Mystrium camillae is a monogynous ant species with colonies of up to 500 workers. They have an average development speed and the queen and workers range in size from 7-9 mm and 3-6 mm respectively. They have an orange-brown coloration and their diet consists of feeding insects and sweet fruits. They thrive in a humidity range of 60-70% in the arena and 60-80% in the nest, with temperatures of 24-30 °C in the arena and 24-26 °C in the nest.