Synopsis of sampling data and typed microsatellite alleles for each site and year.

1Number of bees collected (sample size).
2Number of different host species in sample.
3Percentage of species infected with C. bombi.
4Percentage of infected individuals in sample.
5Proportion multiple infections among all infections in sample.
6Number of unique alleles typed for each locus; sequence of loci given in parentheses.
7Total number of rare alleles found in sample.