The Solen are a race of giant ants made intelligent by the Meer's failed Decay spell. They have recently started appearing from their underground home.
The Black Solen Warrior is the fighter of the Black Solen race and is far more dangerous than the lowly workers. When it is out of melee attack range it will spit a dangerous acid at its attacker.
The Acid will do a little damage, but most of it will end up on the ground, where it is very easy to step in. Stepping in one of the acid pools will cause you to lose a massive amount of health very fast, but luckily they will seep into the ground and disappear in a few seconds.
When the Solen Warrior is badly damaged its Acid Sac will burst, this will cause it to stop spitting and the acid will start spilling out on the ground around it. Standing near it when that happens is very bad for your health.
The black variety of the Solen can currently only be found in Felucca.