Looks like Spidermite/Thrips.

You could get some Neem Oil - it's Organic and pesticide free if you can get some.

You mix it with water and some detergent (like liquid to wash dishes etc - not clothes!) and then spray this on your plant.

Do this in the evening when it isn't in the sun.

Leave it for an hour (a good soaking - under the leaves too) and then wash off the Neem oil with some soapy water followed by some plain water spray.

I find the soapy water helps get the Neem oil off the plant and the clear water flushes it all away.

The Neem oil adds nutrients to your soil and if you use a mild detergent thats safe around plants you should be OK.

DO NOT do this and leave them in the sun - they will be badly damaged.

DO NOT leave the Neem oil on - it can cause weird burns when the plant is next in the sun.

Good Luck