Camponotus take a long time to develop. If you take a look at the care sheets for this species, pupae to worker time is estimated to be 18 to 25 days. I know for my Camponotus chromaiodes it took about 25 days for the first workers to develop after the first pupae appeared. Overall it took around 65 days (give or take a day or two) from first egg to first worker for me. Just be patient.
Current Colonies
1 x Camponotus nearcticus (Monogynous), 1 x Crematogaster cerasi (Monogynous), 1 x Formica cf. subsericea (Polygynous Two-Queen), 1 x Formica cf. pallidefulva (Monogynous, single worker),
1 x Lasius cf. americanus (Pleometrotic Founding, now Monogynous), 1 x Tetramorium immigrans (Monogynous)
Current Founding Units
1 x Formica cf. subsericea (Monogynous)
Up-To-Date as of 9/15/2020