A Queen-Only Species: The Japanese Ants That Thrive Without Males or Workers.

The Temnothorax kinomurai Ant Species

According to TSN.ua: Discovered in Japan, the ant species Temnothorax kinomurai consists solely of queens that reproduce asexually. This finding challenges long-held assumptions about the essential social hierarchy within ant colonies. An international research team confirmed that T. kinomurai colonies contain no males or worker ants, only reproducing queens. This unusual social structure is a significant departure from the norm for these highly social insects.

Reproduction and Aggressive Behavior

T. kinomurai queens reproduce via parthenogenesis, a rare form of asexual reproduction that allows them to generate offspring without any male genetic contribution. Researchers also documented that these ants invade the colonies of a related species, Temnothorax makora, and kill its queen, demonstrating aggressive, socially parasitic behavior. This parasitic strategy is key to their survival and colony foundation.

Scientists believe T. kinomurai evolved from an ancestor with a socially parasitic lifestyle. Dr. Jürgen Heinze noted that

'T. kinomurai demonstrates a fundamentally novel model of social organization.'

Studying T. kinomurai could help scientists understand how social structures adapt under evolutionary pressure and how such radical changes affect interactions within ecosystems. This queen-only system represents a unique evolutionary experiment in social insect biology.