) and pale coloration place it within the Crambidia genus, but definitive identification requires examination of genitalia or comparison with closely related species such as Crambidia pallida and Crambidia cephalica. The disjunct California-Ontario distribution pattern may help distinguish it from more widespread congeners, though this alone is not diagnostic. Specific identification characters for C. dusca versus other small Crambidia species are not documented in available literature.

Wingspan approximately 27 mm. As a member of the genus Crambidia, it likely exhibits the characteristic pale or whitish coloration with reduced patterning typical of lichen moths in the tribe Lithosiini. Detailed description of wing pattern, body coloration, and genitalia has not been located in available sources.

Recorded from California (western North America) and Ontario (eastern North America). The species has a disjunct distribution with no intermediate records documented. GBIF confirms presence in North America.

• Crambidia pallidaSimilar small size and pale coloration; requires genital dissection or detailed wing pattern analysis to distinguish
• Crambidia cephalicaOverlapping size range and geographic distribution in parts of North America; subtle differences in forewing pattern and male genitalia separate the species
• Crambidia castaAnother small pale Crambidia species with which C. dusca may be confused in areas of sympatry

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