Fireworms, generally called Bristleworms by aquarists, can cause painful stings. After a fresh look, there is finally evidence that the fire worms have a venom in their bristles.
In taxonomy, however, spots, simple and otherwise can assume an importance that can range from trivial to exceptional. This is simply because spots that are in a consistent position can be, and often have been, used as taxonomic characters.
I initially thought: “Wow!! Isn’t that an interesting hypothesis?”
My students might be forgiven for thinking pycnogonids are comprised only of legs and the hinges fastening those legs together.
As it turned out there was a very good reason that no clams with shells matching the description of Julia were ever collected. That singular reason is that Julia exquisita and all of its relatives having a similar shell are not clams, they are snails!