Reproduction in ants 🐜 just keeps blowing my mind 🤯
But this here is the crown for sure... for now.
www.nature.com/articles/s41...
(go also check out obligate chimerism, social chromosomes, clonal production of females and males, and much more...)

One mother for two species via obligate cross-species cloning in ants - Nature
In a case of obligate cross-species cloning, female ants of Messor ibericus need to clone males of Messor structor to obtain sperm for producing the worker caste, resulting in males from the same moth...