please help

[bedrockdave]

 ???without a photo can anyone identify a pest that has destroyed my onions and is now all over some of mt potatoes. it is white ,about  1 to 2mm long with lots of legs like a centipede and two 'feelers' on the top of its head. they ate all the roots on my onions and are everywhere over my pots :(.
if you can identify them will it be safe to plant on the patch next year or would it be better left to rest?

[bedrockdave]

[Tee Gee]

Sounds like onion root fly to me but the mention that it is on your potatoes as well throws me a bit  ???

Have a look in here;http://www.oisat.org/pests/pests__insect_mite/flies/onion_fly/pest_information.html

[bedrockdave]

I thought it was onion fly at first but there larvae are maggots and these are like minute white earwigs, just been to a garden centre and they were baffeled too, they suggested thrips but there lavae is brown,thanks though tee gee