The Bivisible's first appearance seems to be in the 1920's. The first time in writing about the Bivisible was by Edward Hewitt in his book 'Telling on the Trout' (1926) where he tells why he came up with the pattern:
"Dark colors are more visible to the trout from below than light colors, and, therefore, take more fish under most conditions and are more generally used. They are often, however, more difficult to see on the water than the lighter flies. This is the reason for my favorite design of fly which I call the Bivisible which consists of a palmer-tied brown hackle on the head of which is wound a small wisp of white hackle. The white resting against the brown becomes very visible in most lights to the angler; on the other hand, the trout see the brown hackle from below better than any other color used. This fly is by far the best of any I have yet seen for all species of trout and it is based on a sound physical principle."
What the Bi-Visible imitates, the opinions varies. Art Flick writes about the Bivisibles in his book 'New Streamside Guide' (1969) that it's an imitation of beetles but he isn't sure. In Ray Bergman's book 'Trout' (1938) there's a fly plate and a recipe to tie the Bivisible but no mention about the origins or what it imitates. Here is Hewitt's description of his Bivisible from his 1937 catalogue.
The Bivisible's roots clearly comes from an old pattern called the Palmer. First documented in the 1600s, also in Izaak Walton's 'The Compleat Angler'. The palmer or palmer-worm was already a well-established fly at that time, so it originated much earlier, probably in the 1500s. The tying technique of wrapping a hackle from the hook bend forward to the hook eye, Palmering, is used in a wide variety of wet and dry flies (Woolly Bugger, Elk hair caddis and Stimulator for instance). I found an article about the origins of the Palmer flies in a 1976 issue of Fly Fisherman.
Back in the early 80's all I fished with were Palmers, basically a single shade (brown) version of the bi-visible to catch rudds in the ponds & channels. The Palmer was recommended by the late Dutch (fly) fishing author Kees Ketting. His books & articles were all we had back in the pre-internet days.
My bibles back in the early '80s...





























