Hoverfly And ???

The Hoverfly is Helophilius pendulus, also known as 'The Footballer' (because of its stripy thorax) and 'The Sunfly' because of its preference for sunny days, its scientific name strangely means 'Dangling Marsh Lover', but ......... What the heck is that little white creature the fly is looking at?????
I saw the Hoverfly on a leaf near Carr Mill Dam and quickly took the picture before it flew off. It was only when I checked the picture, when I got home, that I saw the tiny creature it was looking at, (at least I think it's a tiny creature, it certainly looks like one) but I haven't a clue what it might be. Not the best sharpness but not bad at all considering it was a fast shot taken with the Oly 75-300ii focussed on the fly. I really hope somebody can tell me what the white creature is, it is very tiny, I'm guessing only about 1cm long comparing it to the fly.

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