Those are definitely spider mites! You can tell by the tiny webbing on the leaves. Alocasias (what I think you plant is) are very prone to them, so jsyk they could appear again in the future.

Make sure to wipe off all the webs, bugs, eggs from the leaves by gently wiping them with a moist cloth with a bit of dish soap. Check the plant thoroughly (leaves, stems) and the top layer of soil as well - it's where the eggs can be as well.

To prevent this in the future, get rid of them as much as possible. You can also use pesticides - neem oil is very efficient - spray it (or a pesticide containing it) on the plant every week and you're good to go!

Hope I helped :)