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

Dorymyrmex flavescens

Monogynous Non-Parasitic Queen No Gamergate
Sci. Name
Dorymyrmex flavescens
Tribe
Leptomyrmecini
Subfamily
Dolichoderinae
Author
Mayr, 1866
Distribution
Found in 1 countries
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Introduction

Dorymyrmex flavescens is a yellowish, shiny ant native to Argentina. Workers are approximately 5mm long, and queens are about 8mm . They are found in open areas such as vineyards in Mendoza . This species is the type species for the D. flavescens group, meaning it serves as the reference for that group . Like other Dolichoderinae ants, they lack a functional stinger and defend themselves by releasing chemicals from their abdomen.

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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: Native to Argentina, particularly in open areas like vineyards in Mendoza, Rio Negro, and Chubut provinces [3][4][6].
  • Colony Type: Likely monogyne based on typical Dorymyrmex patterns, but unconfirmed.
  • Size & Growth:
    • Queen: 8mm [2]
    • Worker: 5mm [1]
    • Colony: Unknown, no specific data available.
    • Growth: Moderate, inferred from related species
    • Development: Estimated 6-8 weeks based on typical Dolichoderinae development [6] (Development time is inferred, specific data for this species is unavailable.)
  • Antkeeping:
    • Temperature: Keep at warm temperatures, roughly 24-28°C, based on their habitat in Argentina [3].
    • Humidity: Provide a humidity gradient, mostly dry nest with one small moist area, as they inhabit dry open areas [3].
    • Diapause: Yes, likely requires winter diapause of 2-3 months at 10-15°C based on their temperate range [6].
    • Nesting: Ground-nesting species that prefers dry conditions. Use Y-tong or plaster nests with a dry substrate [3].
  • Behavior: Workers are active foragers and not aggressive toward keepers. They will defend their nest if threatened. Escape risk is moderate due to their size [1].
  • Common Issues: high humidity can cause colony decline, keep nest conditions relatively dry., skipping winter diapause can weaken colonies over time., queens may be difficult to establish, ensure minimal disturbance during founding., colonies grow slowly, be patient and avoid overfeeding.

Nest Preferences and Housing

Dorymyrmex flavescens is a ground-nesting species that naturally creates nests in soil, often in open sunny areas [3]. In captivity, use Y-tong or plaster nests to control humidity. Provide a dry substrate with a small moist area, as these ants prefer dry conditions [3]. Start colonies in a test tube setup, then move to a proper nest once they have 20-30 workers.

Feeding and Diet

These ants are omnivorous. Offer sugar water or honey constantly for energy, and provide small insects like fruit flies or mealworms 2-3 times per week for protein [4]. Place food in the outworld for easy access.

Temperature and Seasonal Care

Keep the nest at warm temperatures around 24-28°C during active seasons [3]. During winter, reduce temperatures to 10-15°C for a 2-3 month diapause period [6].

Behavior and Temperament

Workers are active foragers and will defend their nest if threatened. They communicate through chemical trails and are diurnal [1]. Escape risk is moderate due to their size, so standard barriers work well.

Frequently Asked Questions

How long does it take for Dorymyrmex flavescens to raise first workers?

Expect first workers in 6-8 weeks at warm temperatures, based on typical Dolichoderinae development [6].

What temperature should I keep Dorymyrmex flavescens at?

Keep the nest at roughly 24-28°C during active seasons, based on their habitat in Argentina [3].

Do Dorymyrmex flavescens need hibernation?

Yes, they likely require a winter diapause of 2-3 months at 10-15°C based on their temperate range [6].

Can I keep multiple Dorymyrmex flavescens queens together?

This species is likely monogyne, so only one queen per colony is recommended. Combining queens may lead to fighting.

What do Dorymyrmex flavescens eat?

They are omnivorous. Offer sugar water constantly and feed small insects like fruit flies 2-3 times per week [4].

Are Dorymyrmex flavescens good for beginners?

Yes, they are considered easy to keep due to their resilience and straightforward care requirements.

How big do Dorymyrmex flavescens colonies get?

Colony size data is unavailable, but based on genus patterns, they may reach several hundred workers.

When should I move Dorymyrmex flavescens from a test tube to a formicarium?

Move them once the colony has 20-30 workers and the test tube is cramped, ensuring the new nest provides dry conditions.

Why is my Dorymyrmex flavescens colony declining?

Common causes include excessive humidity, improper temperatures, or skipping diapause. Ensure conditions match their natural dry habitat [3].

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References

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This caresheet is licensed under CC BY-SA 4.0 .