I spent a week at the ill-fated (and now defunct) Bayman Bay Club, Guanaja, Bay Islands, Honduras. The resort hadn't yet succumbed to the horror-story conditions that were written about later in Undercurrent and was actually quite lovely. However, I was eaten alive by the dread no see ums. There was hardly a moment that I wasn't scratching (resisting was *not* an option). I'd heard about their existance in advance and came well armed with deet, "Skin-So-Soft" (the fabled Avon product) and something called Cactus Juice. None of the three seemed to have much affect, though the Cactus Juice seemed the best of the lot.
As Scuba Jenny said, we do have them here in South Florida as well and they can ruin an 'al fresco' evening. As seems to be the case with mosquitos, I think each person's body chemistry determines their attractiveness to the little beasts.
By the way, goodnight411, we share a birth date (happy belated!)
Best Regards,