Scientific illustration of Polyrhachis diversa ant - showing key identification features including head, thorax, and gaster.

Polyrhachis diversa

Monogynous Non-Parasitic Queen No Gamergate
Sci. Name
Polyrhachis diversa
Subgenus
Hagiomyrma
Tribe
Camponotini
Subfamily
Formicinae
Author
Kohout, 2013
Distribution
Found in 1 countries

Introduction

Polyrhachis diversa is a medium-large rainforest ant from the Cape York Peninsula in Queensland, Australia. Workers measure 5.80-6.65 mm and are black with rich golden pubescence on the head, mesosoma, and petiole that hides the underlying sculpturation. They have very short, divergent spines on the petiole . Unlike the similar Polyrhachis tubifera, P. diversa has virtually no pubescence on the gaster . These ants are arboreal, living on tree trunks and foliage in rainforest habitats . As a member of the Formicinae subfamily, they lack a functional sting but can spray formic acid for defense.

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Status by country, from Kass et al. 2022 & Wong et al. 2023

Native Invasive Introduced (indoor) Intercepted Unknown
2000 - 2026

Quick Summary

  • Difficulty: Medium
  • Origin & Habitat: Cape York Peninsula, Queensland, Australia, rainforest habitats where they live on tree trunks and foliage [1][2]
  • Colony Type: Colony structure is unconfirmed, no specific data on queen number or social structure
  • Size & Growth:
    • Queen: Not documented, no queens have been described in scientific literature
    • Worker: 5.80-6.65 mm [1]
    • Colony: Unknown, no colony size data available
    • Growth: Unknown, no specific data on growth rate
    • Development: Unknown, no species-specific data available (Development time is unconfirmed, based on tropical rainforest habitat, colonies may develop year-round in warm conditions)
  • Antkeeping:
    • Temperature: Keep warm, roughly 24-28°C, based on rainforest habitat [1]. Provide a gentle gradient if possible.
    • Humidity: Keep substrate consistently moist but not waterlogged, based on rainforest habitat [1]. Mist regularly and provide a water source.
    • Diapause: Unknown, no data on dormancy, based on tropical range, diapause may not be required
    • Nesting: Arboreal species, prefer vertical nests with climbing structures like cork bark or twigs [1][2]. Y-tong or plaster nests work well, avoid acrylic nests.
  • Behavior: Generally peaceful and not aggressive. Workers are active foragers, particularly during daylight hours. As arboreal ants, they climb vertical surfaces. Escape risk is moderate due to medium size (around 6 mm), standard barriers are usually sufficient. As Formicinae, they may bite if handled but lack a sting.
  • Common Issues: humidity too low can dry out the colony, maintain moist substrate, temperature drops below 20°C can harm the colony, keep stable warmth, poor ventilation can lead to mold in humid conditions, balance airflow, arboreal nature may cause underuse of ground-level nests, provide vertical space

Natural History and Distribution

Polyrhachis diversa is endemic to the Cape York Peninsula in Queensland, Australia, where it inhabits tropical rainforest environments [1]. This species was formally described in 2013 by Rudolf Kohout [1]. It is arboreal, collected on tree trunks and foliage, and differs from Polyrhachis tubifera by having golden pubescence on the head and mesosoma but not on the gaster [2].

Housing and Nest Preferences

As an arboreal species, P. diversa needs vertical space for climbing. Use Y-tong, plaster, or soil nests with elevated chambers, avoid acrylic nests. Include climbing structures like cork bark or twigs in the outworld. Keep the nest area humid but the outworld can be drier [1][2].

Temperature and Humidity Requirements

Keep the colony warm, around 24-28°C, based on its rainforest habitat [1]. Humidity should be maintained with moist substrate but avoid waterlogging. Mist the nest regularly and provide a water source [1].

Feeding and Diet

Offer sugar sources like honey water constantly and protein such as fruit flies or mealworms 2-3 times per week. Remove uneaten food to prevent mold. Place food on elevated surfaces for arboreal foraging.

Seasonal Care and Overwintering

No specific data on diapause, based on tropical range, maintain warm conditions year-round. If colony activity slows, check temperature and humidity rather than inducing dormancy.

Behavior and Handling

Workers are calm and active during daylight. They may bite if handled but are not aggressive. Escape prevention is moderate, use standard barriers for 6 mm ants [1].

Frequently Asked Questions

How long does it take for Polyrhachis diversa to raise their first workers?

No species-specific data exists. Development time is unknown, but based on tropical habitat, colonies may develop year-round in warm conditions.

Can I keep Polyrhachis diversa in a test tube setup?

Test tubes can work for founding, but these arboreal ants prefer vertical nests once established. Move to a vertical formicarium or Y-tong nest for climbing space.

What temperature do Polyrhachis diversa ants need?

Keep them warm, around 24-28°C, based on their rainforest habitat [1].

Are Polyrhachis diversa good for beginners?

They are rated as medium difficulty due to humidity and temperature needs. Beginners should have experience with humidity-loving ants.

How big do Polyrhachis diversa colonies get?

Colony size is unknown, no data available.

Do Polyrhachis diversa need hibernation?

Diapause is unknown, based on tropical range, they may not require hibernation. Maintain stable warm conditions.

What do Polyrhachis diversa eat?

They are omnivorous. Offer sugar water constantly and protein like small insects 2-3 times per week.

Why is my Polyrhachis diversa colony dying?

Common causes include low humidity, temperatures below 20°C, or poor ventilation leading to mold. Check these parameters first.

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References

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This caresheet is licensed under CC BY-SA 4.0 .