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First record and new host record of the obligate dulotic ant, Polyergus bicolor (Hymenoptera: Formicidae), in Alberta, Canada

Christine E. Sosiak, Mari West, James R.N. Glasier


We describe the discovery of Polyergus bicolor, an obligate slave-making ant species, as a new provincial record in Alberta. This species was previously known mostly from eastern Canada and the northeastern United States and has been sparsely collected: only once in the past 50 years. Polyergus bicolor was discovered parasitizing Formica podzolica, which is also a new host for the species. This discovery marks a significant expansion of both range and host for P. bicolor.


Polyergus bicolor; dulotic parasitism; range expansion; host expansion; Alberta; Formica podzolica

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