Voidworms
Voidworms in the Stellaris encyclopedia: Voidworms are parasitic organisms that must deposit spores on inhabited worlds with suitable biomass in order to reproduce. Mature individuals form mating trios, known as "Troikas", and will construct nests near black holes to shelter and raise their young.
Voidworms in the game's words
The encyclopedia entry as the game shows it in its tooltips; underlined words open their own entry or page here.
Voidworms are parasitic organisms that must deposit spores on inhabited worlds with suitable biomass in order to reproduce. Mature individuals form mating trios, known as "Troikas", and will construct nests near black holes to shelter and raise their young.
Source: common/game_concepts (concept_voidworms) and localisation/english, Stellaris Cygnus v4.5.2 (9776).