List of all bee species recorded in the study area per year (Y: yes; N: no).

Bolded species are introduced to the study region. Missing introduced cavity-nesting bees known from the region included: Anthidium oblongatum (Illiger), Hoplitis anthocopoides (Schenck), and Megachile ericetorum Mitchell. * M. centuncularis status is not clear, with Giles and Ascher (2006) denoting the species as introduced. + denotes species that are cleptoparasites. List of all bee species recorded in the study area per year (Y: yes; N: no).