On instinct alone you might be dealing with 2-3 separate parasites. You mentioned earlier in your post about a "hair-like" parasite; there is this wasp/bee thing, and the period parasite.
From what I know about bees and wasps their nesting habits don't involve laying something on humans like other parasitic insects. If this one does -- it would be a first that I've ever heard of!
There are pepper or period-type (.) parasites. I've read many stories about them and they could be identified as a anthropoid that burrows into the skin. If this is the case, then it might follow with you swimming in the lake.