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The Social Structure of Discoid Roaches

Updated: Nov 1, 2023

In our continued education series, let's take a look at the Social Structure of Discoid Roaches! While things may look pretty random when you peek into your bin, upon prolonged observation, you'll find that Discoids Roach Colonies have a pretty complex Social community!

Healthy Discoid Colony

(Image courtesy of George King)

Discoid roaches (Blaberus discoidales) exhibit a hierarchical and social structure within their colonies. This social structure consists of different castes or groups of roaches that play specific roles in the colony's functioning. Here's an overview of the typical social structure of discoid roaches:


  • Adult Females: These are the reproductive females in the colony. They are the largest and most dominant individuals and play a crucial role in reproduction. Adult females are responsible for producing and protecting the egg sacs, and they may aggressively defend their offspring. Adult Females have wings but can not fly.

  • Adult Males: Adult males are typically skinnier than females and also have wings, however, Discoids are not constructed to fly, and the wings are primarily used to dance for the females, a signal that the male is ready for breeding. Their primary role is to mate with the females. After mating, males may not have a long life expectancy, especially if the colony has a limited food supply.


  • Nymphs: Nymphs are immature roaches that have not yet reached adulthood. They go through several molting stages (instars) before becoming adults. Nymphs help with colony maintenance, such as foraging for food and grooming.

Egg Sacs:

  • Egg Sacs: These are the offspring of adult females. Egg sacs contain roach eggs, and adult females typically guard and protect them until the nymphs hatch. The number of eggs in an egg sac can vary, and it depends on factors like the female's age and nutrition and husbandry.

Hierarchy and Dominance:

  • Within the colony, there is often a dominance hierarchy among adult females. The most dominant female typically has access to the best resources and may have priority when choosing breeding partners. Dominance is established through interactions such as aggressive behavior and pheromone signaling.

Social Interactions:

  • Discoid roaches engage in various social interactions, including grooming each other, aggregating in groups, and communicating through chemical signals (pheromones). Social behaviors are important for maintaining cohesion within the colony.

Colony Size and Dynamics:

  • The size of a discoid roach colony can vary, with larger colonies having more complex social structures. In larger colonies, multiple adult females may coexist, each with her own territory and egg sacs.

  • Colonies are typically housed in suitable enclosures that provide hiding places, climbing structures, and a stable environment to support their social structure.

It's important to note that the social structure of discoid roaches can vary depending on factors such as colony size, environmental conditions, and genetics. Understanding their social dynamics is essential for those who keep discoid roaches as pets or for breeding purposes, as it can help ensure their well-being and successful reproduction.

We hope you enjoyed learning a little about the Social Structure of Discoid Colonies :)


Mel & Chris

Luna Roaches

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3 comentarios

Miembro desconocido
13 oct 2023

I think that also explains why wings are chewed.

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Miembro desconocido
01 nov 2023
Contestando a

Can't stop love 😁

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