Which feature distinguishes the tail of a vinegaroon from that of a true scorpion?

Answer

It is a long, flexible, sensory flagellum

The tail is a primary morphological distinction between the vinegaroon and the true scorpion. A true scorpion possesses a post-abdomen that terminates in a telson, which houses a stinger used for injecting venom. In contrast, the vinegaroon features a flagellum, which is a long, thin, flexible, and segmented whip-like appendage. This structure contains no stinging or venomous apparatus at all. Instead, it serves an entirely different purpose, acting as a sensory device to probe the environment and compensate for the creature's limited vision.

Which feature distinguishes the tail of a vinegaroon from that of a true scorpion?
appearancearachnidanatomycharacteristicVinegaroon