As I posted in your other thread, a general guide is that fast moving isn't a plant pest whereas slow moving may be. Beyond that, allow the potting mix to dry off a tad more.

It looks like the larve of the swallowtail butterfly. These are very common on citrus plants. Pick off any you see as they love citrus leaves. If you have a large amount a pesticide is in order to attain control.The swallowtail caterpiller is the 7th picture down in the link below. Here is a link that might be useful: Caterpiller pictures

lets see... its a leaf miner ... its citrus.. compare to citrus leaf miner at link ... ken Here is a link that might be useful: link

Well for starters they are beetles. The magnification is way too low for a decent identification, but I'll hazard a guess: Given their size, I'm guessing they are fungal feeding deadwood specialists, such as Cisidae (there isn't a common name to my knowledge). These are not wood borers per se, but feed on fungi growing on deadwood or untreated wood. How to get rid of them ... well, I wouldn't want to unless they are attacking the structure of your premises. You might want to keep them out though (just so they aren't a nuisance and that you don't have to keep cleaning up dead ones that die trying to get back out). First step might be to get finer mesh on your windows ... but then I don't know what grade mesh you have right now.