Point-count-methodology
Guides
Boloria chariclea montinus
White Mountain Fritillary
The White Mountain Fritillary is a critically imperiled subspecies endemic to the alpine zone of the Presidential Range in New Hampshire's White Mountains. A glacial relict isolated for approximately 9,000 years, it represents one of the rarest butterfly populations in eastern North America. Systematic point-count surveys in 2012-2013 found highest densities in herbaceous-snowbank plant communities, though the more widespread heath-shrub-rush community likely supports the majority of adults. The subspecies is easily alarmed by human approach and exhibits variable detectability depending on weather conditions.