Half-moon hairstreak (Satyrium semiluna) COSEWIC assessment and status report: chapter 11

Special significance of the species

Satyrium semiluna is one of a number of species that reach their distribution limit in southwestern Canada and are restricted to a very small percentage of the Canadian landscape. The Alberta population of the butterfly is disjunct from populations to the south in the United States and from the other Canadian populations in British Columbia.

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