Bothriomyrmex syria

Bothriomyrmex syria

Bothriomyrmex syria is a tiny parasitic ant native to the eastern Mediterranean region, found in Lebanon (its type locality), Israel, Syria, and surrounding areas ^[1][2]. Workers are very small, measuring around 2mm, with the typical Dolichoderine appearance, smooth body, and they get their name from the groove (bothrium) on their back ^[1]. This species is a temporary social parasite, meaning its queen invades nests of Tapinoma ants, uses chemical mimicry to fool the host workers, and gradually takes over the colony ^[3][4]. The queen produces chemicals that match the host's alarm pheromone, allowing her to enter the nest undetected and eventually replace the host queen ^[3][5]. This is one of the more unusual ants to keep because you cannot establish a colony the normal way, you need a host colony for the queen to parasitize.

Quick Summary

• Difficulty: Expert
• Origin & Habitat: Eastern Mediterranean, Lebanon, Israel, Syria, and surrounding regions. Found in warm, dry to moderately humid habitats from sea level up to around 1500m elevation in Lebanon ^[6]. Typically nests in soil or under stones in open, sunny areas ^[7].
• Colony Type: Temporary social parasite, single queen colonies that establish by invading Tapinoma host nests. The queen kills or replaces the host queen and uses host workers to raise her first brood ^[3][4]. Once her own workers emerge, the colony becomes independent.
  • Colony: Monogyne
  • Queen: Temporary parasitic
• Size & Growth:
  • Queen: Estimated 4-5mm based on genus ^[5], queens have been described but exact measurements limited
  • Worker: Approximately 2mm ^[1], very small ants
  • Colony: Unknown for this specific species, but related Bothriomyrmex species typically have colonies of several hundred workers
  • Growth: Unknown, growth depends entirely on successful host colony integration
  • Development: Unknown, development occurs within the host colony after the queen establishes (The queen's first workers are raised by host workers, so timing depends on host colony resources and conditions)
• Antkeeping:
  • Temperature: Keep around 22-26°C, these are Mediterranean ants that prefer warm conditions. A slight gradient allows the colony to self-regulate.
  • Humidity: Low to moderate, they come from dry to semi-dry Mediterranean habitats. Allow the nest area to dry somewhat between water additions.
  • Diapause: Likely a mild winter slowdown in cooler months, but documented behavior is limited. Related species from similar climates may reduce activity in winter.
  • Nesting: Small, compact nests work well, test tubes for founding, small acrylic or Y-tong nests for established colonies. They are very small, so narrow passages are appropriate.
• Behavior: Very docile on their own, they have no real defense since they evolved to rely on host colonies. Workers are active foragers but very small, making escape prevention moderately important. The queen uses chemical deception to enter host nests, so this species cannot be kept in the traditional way of starting with a queen and waiting for workers to hatch ^[3][5].
• Common Issues: This is a parasitic ant, you cannot establish a colony without a host Tapinoma colony, making this species extremely difficult to keep, Queen's adoption into host colony has low success rate even in research settings, Without proper host integration, the colony will fail to develop, Very small size means escape prevention matters, though less critical than for aggressive species, Limited available care information compared to non-parasitic ants

Understanding the Parasitic Lifestyle

Bothriomyrmex syria is a temporary social parasite, which means its queens cannot start colonies on their own like most ants. Instead, the queen must find an existing nest of Tapinoma ants (likely Tapinoma simrothi or a related species in the region) and invade it ^[3]. She uses remarkable chemical mimicry to do this, her pygidial gland produces the same ketone (6-methyl-5-hepten-2-one) that Tapinoma workers use as an alarm pheromone ^[3]. When she enters the host nest, workers smell their own alarm pheromone and become confused rather than attacking ^[4]. The queen then kills or displaces the host queen and uses the host workers to raise her own brood. Once her first workers hatch, the colony becomes functionally independent, though it may retain some host workers for a time. This is fundamentally different from slave-making ants, the parasite doesn't raid other colonies for brood, she simply takes over an existing workforce ^[5].

Housing and Nesting

Because this is a parasitic species, housing is more complex than typical ants. You cannot simply set up a founding queen in a test tube, she needs a host colony to invade. The practical approach would be to establish a Tapinoma colony first (the likely host species in your region), then introduce the Bothriomyrmex queen and hope for successful integration. For the nest itself, use small, compact setups, these are tiny ants that do well in test tubes or small acrylic nests with narrow chambers. The nest should be kept at room temperature in the low-to-mid 20s Celsius range. Humidity can be lower than many ants prefer, these are from dry Mediterranean habitats, so allow the nest to partially dry between water additions. Provide a small outworld for foraging with sugar water and small prey items. ^[7][6]

Feeding and Diet

Once established, Bothriomyrmex workers will forage for the same foods as their Tapinoma hosts. They likely feed on honeydew from aphids and scale insects, plus small insects for protein. In captivity, offer sugar water or honey diluted with water as a constant energy source. For protein, provide small prey items like fruit flies, pinhead crickets, or other tiny insects. Because workers are so small, prey should be appropriately sized, anything too large will be ignored. Feed protein roughly twice per week, and keep sugar sources available at all times. The colony's growth will depend heavily on how well it was integrated with the host colony and how many host workers were taken over.

The Challenge of Keeping Parasitic Ants

We must be honest: Bothriomyrmex syria is not a species we can recommend for most antkeepers. The fundamental challenge is that you cannot establish a colony the normal way. Unlike 99% of ant species where you catch a queen, let her seal herself in a test tube, and wait for workers to hatch, this species requires the queen to successfully invade a host Tapinoma colony, and host adoption is notoriously difficult even in laboratory settings with trained researchers ^[3]. There is no documented method for reliably establishing this species in captivity, and success would require both obtaining a queen AND a compatible host colony at the right time. For these reasons, this species is best considered a fascinating natural history subject to learn about rather than a practical species to keep. If you are specifically interested in parasitic ants, consider starting with more established species in the hobby that demonstrate similar behaviors.

Temperature and Seasonal Care

These ants come from the eastern Mediterranean, so they prefer warm conditions. Keep the nest area around 22-26°C, which is typical room temperature in many homes. A heating cable on one side of the nest can create a gradient if your home runs cool. During winter, related species from similar Mediterranean climates typically show reduced activity but may not enter true hibernation. You can allow temperatures to drop slightly in winter (down to around 15-18°C) to simulate natural seasonal changes, but this species has not been specifically studied for diapause requirements. Observe your colony's activity levels and adjust accordingly, if they become less active in winter, reduce feeding accordingly. ^[7][6]

Frequently Asked Questions

References