Why Do Spiders Turn White When They Die?

If you are unsure about what causes spiders to turn white when they die, there are a few different things to keep in mind. Some of the most common reasons include:

Dehydration. If your spider has been in a container for a long time, it may begin to experience dehydration. It is important to keep water available at all times. If your spider’s water container is too small, it will not get the water it needs. Keeping a large open dish of water handy can help.

Moults. If a spider is infected with mould, it will begin to produce yellow plumes on its internal organs. If you notice these white or yellow marks on your spider, you should remove it from its environment and rehouse it in a clean container.

The fungus, entomopathogenic fungus, is harmless to humans, but can be dangerous to other invertebrates. It is often found in areas where there is a lot of moisture. It quickly infects other spiders. The spores are released in the environment. Depending on the species, a fungus can be present in the ear canals or in the lung openings.

The spider will then moult prematurely. If you see your spider’s abdomen splayed out, it is probably already dead. The fungus will eat away at the spider’s body. It will eventually seal its stump, preventing any blood loss.

It is also possible that your spider has chelicerae paralysis. If this occurs, the spider cannot clean itself and will not place its palps on the floor. You should either remove the spider from the room or euthanize it.