Eucosma sombreana
Kearfott, 1905
Eucosma sombreana is a small tortricid described by Kearfott in 1905. It is recorded from scattered localities across central and eastern North America. are active during summer and early autumn.
Pronunciation
How to pronounce Eucosma sombreana: /juːˈkɒzmə sɒmbˈriːənə/
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Identification
Distinguished from other Eucosma by geographic range and . Specific diagnostic characters require examination of genitalia. The sombre coloration may separate it from more boldly patterned , though this is not definitive without dissection.
Images
Appearance
Wingspan 19–25 mm. Forewings and hindwings are relatively narrow, typical of the Eucosma. Coloration is subdued, consistent with the epithet 'sombreana'.
Distribution
Recorded from South Carolina, Oklahoma, Iowa, Illinois, Ontario, and Manitoba. Distribution appears discontinuous across the central and eastern United States and adjacent Canada.
Seasonality
have been recorded from June to October, with peak activity likely in mid-summer.
Similar Taxa
- Other Eucosma speciesMany Eucosma share similar size, wing shape, and subdued coloration. Reliable identification requires genital dissection and reference to original description.
More Details
Taxonomic note
Eucosma is a large and taxonomically difficult within Olethreutinae. Many , including E. sombreana, are poorly illustrated in popular guides and require identification.