The species is a social parasite of Bombus pratorum (Alford, 1975), and possibly also Bombus jonellus (Peeters, Raemakers & Smit, 1999). Celary (1989) cites both these Bombus species as hosts.
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The species is a social parasite of Bombus pratorum (Alford, 1975), and possibly also Bombus jonellus (Peeters, Raemakers & Smit, 1999). Celary (1989) cites both these Bombus species as hosts.
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