Polyrhachis exercita

Quick Summary

• Difficulty: Medium
• Origin & Habitat: Native to the Indomalaya region, India, Sri Lanka, and Bangladesh. Recorded across multiple Indian states including Karnataka, Kerala, Tamil Nadu, West Bengal, Maharashtra, Gujarat, Goa, Orissa, Tripura, and Jammu & Kashmir ^[1]. Inhabits wet tropical zones such as coconut plantations and natural forests ^[6].
• Colony Type: Likely monogyne (single queen) based on typical Polyrhachis patterns, though not specifically documented for this species.
• Size & Growth:
  • Queen: Size data unavailable, no measurements found in research context.
  • Worker: ~7.7 mm total length ^[2]
  • Colony: Unknown, estimated based on related Polyrhachis species
  • Growth: Moderate, inferred from tropical Formicinae patterns
  • Development: Unknown, no specific data available for this species (Development time is unconfirmed, tropical species typically develop faster than temperate ones.)
• Antkeeping:
  • Temperature: Keep warm, roughly 24-28°C, based on tropical habitat inference ^[1][6].
  • Humidity: Keep substrate consistently moist but not waterlogged, as they inhabit wet tropical zones ^[6].
  • Diapause: No, tropical species do not require hibernation.
  • Nesting: Arboreal carton nesters, provide vertical structures like cork bark or branches for nest building ^[4].
• Behavior: Generally calm and non-aggressive due to subordinate functional group ^[5]. Arboreal by nature, they climb and explore vertical spaces. Workers are active foragers but may defend nest if disturbed. Escape risk is medium due to climbing ability.
• Common Issues: arboreal nesting requirements, need vertical space and structures, not ground nests., tropical warmth needed year-round, room temperature may be too cold in winter., carton nest building may clog formicaria if humidity is too high., escape prevention necessary, they can climb smooth surfaces like glass., limited availability in antkeeping hobby, may be hard to find.

Housing and Nest Setup

Polyrhachis exercita requires an arboreal setup with vertical space. They naturally build carton nests in trees using papery material ^[4]. In captivity, use cork bark, vertical formicaria, or naturalistic terrariums with branches and elevated platforms. Provide climbing surfaces like vines or mesh. Escape prevention is important, apply fluon or barrier tape to smooth surfaces, as workers can climb glass ^[4].

Feeding and Diet

As omnivores, they accept sugar sources like honey water and protein from insects. Offer small crickets, mealworms, or fruit flies twice weekly ^[7]. In the wild, they forage on trees for honeydew and prey, and are preyed upon by tiger beetles ^[7]. Place food on elevated platforms to match arboreal foraging habits.

Temperature and Seasonal Care

Maintain warm conditions around 24-28°C based on tropical habitat inference ^[1][6]. No diapause needed, they remain active year-round. Humidity should be moderate to high, with moist substrate but not waterlogged ^[6].

Colony Development and Growth

Colony growth is moderate, with workers measuring approximately 7.7 mm total length ^[2]. Development timeline is unknown, but tropical species typically develop faster. Queens are larger but size data is unavailable.

Behavior and Temperament

This species is generally calm due to its subordinate functional group ^[5]. Workers are arboreal and active foragers. They may defend nests but are not aggressively territorial.

Frequently Asked Questions

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References