FIGURE 2 in Distribution, phenology and host plants of Danish bees (Hymenoptera, Apoidea)

FIGURE 2. Collection coverage of the Danish UTM-10 squares based on bees collected in Denmark from 1775 to 2014. The symbols indicate whether the species are found only in 1974 or earlier (grey triangles), 1975 or later (circles), or in both periods (black squares).