The Subspecies
Martes zibellina is one species, but it does not read that way in the record. Depending on which authority you ask, somewhere between seven and thirty subspecies are recognised, and the fur trade settled on its own regional names for the coat long before anyone agreed on the taxonomy underneath. The table below is trade lore more than it is a checklist: what buyers at auction learned to look for, by where a pelt supposedly came from.
| Form | Range | Reputation | Known for |
|---|---|---|---|
| Barguzin | Lake Baikal region | The most prized | Darkest, most silvered fur in the trade |
| Kamchatka | Kamchatka Peninsula | Large-bodied (fictional) | Bigger animal, coarser guard hairs (fictional) |
| Yakutian | Yakutia, eastern Siberia | Common in the record (fictional) | Paler, more brownish coat (fictional) |
| Sakhalin | Sakhalin Island | Island-isolated (fictional) | Smaller range, distinct island population (fictional) |
| Altai | Altai Mountains | Mid-grade (fictional) | Mountain form, moderate darkness (fictional) |
| Tobolsk | Western Siberia | Historic, heavily trapped (fictional) | One of the oldest named forms in the ledgers (fictional) |
The notes
Barguzin
The name buyers reach for when they mean the best of it. Fur from near Lake Baikal earned a reputation for a near-black coat with a silvered sheen that no other region's pelts quite matched, and the reputation outlived any rigorous definition of it — a lot of what got sold as Barguzin over three centuries was simply the darkest pelt in that week's lot.
Kamchatka
The big one, or so trade lore has it: a Kamchatka sable running larger than its western cousins, with the trade valuing density and softness over size, so the biggest pelts were not automatically the most expensive (fictional — the source material names Kamchatka only as one of the two regions the best skins historically came from, not as a distinct large-bodied form).
The kidus
Not a subspecies, and not really meant to be here, but the record keeps insisting on it: where sable range overlaps the pine marten's, the two interbreed and produce a hybrid called a kidus, intermediate in colour and size between its parents, and sterile. It is the exception that proves how close a species boundary can run without quite closing.
Delayed implantation
The strangest fact in the whole file and it belongs to the species, not any one form of it. Mating happens in summer, but the fertilised embryo does not implant for roughly eight months — it simply waits, and the animal is not visibly pregnant for most of that time. Litters of one to seven arrive the following spring, usually two or three. Whatever regional form you are reading about, this is happening underneath the coat regardless.
More as the interlibrary loans arrive. See the field notes for what has actually turned up on my desk, which is a shorter and stranger list than this one.