Gosh Jack, I just looked up 'sandflies' and they're pretty dangerous aren't they? They're vectors for all kinds of nasties.

I've been bitten by mozzies at high noon, while wandering around African markets. They do appear in greater numbers after dark, but they don't disappear completely during the day. They really love me.

Anti-malarials are essential, it's incredibly foolish to think you can get away with it.

I've been very glad of a 'moustiquaire' over the bed in the tropics. You have to make sure they're correctly arranged, and that one doesn't sleep touching the netting (the mozzies bite through it!) Also, in the morning one should wind it round and round then make a knot, so no mozzies can get inside ready for night time.