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. 2015 Jun 10;10(6):e0127870. doi: 10.1371/journal.pone.0127870

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© 2015 Maebe et al

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.

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Fig 1 — Specimens collected in the Netherlands between the years 1918–1926 before the recent bumblebee declines started (1950–1980), with a picture of each Bombus spp. used in the analysis. Species pictures from [56]. The letters refer to each sampling location: A = N-Holland, B = Z-Holland, C = Overrijssel, D = Gelderland and E = Limburg. Symbol size refers to the amount of species sampled at that location, while the numbers refer to which species. With for the stable and widespread species: 1 = B. hortorum, 2 = B. lapidarius, 3 = B. pratorum, 4 = B. pascuorum; for the declining and restricted species: 5 = B. humilis, 6 = B. ruderatus, 7 = B. subterraneus, 8 = B. sylvarum, and for the declining and widespread species: 9 = B. muscorum, 10 = B. ruderarius, and 11 = B. veteranus.