Two more hoverflies from Randall's Farm:
Xylota segnis will often be seen sunbathing and running over logs or Bramble leaves. This one is favouring us with a view of the red patches on the tergites which are usually obscured by the folded wings.
Here, you can just make out the spines that are present at the top of the hind femur in the males.
A big black hoverfly with dark wings, especially if it happens to hold them in 'delta-wing' mode (not this one, though), is likely to be
Cheilosia variabilis.
Xylota segnis will often be seen sunbathing and running over logs or Bramble leaves. This one is favouring us with a view of the red patches on the tergites which are usually obscured by the folded wings. 
Here, you can just make out the spines that are present at the top of the hind femur in the males.
A big black hoverfly with dark wings, especially if it happens to hold them in 'delta-wing' mode (not this one, though), is likely to be Cheilosia variabilis.
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