Bombylius discolor/Andrena flavipes

On a similar subject to that preceding, these are some things to look out for in the next month on the Gower coast.
The Dotted Beefly, Bombylius discolor is not uncommon on the coast, for its main host appears to be the mining bee, Andrena flavipes.
Otherwise it is very uncommon throughout the rest of the British Isles.
Gravid females coat their eggs in sand and flick their eggs into the nests of these mining bees, where the larvae develop to parasitise the bees or their larvae.
They are easily distinguished from the very common B. major, which also occurs here, by the obvious spots on the wings (though a photo may be needed for this)

A. flavipes is one of the earlier mining bees around and may be located on some of the few flowers available in March, such as Draba aizoides, a very rare speciality of the Gower coast. These photos were taken around this time last year above Ramsgrove, Rhossili, when we had our 'Summer!'
However, I am reliably corrected that this bee on the Draba is Lasioglossum calceatum, another early ground-nesting solitary bee which may also be parasitised by the Beefly.