Bothriomyrmex syrius - "Syrian Bothriomyrmex Ant"
Bothriomyrmex syrius is a fascinating ant species known for its unique colony founding strategy. These ants are part of the Dolichoderinae subfamily. Queens are diminutive, and workers are morphologically similar to smaller Tapinoma species. They are generally small ants, making them somewhat challenging to observe in detail without magnification. Their primary distinction in the wild lies in their parasitic nature.
- Difficulty: Medium
- Origin & Habitat: Greece, Israel, Lebanon, Montenegro, Turkey, Egypt, Tunisia in Grasslands, savanna woodlands, mallee forests, lowland rain forests, in soil or rotten wood..
- Colony Type: Monogyne (typically, though founding involves a host queen), temporary parasitic (queen invades a host tapinoma colony) founding.
- Size & Growth:
- Queen: Not specified
- Worker: Not specified
- Colony: Medium (thousands). Medium growth.
- Antkeeping:
- Temperature: Room temperature, around 22-26°C. Provide a slight gradient if possible..
- Humidity: Moderate humidity, 50-70% in the nest. Keep a portion of the nest moist..
- Diapause: Required. 2-3 months at 8-15°C.
- Nesting: Prefers soil or Ytong nests, but can adapt to acrylic setups with a good hydration system. Needs a secure nest to prevent escapes..
- Behavior: Low (towards handler, but high towards host queen during founding) aggressiveness.
- Common Issues: Failure of queen to integrate with host colony, Mold in nest, Humidity fluctuations, Escape due to small size.
A major consideration for keeping Bothriomyrmex syrius is their temporary social parasitic founding strategy. This means a queen won't start a colony on her own in a test tube. Instead, she needs a host colony, typically from the genus Tapinoma, to establish herself. This process often involves the queen invading the host nest and, in some cases, 'decapitating' or eliminating the host queen over several days. Successfully integrating a B. syrius queen into a host colony is the most critical and challenging step in their husbandry.
Providing the correct host species is paramount for successful colony initiation. Research suggests that Bothriomyrmex queens use chemical mimicry, specifically secretions from their pygidial glands, to gain acceptance into the host Tapinoma colony. Without the right host and proper introduction techniques, the queen will likely fail to establish a colony. It's crucial for antkeepers to research which local Tapinoma species are suitable hosts and how to safely introduce the Bothriomyrmex syrius queen to minimize stress and rejection.
Once established, these colonies can thrive, but their exact growth rate and ultimate size can vary. General observations for the genus suggest they are omnivores and will readily consume sugar water and various insect proteins. Their nests in the wild are often found in soil or rotten wood, so providing a similar environment in captivity, such as a naturalistic soil setup or a Ytong nest, can contribute to their well-being and encourage natural behaviors.
Given their small size and potentially delicate nature during the founding stage, monitoring humidity and temperature levels precisely is important. Fluctuations can be detrimental, especially to young brood or a stressed founding queen. A good hydration system in the formicarium is essential, maintaining moderate humidity to prevent desiccation and mold growth, which are common issues in smaller setups.
Frequently Asked Questions
What makes Bothriomyrmex syrius unique for antkeepers?
Their most distinctive trait is their temporary social parasitic founding. Unlike many queen ants that start a colony alone, a Bothriomyrmex syrius queen needs to invade a host Tapinoma colony and take over, which is a fascinating yet challenging process for antkeepers to witness and manage.
How do I start a Bothriomyrmex syrius colony?
You can't just put a queen in a test tube and expect her to found. You'll need to acquire a queen after her nuptial flight and then introduce her to a small, healthy colony of a suitable host species, usually Tapinoma. This can be a delicate process requiring specific techniques to ensure acceptance.
What kind of host ants do Bothriomyrmex syrius queens use?
They primarily parasitize Tapinoma species. Specific local Tapinoma species will be more suitable than others, so it's vital to research which ones are native to your queen's origin and commonly used as hosts for this genus.
Are Bothriomyrmex syrius workers hard to keep?
Once a colony is established and past the parasitic founding stage, caring for the workers is generally straightforward. They are omnivorous and will eat common ant foods like sugar water and small insects. The challenge is primarily in getting the colony successfully founded.
What type of nest is best for Bothriomyrmex syrius?
Given their natural preference for nesting in soil or rotten wood, a naturalistic setup with a soil substrate or a Ytong nest with good hydration is often ideal. Acrylic nests can also work, but ensure they have excellent humidity control and escape-proof features, as these ants are quite small.
Do Bothriomyrmex syrius sting or bite?
Bothriomyrmex syrius workers do not possess a sting. Their primary defense, if threatened, would be biting or releasing defensive chemicals, but they are generally not aggressive towards keepers.
How large do Bothriomyrmex syrius colonies get?
While exact numbers can vary, a mature colony is typically estimated to reach thousands of workers, classifying them as a medium-sized colony.
Do they require diapause?
Yes, Bothriomyrmex syrius requires a period of diapause, or hibernation, during the colder months. This is crucial for the long-term health and development of the colony. A cool, stable temperature for a couple of months is usually sufficient.
What should I feed my Bothriomyrmex syrius colony?
As omnivores, they will readily accept sugary foods like sugar water, honey water, or fruit, alongside protein sources such as small feeder insects (e.g., fruit flies, mealworm pieces, crickets). Always ensure protein is thoroughly dead before offering.
Are Bothriomyrmex syrius prone to specific issues in captivity?
Beyond the challenges of parasitic founding, common issues include mold growth in overly damp nests, mites, or the colony stalling if environmental conditions or nutrition aren't met. Their small size also makes them good escape artists, so secure setups are a must.
