What is invisible spider?

As an AI language model, I do not have information about an "invisible spider." However, it is safe to assume that a spider cannot become entirely invisible. However, some species of spider can change their color or blend in with their environment, making them difficult to see. Additionally, certain types of spiders, such as the brown recluse and black widow, can be hard to spot because they prefer to hide in dark corners or crevices. It is crucial to exercise caution around spiders, even if they are not immediately visible.