Meinertellidae

The Meinertellidae, commonly known as rock bristletails, is a small family of basally diverging insects belonging to the order Archaeognatha. These insects can be distinguished from members of the other Archaeognatha family, Machilidae, by the lack of scales at the base of the legs and antennae, head, and palps; along with possession of small abdominal sternites protruding slightly between the coxal plates. They can also be distinguished by patches of reddish to violet-brown hypodermal pigment on the appendages.