These are cocoons from eggs that a friend of mine sent me last season. They are a variety of Bombyx mori, the classic silkworm – but they throw
There are some classic white cocoons mixed in here, along with the cocoons from this brood – you can see the really bright white in the middle and bottom right. The white cocoons from this strain are a slightly creamy white, and have a distinct constriction around the middle.
I’ve separated them for color, and I’m breeding to see if I can get brighter shades of them by selective breeding.
These are the peachiest ones. The color has a lot of gold to it, but there’s a rosy pink shade too. They’re a neat complicated color.
These are the gold shade. The colors are on a continuum, so it was kind of arbitrary where I decided to call it “gold” – but we’ll see if I can get a strain that will tend to more yellow through breeding.
For some reason, the only shot that I could get that shows the color of these two together, is in the ziplok bags. Putting them in piles on a towel, on the counter, etc., I kept getting weird color problems, focus issues, etc. Anyway, you can see what the colors look like, and how the range goes.
A close up on the peach ones.
The silk of these cocoons will be colored on the reel, but will lose its color after degumming to yield white silk; the color is all in the sericin. I’m working on a fermentation degumming that will leave some of the color on them.