Phrynus marginemaculatus, simply known as spotted tailless whip scorpion is a species of amblypygid found in southern Florida, the Bahamas, Cuba, and Hispaniola.

It has eight legs, of which six are used for walking and the first two are employed as sensory organs for detecting prey and navigating their environment.

P. marginemaculatus engage in agonistic interactions, where opponents use a series of displays.

[2] To reproduce, the male and female P. marginemaculatus by exhibiting ritualized displays in a stereotyped sequence.

These develop over a three-month period, and after hatching the female will then carry the first instars on her back for about ten days until they molt.