The Myrmoteras opalinum ant is a monogynous colony with a size of up to 400 workers. It has a medium development rate and the Queen measures 6-8 mm while the workers measure 5-7 mm. They are brown-orange in color and feed on food insects and sweet fruit. They require a humidity level of 60-70% in the arena and 60-80% in the nest, with a temperature range of 24-30 °C in the arena and 24-26 °C in the socket.