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The ant Myrmica karavajevi is an extremely rarely found and poorly known workerless social parasite of ants of the Myrmica scabrinodis species group. Hereafter detailed information of its previously published findings from four geographical regions in Poland (Bieszczady Mts, Pieniny Mts, Pomeranian Lakeland and Mazovian Lowland) as well as data on three new records from the Roztocze upland, Lubelska...
Maculinea butterflies are social parasites of Myrmica ants. Methods to study the strength of host ant specificity in the Maculinea–Myrmica association include research on chemical and acoustic mimicry as well as experiments on ant adoption and rearing behaviour of Maculinea larvae. Here we present results of laboratory experiments on adoption, survival, development and integration of M. teleius larvae...
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