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

Pheidole mendanai

Monogynous Non-Parasitic Queen No Gamergate
Sci. Name
Pheidole mendanai
Tribe
Attini
Subfamily
Myrmicinae
Author
Mann, 1919
Distribution
Found in 1 countries
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Introduction

Pheidole mendanai is a small ant species native to the Solomon Islands archipelago in the Pacific. First described by William M. Mann in 1919 , it is part of the Attini tribe. Recorded from islands including Makira, Guadalcanal, and Ysabel . Like other Pheidole species, it exhibits polymorphism with minor and major workers. Major workers have enlarged heads for seed processing and defense .

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

Native Invasive Introduced (indoor) Intercepted Unknown
Data Sources
Year Range 2000 - 2026

Quick Summary

  • Difficulty: Easy
  • Origin & Habitat: Solomon Islands, a tropical archipelago in the western Pacific. This species inhabits forest environments on islands with high humidity and warm temperatures year-round [2][3][1].
  • Colony Type: Based on Pheidole patterns, likely monogyne (single queen colonies).
  • Size & Growth:
    • Queen: Size data unavailable, inferred from Pheidole genus (~7-9 mm)
    • Worker: Minor workers: ~2-3 mm, Major workers: ~3-5 mm, inferred from Pheidole genus
    • Colony: Up to several hundred workers, inferred from typical Pheidole colonies
    • Growth: Moderate
    • Development: Estimated 6-8 weeks, inferred from tropical Myrmicinae patterns (Development is faster in warm conditions)
  • Antkeeping:
    • Temperature: Keep warm around 24-28°C, inferred from tropical habitat
    • Humidity: Keep substrate consistently moist but not waterlogged, inferred from tropical environment
    • Diapause: No, tropical species do not require hibernation
    • Nesting: Accepts various nest types like Y-tong, plaster, or test tubes, inferred from genus patterns
  • Behavior: Generally peaceful. Major workers may defend the colony aggressively if threatened. Minor workers are active foragers. They have a functional stinger but are not aggressive toward keepers. Escape risk is moderate for their size.
  • Common Issues: drying out is the main risk, keep substrate moist., colonies can be slow to establish, patience needed., major workers may appear threatening but are defensive only., wild-caught colonies may have parasites, quarantine new colonies., overfeeding can lead to mold, remove uneaten food promptly.

Housing and Nest Setup

Pheidole mendanai adapts well to various captive setups. Test tubes work for founding colonies with a water reservoir and cotton plug, keeping the substrate damp but not flooded. Once the colony reaches 30-50 workers, move to a formicarium. Y-tong nests are excellent for humidity retention. Plaster nests also work but may need occasional misting. Avoid dry setups, these ants need humid environments.

Feeding and Diet

Pheidole mendanai is omnivorous. Offer protein sources like small insects twice weekly, seeds like cracked sunflower seeds, and sugar water or honey for energy. Remove uneaten food within 24-48 hours to prevent mold.

Temperature and Humidity

Maintain temperatures between 24-28°C with a slight gradient using a heating cable if needed. Humidity should be high, keep the nest substrate consistently damp but never waterlogged.

Colony Development

Colonies grow through a distinct caste system. The queen lays eggs in a claustral chamber, and first workers (nanitics) emerge after 6-8 weeks. Minor workers begin foraging immediately. Major workers appear later, using their enlarged heads for seed processing and defense.

Behavior and Temperament

This species is generally calm and easy to handle. Minor workers are active foragers, while major workers defend the nest if disturbed. They possess a functional stinger but are not aggressive toward keepers. Escape prevention should be standard, use barriers like fluon for this size.

Frequently Asked Questions

How long does it take for Pheidole mendanai to have first workers?

Expect first workers to emerge 6-8 weeks after the queen lays eggs, assuming temperatures around 25-28°C. This is inferred from tropical Pheidole patterns.

What do Pheidole mendanai ants eat?

They are omnivorous. Offer small insects for protein twice weekly, seeds like cracked sunflower seeds, and sugar water or honey for energy.

What temperature do Pheidole mendanai need?

Keep them warm at 24-28°C. They are tropical ants from the Solomon Islands and need year-round warmth.

Do Pheidole mendanai need hibernation?

No, they do not hibernate. Being a tropical species, they remain active year-round if kept warm.

How big do Pheidole mendanai colonies get?

Based on typical Pheidole species, expect up to several hundred workers at maturity. The colony grows gradually over 1-2 years.

Can I keep multiple Pheidole mendanai queens together?

This is unconfirmed, but Pheidole species are typically monogyne. Combining unrelated queens may result in fighting.

Is Pheidole mendanai good for beginners?

Yes, this is an easy species to keep. They are forgiving of minor care mistakes and adapt well to captivity.

What humidity do Pheidole mendanai need?

High humidity is needed, keep the nest substrate consistently damp but not waterlogged.

When should I move Pheidole mendanai to a formicarium?

Move them when the test tube becomes crowded, typically around 30-50 workers. Ensure the new setup is pre-humidified.

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References

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This caresheet is licensed under CC BY-SA 4.0 .