Figure 1.

Host specificity of Maculinea rebeli in Spain and southeast Poland. (a) Field survival: outer circle, egg distribution (=larval adoption, see §2a) in different Myrmica ant territories (n = 2859 Spain, 102 Poland); inner circle, ant species where Ma. rebeli survived to pupae or adults (n = 148 Spain, 548 Poland). Map: blue, My. schencki recorded as sole host; pink, My. sabuleti primary host; red circle, source of laboratory test ants in Alps. (b) Larval survival after 17 days in paired laboratory ant colonies set from the same naive French source nests.