Polyrhachis hauxwelli

Quick Summary

• Difficulty: Medium
• Origin & Habitat: Native to the Indomalayan region, recorded in India, Myanmar, Pakistan, Thailand, and Jordan. Habitats range from tropical areas to cool broadleaved forests at 1600m elevation ^[4][2][3].
• Colony Type: Colony structure is unconfirmed. Based on typical Polyrhachis patterns, likely single-queen (monogyne) colonies, but this needs confirmation.
• Size & Growth:
  • Queen: Size data unavailable, inferred from Polyrhachis genus as medium-sized
  • Worker: Size data unavailable, inferred from Polyrhachis genus as medium-sized
  • Colony: Unknown, no specific data available
  • Growth: Moderate, inferred from genus patterns
  • Development: Estimated 6-8 weeks at optimal temperature based on related Formicinae species (Development time is inferred from genus patterns as no specific study exists)
• Antkeeping:
  • Temperature: Keep warm and stable, roughly 22-26°C, based on their wide elevation range ^[4]. Avoid extremes below 15°C or above 30°C.
  • Humidity: Keep the nest substrate consistently moist but not waterlogged, as they are found in both moist and drier areas ^[4].
  • Diapause: No, being a tropical/subtropical species, they do not require hibernation. A slight temperature reduction in winter may be beneficial.
  • Nesting: Based on genus patterns, they typically nest in soil cavities or rotting wood. Use naturalistic setups with soil or Y-tong/plaster nests.
• Behavior: Generally peaceful but defensive when threatened. They lack a functional sting and defend by spraying formic acid (subfamily Formicinae, tribe Camponotini). Active foragers that tend aphids for honeydew and are preyed upon by tiger beetles, indicating ground foraging ^[6]. Escape risk is moderate due to medium size and activity.
• Common Issues: limited species-specific research means care is largely inferred from genus patterns, wild-caught colonies may have parasites given they are preyed upon by tiger beetles, humidity balance is important, avoid both overly dry and waterlogged conditions, escape prevention should be maintained despite medium size, active foragers can find gaps

Housing and Nest Preferences

You can house Polyrhachis hauxwelli in setups that provide space and humidity control. A naturalistic setup with a soil chamber works well, as they nest in soil cavities or rotting wood in the wild ^[4]. Alternatively, a Y-tong or plaster nest provides visibility and humidity control. Ensure the nest substrate holds moisture without becoming waterlogged. A small water reservoir helps maintain stable humidity. The outworld should be sized appropriately for the colony ^[2].

Feeding and Diet

In the wild, Polyrhachis hauxwelli tends aphids like Aphis craccivora for honeydew ^[5]. They also eat small insects and arthropods. In captivity, offer constant sugar water or honey, and protein sources like small crickets or mealworms 2-3 times per week. Remove uneaten prey after 24-48 hours to prevent mold.

Temperature and Seasonal Care

Maintain temperatures around 22-26°C, with a gentle gradient using a heating cable on one side of the nest ^[4]. Avoid temperatures below 15°C or above 30°C. During winter, a slight reduction to 18-20°C is acceptable, but no true diapause is needed.

Behavior and Colony Dynamics

Workers are moderately polymorphic and generally not aggressive but will defend the nest by spraying formic acid. They are active foragers, searching for honeydew and small prey. The species is recorded as prey for tiger beetles, indicating ground foraging in agricultural areas ^[6]. Colony growth is moderate, with first workers expected 6-8 weeks after queen lays eggs under optimal conditions.

Frequently Asked Questions

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References