Mycetarotes parallelus - "Fungus-Growing Ant"
Mycetarotes parallelus is a fascinating fungus-growing ant species, notable for its unique method of cultivating a fungal garden for food. These ants are part of the 'lower attines,' a group of fungus-growing ants found exclusively in the Neotropics. Workers are monomorphic, meaning they are all roughly the same size and appearance, and can be identified by specific features like tridentate occipital corners and subparallel frontal carinae. Their nests are typically inconspicuous, subterranean structures with a single chamber, containing a relatively small fungus garden. Unlike some other species in its genus, M. parallelus is more adaptable, thriving in various open, secondary, and disturbed habitats.
- Difficulty: Medium
- Origin & Habitat: Neotropical Region (South America, including Brazil, Argentina, Colombia, French Guiana, Paraguay) in Open habitats, gallery forests, secondary forests, disturbed habitats, oil palm plantations, cerrado.
- Colony Type: Monogyne (single queen), claustral (queen seals herself in) founding.
- Size & Growth:
- Queen: Not specified
- Worker: Not specified
- Colony: Small (hundreds of individuals, typically 100-1000, with some records averaging around 357 workers). Slow to Medium (initial growth is slow, but accelerates once the colony is established) growth.
- Antkeeping:
- Temperature: Maintain a stable temperature, ideally between 22-26°C. Avoid significant fluctuations, as consistent warmth supports fungus garden health and brood development..
- Humidity: High humidity is crucial for the fungus garden. Aim for 80-90% humidity within the fungus chamber. The outworld can be slightly lower, but the nest area must remain consistently moist to prevent the fungus from drying out and dying..
- Diapause: Not required. Not specified at Not specified.
- Nesting: Requires a formicarium designed to maintain high, stable humidity and provide space for a fungus garden. Acrylic or glass nests with good hydration systems are suitable, but special consideration must be given to preventing mold. Naturalistic setups with a deep substrate for subterranean nesting are ideal..
- Behavior: Low (primarily defensive if disturbed, not typically aggressive towards handler) aggressiveness.
- Common Issues: Fungus garden dying (due to incorrect humidity, temperature, or contamination), Mold in nest (due to poor ventilation or excess organic waste), Colony stalling (often related to fungus garden health or queen stress), Mites (can be introduced with unsterilized substrate), Humidity fluctuations (critical for fungus health), Queen stress (especially during founding).
One of the most critical aspects of keeping Mycetarotes parallelus is maintaining the health of their fungus garden. This fungus is their primary food source, both for the adult ants and especially for the larvae, so its well-being is paramount. Providing the correct substrate and a consistent high humidity level within the nest is non-negotiable. Over-humidification, however, can lead to mold, which is detrimental, so striking the right balance with good ventilation is key for a thriving fungus garden.
Their diet primarily consists of the cultivated fungus. In the wild, these ants use various organic materials as substrate for their fungus, including dead vegetation, seeds, flowers, fruits, and even insect corpses and feces collected near their nests. For antkeepers, providing appropriate, sterilized organic matter for the fungus to grow on is essential. This could include carefully selected, pesticide-free plant material or specialized fungus-growing ant substrates available from reputable suppliers.
Mycetarotes parallelus colonies are typically on the smaller side compared to some other ant species, often housing a few hundred workers. This makes them a more manageable species for antkeepers who are looking to get into fungus-growing ants without committing to a massive colony. However, their smaller size also means they can be more sensitive to environmental changes and disturbances, requiring careful attention to their setup and overall care.
Founding a Mycetarotes parallelus colony can be particularly challenging. Like many claustral species, a new queen will seal herself in a chamber to raise her first brood. During this crucial period, minimal disturbance is vital to prevent stress that could lead to the queen abandoning her efforts or even dying. Patience is key, as initial growth is slow, and it takes time for the colony to develop a stable fungus garden and a decent number of workers.
Given their specialized care requirements, especially concerning the fungus garden, Mycetarotes parallelus are generally recommended for intermediate to experienced antkeepers. Beginners might find the challenges of maintaining the delicate balance of humidity, substrate, and fungus health a bit overwhelming. Thorough research and preparation before acquiring a colony are strongly advised to ensure the best possible chance of success with these unique and rewarding ants.
