In that case the article refers to the ant birthing members of another species, the word 'clone' is a bit weird here, but it is totally different from humands cloning cows, as the cloned cow is still birthed by a cow. The other species 'cloned' by the and is not a cloned individual, just another member of that species, but birthed by another, i suppose "researchers discover xenoparity in hairy ants" isn't very good science communication