Mystrium camillae

• Habitat & nest structure
  These ants tend to live in forested tropical and subtropical habitats. They are found under leaf litter, in rotting wood, under stones, and sometimes in soil. Their nests are relatively hidden and dark, with galleries rather than open formicaria.

• Feeding / foraging behaviour
  They are predators, especially of small arthropods; centipedes are among their prey. Their snap-jaw is used to stun prey. In addition, they exhibit a peculiar form of feeding involving larval haemolymph: queens (and possibly other reproductives) gently pierce larvae to feed off their haemolymph, while not killing them, using these larvae somewhat like a living food reservoir.

• Colony size & social structure
  Colonies are usually fairly small, with a limited number of workers and a queen. Workers are polymorphic, meaning there are different sizes/forms among the worker caste. The reproductive structure is somewhat primitive: reproductives may include queens and/or wingless reproductives depending on colony.

• Defence & special traits
  The standout trait is the snap-jaw mechanism: the ants press their long mandibles together, storing energy until one mandible slips over the other, releasing the energy in a lightning-fast snap. This is both a hunting tool and defence. Also the larval haemolymph feeding is unusual and almost vampiric-sounding, giving these ants the common name Dracula Ants.

If you’re thinking about adding Mystrium camillae to your collection, here’s what to consider and expect:

You can typically purchase a small colony including a queen (or reproductive) with workers. Because of their unusual behaviour and habitat needs, they are best for keepers who have some experience. Their slow growth and small size mean they might mature more slowly and require more precise conditions than more common ants.

When buying from us, you will receive healthy specimens, properly acclimatized stock, and support/advice to set up the right environment.

• Housing
  Use a naturalistic setup: dark nesting galleries or substrate, wood, stones, leaf litter, so that ants can hide. Avoid too bright or open spaces. The nest should maintain darkness and humidity.

• Temperature & humidity
  Maintain tropical-warm conditions: around 22-26 °C works well. High humidity in nest galleries is important, but also allow some drier zones to prevent constant mold growth.

• Feeding
  Offer live or freshly killed small arthropods (such as small insects or centipedes). Also supply some sugar sources (honey or sugar water) for energy. Note the haemolymph feeding behaviour: larvae will be used as internal resources, so keeping larvae healthy is important.

• Colony growth & patience
  Development is slow. Expect gradual growth; worker numbers increase over time. Reproduction may be limited or slow. Do not expect large numbers quickly.

• Maintenance & hygiene
  Remove uneaten prey to prevent decay and mold. Ensure substrate is not waterlogged. Good ventilation or small dry areas help balance moisture. Keeping the nest clean and stable is key.

• Handling & observation
  Be careful disturbing the nest: these ants prefer dark hidden spaces. Their snap-jaw can be sensitive; avoid stressing the colony. Observing behaviour (snap jaws, larval haemolymph feeding) can be fascinating, so consider using observation windows or microscopes gently without disturbance.