Tiny flying bugs on horse?

[HowenEdward]

Hey, I am usually in CR so a new face here

I went up to the feild to say hello to my pony, only to be faced by a pony crawling with little white bugs on the haunches, wither and spine mostly.
I grabbed my louse powder and covered him but I realised they could fly so he had a mist of flying little things round him.

He has recently been life threateningly ill but is back home and is happy once again so maybe his immune system is low and they have just come out? He suffers with a little dandruff on his dock and wither but is manageable. He is a NF bay and has a lovely summer coat so I don't want this to be ruined.

He wears a fly mask and sometimes a fly sheet.

These little things are almost microscopic and silver with silver wings....
What could they be? (sorry no photos yet) Would really like to know so I can provide treatment soon

Thanks xx

 

[HowenEdward]

Bump Bump Bump....

Can't afford this to drop down the pages Please Help!!

 

[Supertrooper]

No idea what they could be but lots of bugs will be out now after the rain and with the sun being out.

My suggestion would be to put fly rug and mask on and wipe/spray any exposed areas down with fly spray xx

 

[asommerville]

Sound like midges.....cover him in fly spray and fly rug