[2][3] Species of Floridobolus range from 52 to 92 mm (2.0 to 3.6 in) long with 45 to 50 body rings or segments as adults.

The body is not purely cylindrical, but rather is widest around the 12th or 13th rings, and tapers towards the head and telson (rear end).

[2][3] The three species of Floridobolus differ primarily in shape and proportion of the gonopods (male reproductive appendages), and in geographic location, each occurring on different sand ridges running from north to south in Florida.

Floridobolus penneri was described in 1957 by Nell B. Causey based on individuals collected near the Archbold Biological Station.

[5] Its known natural predators include larval Phengodes laticollis (glowworm beetles) and adult Mastigoproctus giganteus (giant whip scorpions).