Solukokoisia

Solukokoisia is a fictional taxon used in speculative biology and science fiction to describe cell-sized organisms that exist in hypothetical ecosystems. The term is not recognized by any taxonomic authority and there are no verified records of living Solukokoisia.

Name and etymology: The word combines solus/solu (cell in Finnish) and koko = size, indicating the cell-sized nature; the suffix -ia is common for taxon names.

Description: In fictional treatments, Solukokoisia are ultra-small, typically a few micrometers in diameter; they show simple plasmalemma and are described as lacking complex organelles. Some portrayals assign them minimal genetic material enclosed by a membrane, with metabolic pathways ranging from reduced chemoautotrophy to opportunistic heterotrophy. In others, they are depicted as remnants of early life or as synthetic constructs. Reproduction is sometimes described as simple division or budding; motility varies from passive drift to membrane-based gliding in a viscous medium.

Ecology: They are portrayed as occupying microhabitats such as porous minerals, thin films on minerals, or aquatic microenvironments; their interactions with other organisms range from symbiotic to parasitic in some fiction, though in fiction their ecological roles are often exploratory rather than established.

Significance: Solukokoisia are used in thought experiments on minimal life forms, cellular constraints, and the potential diversity of life in extreme or non-terrestrial environments. They appear in educational exercises, speculative biology forums, and certain science-fiction contexts.