Agriphila biarmicus
Tengström, 1865
A small crambid with a trans-continental distribution spanning northern Europe and North America. First described from Fennoscandia in 1865, it exhibits notable geographic variation in size, with North American significantly larger than European . The inhabits cool, northern latitudes and montane regions.
Pronunciation
How to pronounce Agriphila biarmicus: //æɡˈrɪfɪlə baɪˈɑrmɪkəs//
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Identification
European have a wingspan of 12–13 mm, while the North American subspecies A. b. paganella reaches approximately 19 mm. This size difference between continents is the most readily observable distinguishing feature. Specific pattern details are not documented in available sources.
Distribution
Fennoscandia, north-western Russia, Estonia, Latvia, the Alps of Switzerland, Austria and Italy, and North America (Alberta and Quebec, Canada). Distribution records confirm presence in Norway and Sweden.
Similar Taxa
- Other Agriphila speciesWingspan measurements may help distinguish A. biarmicus from , particularly the larger North American paganella at 19 mm versus typical European Agriphila sizes.
More Details
Subspecies
Four are recognized: A. b. biarmicus (Scandinavia, north-western Russia), A. b. illatella (Scandinavia), A. b. alpina (Alps), and A. b. paganella (North America). The alpine and North American subspecies represent distinct geographic isolates in montane and trans-Atlantic regions respectively.