Generally, Lycaenidae species which have a myrmecophilous relationship with the ant genus "Myrmica" are locked to primary host specificity. The Alcon blue is unusual in this regard in that it uses different host species in different locations throughout Europe, and often uses multiple host species even within the same location and population. Though it may be adopted into the nests of multiple "Myrmica" species within a given site, there is typically one "primary" species with which the locally adapted larvae can best socially integrate, leading to drastically higher survival rates. Across Europe, Alcons are known to use "Myrmica scabrinodis", "Myrmica ruginodis", "Myrmica rubra", "Myrmica sabuleti," "Myrmica scabrinodis, Myrmica schencki," and rarely "Myrmica lonae," and "Myrmica specioides".