Answering my own question here - apparently multiple virgin queens in a hive can all fight and kill each other and leave themselves queenless.
Or the one to emerge first kills all of the others, then doesn’t make it back from a mating flight. Can and does happen. 
I still didn’t dare look into my split. By all accounts they should have a queen. No idea how many got killed in the process.
All seems quiet.
That would mean introducing another brood frame and start over?
Greeting,
Ain’t you having fun yet ! Don’t panic … Maybe you have a queen n maybe not. If in question I’d find the best mixed brood frame from eggs to capped (eggs for sure) n add the frame. If you have a new Queen … it’s no big deal … you have more future workers. And if you are really without her
Magesty you’ll be ahead of the Game ! Heck ! I play this game all the time
… it’s just part of Beekeeping … yaaaah … isn’t it GREAT ?!
Good luck
n keep on keeping on !
Geralld
It’s just a new wonderful day in Beekeeping 


. Buzz Buzz !
You could certainly do that, if you wanted them to raise their own queen. Or you could introduce a (e.g. purchased) mated queen. Or if you have several splits, you could combine the queenless split with a queen-right split, to give them a numbers boost. ![]()
Hi Dawn - you would use a sheet of newspaper to do this I suppose? Queenright hive underneath?
That is how I would do it, yes. Then move them into a full size hive once everything is settled. 
Had to be away for a week to work at a retreat. Prevented me looking into the split too early and disturb anything.
Looked in today, on day 28 after the split. It was overcast and this hive is under a tree as well, but saw larvae I reckon at 6 to 8 days old. Didn’t look for eggs, wouldn’t have been able to see them without sunlight, but there must be a queen. Hooray!
My first real split.
Now I’m curious what drones she mated with and look forward to see what Colours her daughters will show over the coming months. Her mother is Italian.
Thanks to all forum members for encouragement and advice.
On another note, wow, this spring really brings in the nectar. Put a new flow super on two 8 frame nucs 3 weeks ago and they are already capping.
However, for my next harvests I will take the frames out to really see how much honey is leaking. Got me all worried now.
It’s very obvious where there are wet and dry cappings, so will check them all.
You have done well…I have had no luck with mine this year. Both turned out to have unmated queens…and the problem there is that they will not make any more queen cells with that unmated queen still in the hive. If she stays there long enough she will apparently become a drone layer - so even if I see eggs and larvae - they will turn into drones.
Well, I can’t be sure yet if I have drone or worker larvae. It occurred to me as a hot idea just after I was so jubilant about seeing larvae.
Dan, just give them another frame with eggs and see if they build queen cells.
Easy check.
I assume down your way you have to be quick smart earlier than us Northerners, because your seasons are more defined. I mean, your winter would be freezing and you couldn’t work with your bees that time. So your spring/summer would be rather short.
I think here is just about always spring/summer, except for 2 months of the year, when on a night or two we may hit a positive single digit on the Celsius scale.
But you got apple blossoms.