The #brood of my #Lasius #niger (#Formicinae) #colonyfounding setup is still the result of multiple founding queens (#pleometrosis), even though the colony will later become monogynous. Various stages are visible: eggs, young larvae, and a pupal #cocoon. The cocoon is a #plesiomorphic (ancestral) trait in ants; it has been lost through convergent evolution on several occasions, e.g., in the #Myrmicinae.
©#StefanFWirth
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© S.F.Wirth, 2026