Scientific illustration of Platythyrea punctata (Common Silvery Hunter Ant) - showing key identification features including head, thorax, and gaster.

Common Silvery Hunter Ant

Platythyrea punctata

Polygynous Non-Parasitic Queen Gamergate
Sci. Name
Platythyrea punctata
Tribe
Platythyreini
Subfamily
Ponerinae
Author
Smith, 1858
Common Name
Common Silvery Hunter Ant
Distribution
Found in 24 countries
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Introduction

Platythyrea punctata is a medium-sized ponerine ant about 6 mm long . It is known for its thelytokous parthenogenesis, where workers produce female offspring without mating . Workers are charcoal-colored with a silvery pubescence, have an elongate-rectangular petiole, and heavily punctured body . This species is found throughout the Caribbean islands, Florida, and Mesoamerica, from southern Texas to Brazil . Colonies nest in dead wood, and workers forage singly, primarily at night, hunting insects .

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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: Caribbean islands, Florida, and Mesoamerica. Found in wooded areas, nesting in dead wood such as fallen logs and branches [1][4].
  • Colony Type: Thelytokous parthenogenetic, workers reproduce without mating. In most populations, morphological queens are absent, and colonies consist of workers that reproduce clonally. One worker monopolizes reproduction through dominance hierarchies [7][2][3].
  • Size & Growth:
    • Queen: ~6 mm [1]
    • Worker: ~6 mm [1]
    • Colony: Up to 167 workers [3]
    • Growth: Moderate
    • Development: ~8 weeks [8] (Development at 27°C with 12-hour light/dark cycle)
  • Antkeeping:
    • Temperature: Keep at 23-27°C. Laboratory colonies maintained at 23-26°C or 27°C [7][8].
    • Humidity: Provide a humidity gradient, mostly dry nest chamber with one small moist area, as they prefer hard, dry wood [9].
    • Diapause: No diapause required, based on tropical distribution.
    • Nesting: Use dead wood nesting, provide rotten wood pieces or Y-tong nests with narrow chambers. They prefer dry to moderately damp conditions [9][4].
  • Behavior: Fast-moving and wary ants that forage singly at night, hunting insects. Predatory by nature. Workers form dominance hierarchies for reproduction. Medium escape risk, use standard barriers [7][5].
  • Common Issues: colonies require dead wood nesting sites, synthetic nests may not be ideal [9]., thelytokous reproduction means only one worker should reproduce, overstocking can cause aggression [3]., small colony size makes them vulnerable to stress, handle gently during transfers [3]., tropical species needs warm temperatures, cold can slow brood development [7]., colonies from disturbed habitats are smaller and more fragile [9].

Unique Reproductive Biology

Platythyrea punctata reproduces through thelytokous parthenogenesis, workers produce female offspring from unfertilized eggs without mating [2][3]. In most Caribbean populations, morphological queens are absent, and colonies consist solely of workers. One dominant worker monopolizes reproduction while others perform tasks [7]. When a reproductive worker is removed, another begins laying eggs within days [3]. Males are extremely rare in thelytokous populations [2].

Colony Structure and Behavior

Colonies contain up to 167 workers, with one or two reproductives [3]. Workers show age-based task division: young workers tend brood inside the nest, while older workers forage [7]. Foragers can revert to nursing if isolated from younger workers [11]. Workers engage in policing to maintain single-egg-layer colonies [7].

Feeding and Diet

This species is predatory, hunting insects like fruit flies and crickets [5][6]. Offer small live insects and honey water several times per week [7].

Nesting Requirements

In the wild, they nest in dead wood, preferring hard, dry wood [9][4]. In captivity, use Y-tong or plaster nests with chambers, and keep conditions dry to moderately damp [9].

Temperature and Seasonal Care

Keep at 23-27°C year-round, as they do not require diapause [7][8]. Avoid temperatures below 20°C.

Colony Fusion and Social Behavior

Colonies can fuse when they encounter each other, with initial aggression toward reproductives [12]. Workers cannot discriminate between nestmates and non-nestmates, allowing genetic lineages to coexist [12].

Frequently Asked Questions

Can I keep Platythyrea punctata in a test tube?

Test tubes are not ideal, use Y-tong or plaster nests with chambers, as they naturally nest in dead wood [9][4].

How long does it take for first workers to appear?

About 8 weeks from egg to worker at 27°C [8].

How do colonies reproduce?

Through thelytokous parthenogenesis, workers produce female offspring without mating [2][3].

Can I keep multiple queens together?

This species typically lacks queens, colonies are headed by a reproductive worker [3]. You can combine colony fragments as they readily fuse [12].

What do they eat?

They hunt insects like fruit flies and crickets, and accept honey water [5][6][7].

Are they good for beginners?

Intermediate difficulty, they require specific nesting and warm temperatures, so some experience is helpful.

Do they need hibernation?

No, as a tropical species they do not require diapause.

Why are workers dying?

Common causes include cold temperatures, improper humidity, stress, or poor nutrition [9][7].

How big do colonies get?

Up to 167 workers in the wild [3][9].

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References

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This caresheet is licensed under CC BY-SA 4.0 .