"Organism has evolved elegant survival mechanism. Decentralized nervous system. Upon death, remains become two lesser creatures.
"
The mitoscarab is an arthropod-like lifeform native to Nelyth, discovered by Abathur. Its unique ability to split into two separate organisms thanks to a decentralized nervous system was useful for zerg banelings to assimilate, creating the splitter strain.
There are three versions of the mitoscarab. They have an identical appearance except for size.
References[]
Blizzard Entertainment. StarCraft II: Heart of the Swarm. (Activision Blizzard). PC. Mission: Heart of the Swarm, Baneling Evolution (in English). 2013-03-12.