Hofsteniidae is a family of acoels. This family contains seven species in three genera.
This worm ranges in size from 100 üm for embryos to 500 üm for adults, and exhibits "whole-body regeneration" capability, where entire body parts regenerate when removed from the body. They have a simple nervous system and a bowel sac with no way out.
There are three genera in the family Hofsteniidae.
There are seven species in the family Hofsteniidae.