Wight Bumblees: Bombylius discolor.

Friday 1 April 2016

Bombylius discolor.

Of course not a bee, but the Dotted Bee-fly Bombylius discolor has a life cycle that is intertwined with that of the solitary bee.As with the more common Dark-edged Bee-fly the female scatters her eggs close to the nesting hole of the solitary bee.The larvae then find their way into the bees burrow where they will develop and finally take to the wing.It is unclear which particular species of bee is used but most probably one of the Andrena species such as Andrena falvipes.

The Dotted Bee-fly has a very limited distribution in the UK and the Isle of Wight is a stronghold for this species which is classified as Nationally Scarce in Great Britain.

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In the UK there are twenty four species of bumblebee but only eight are commonly found in most places.Bumblebees occupy a variety of habitats and most of us should be able to attract them to our gardens if we have the right kinds of flowering plants.

On the Isle of Wight eleven species have been recorded including the eight ommon ones which are Tree,Garden,Heath,Red-tailed,White-tailed,Common Carder,Early,and Buff-tailed.There are also records of three much less encountered species,the Field Cuckoo,the Vestal Cuckoo, and the Hill Cuckoo.

These latter three are parasitic bumblebees that lay their eggs in other species nests and then kill the resident queen.The occupants of the nest then rear the cuckoos' offspring unaware that it is not their own species.

There are over two hundred species of solitary bee in the UK and most can be very difficult to tell apart.

They are so named because they do not live in colonies, unlike bumblebees and honeybees.Their nests range from hollow plant stems to holes in cliffs,walls,and in the ground.

All solitary bees are first class pollinators and should be made welcome in our gardens.

Title Photo

Friday 1 April 2016

Bombylius discolor.

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