Ucalegon, the female giant millipede, has been nesting deep in the tank of earth (and presumably laying eggs) for the last week or so, so I haven't seen her. Melchizedek, the male, has been appearing and disappearing. I don't know whether he's been actually bringing her food or what. Anyway, today I saw the middle portion of Melchizedek curled around (he often sleeps with his head and tail buried) and then I realised that the curl in the middle was a different colour. So Ucalegon is back and sleeping cuddled up to Melchizedek.