Which region of the United Kingdom serves as the primary stronghold for the Bombus vestalis population?

Answer

Central and southern England

The distribution of the Bombus vestalis in the United Kingdom is strongly correlated with warmer, more temperate conditions. Observations and survey data consistently place this species as being common throughout central and southern England. As one moves further north, the prevalence of this species drops significantly. The climatic conditions and seasonality in these southern latitudes are better suited for the hibernation survival and the successful emergence of the queen, as well as supporting the robust populations of the host species required for the parasite to thrive.

Which region of the United Kingdom serves as the primary stronghold for the Bombus vestalis population?
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