Common characteristics of Hirudinaria are: 1. Setae & parapodia absent 2. Setae are present but parapodia absent 3. Blood suckers are present

Common characteristics of Hirudinaria are: 1. Setae & parapodia absent 2. Setae are present but parapodia absent 3. Blood suckers are present

Explanation
  • Hirudinaria (leech) has no setae and parapodia.
  • They are blood suckers.