They built no comb. Just that tiny bit?
Usually, if there is any real, decent sized swarm, they build comb immediately. They completely fill up my swarm traps with comb in less than two weeks.
And why I ask for more information and pictures. Wondering if The Wax Moths might have eaten up the new comb as well, and this pictured is all of the new comb that was left?
I can only speak from my own personal experience. I have never collected a swarm which was not 'fast to build comb, no matter the size of the swarm, even a late season swarm. Even an occasional odd swarm, collected in a time of summer with little natural resources available, that did not build comb and fast. I always suposed they filled up on enough honey for a quick and needed comb building supply before leaving inorder to begin 'setting up housekeeping' ASAP
Those described which I have personally collected during such a time built comb fast.
But: to aid them I also fed ASAP, since the Spring Flow had passed. Each swarm survived just fine. But in fairness, without my aid of feed, they might have very well starved (maybe 100 percent of them
?), without the needed natural resources coming in... A late season swarm also needs pollen or a pollen substitute in the development of bees...