Figure 1.

Sampling locations in the western Iberian Peninsula of each wild bumblebee used in this study. Individuals from the northern location are shown in blue squares and from the southern location in orange circles. NNear—northern location near greenhouses (blue filled squares); NFar—northern location far from greenhouses (blue empty squares); SNear—southern location near greenhouses (orange filled squares); SFar—southern location far from greenhouses (orange empty squares); B. lucorum—outgroup species (black crosses). Males (M), potential escapees (red stars) and potential hybrids (red rectangles) found in our study are also indicated