75% of the most threatened bee species have been lost to some of the region's counties.
A report by nature conservation charity Buglife says the large garden bumblebee (Bombus ruderatus) is still found in Gloucestershire and Somerset, but over the past 50 years has disappeared from Dorset and the far South West.
The increased use of pesticides and unpredictable weather have contributed to their decline.
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Police have this afternoon confirmed they have arrested two people in connection with a shooting in Somerset last night
More than 2,000 young people are gathering on Dartmoor today ready to take part in the Ten Tors challenge.
A manhunt is underway after two men were shot - one fatally - at a residential site on Thursday evening on 5 May.