Crematogaster scutellaris establish independent monogynous colonies, but with the possibility of oligogyny (multiple queens are accepted by the workers in the colony, but the queens are aggressive among them).
They usually build their colonies mainly in stumps and fallen logs or dead branches. The nest are made with a mixture of chewed wood and humus. Between March and October workers collect and carry mainly sugary liquid substances and solid materials (remains of arthropods, small insects, etc. ).
This species is very prolific. The larvae hatch primarily in September and overwinter in the second stage, from November to February at about 10 °C. The following spring the third instar larvae develop, pupating in the summer. By mid to late summer the worker appear, while sexed individuals appear in late August.