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

Temnothorax kutteri

Monogynous Parasitic Queen No Gamergate
Sci. Name
Temnothorax kutteri
Tribe
Crematogastrini
Subfamily
Myrmicinae
Author
Cagniant, 1973
Distribution
Found in 2 countries
AI Identifiable
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Introduction

Temnothorax kutteri is a small, pale yellowish ant. Workers are 2.4-3.4 mm, queens 3.4-3.7 mm . Originally described as *Chalepoxenus kutteri*, it was moved to *Temnothorax* in 2014 based on genetic analysis . Workers have a sharp tooth under the post-petiole and a smooth, shiny head with sparse hairs . It lives in Mediterranean France and Spain, nesting under flat stones, in rock fissures, or under moss in open woodlands . This ant is a slave-maker. It invades nests of other *Temnothorax* species, replaces their queen, and uses the host workers to raise its own brood . Parasite workers take part in nest tasks like feeding and moving larvae, but they stay aggressive toward the hosts . Natural colonies are small: fewer than 20 parasite workers with up to 250 host workers . This parasitic lifestyle makes it one of the hardest *Temnothorax* species to keep.

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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: Expert
  • Origin & Habitat: Mediterranean France and Spain, mainly the Iberian Peninsula. Found under stones or moss in cleared oak (*Quercus*) and pine (*Pinus halepensis*) woodlands, from the coast up to about 1650 m elevation [3][4]. Also collected in wet inland woods in southern Spain, consistently under moss [3].
  • Colony Type: Monogyne, single-queen colonies. Obligate slave-maker that needs a host *Temnothorax* colony to survive. The parasite queen replaces the host queen, so the mixed colony never contains the host queen [1][5].
  • Size & Growth:
    • Queen: 3.4-3.7 mm [1]
    • Worker: 2.4-3.4 mm [1]
    • Colony: Up to 20 parasite workers in wild colonies, host workers can reach 250 [3]
    • Growth: Slow, inferred from small colony sizes and dependence on hosts
    • Development: Unknown, no direct studies on development time (Development is unconfirmed but likely follows typical *Temnothorax* patterns of 6-10 weeks at warm temperatures. The parasitic lifestyle may affect timelines.)
  • Antkeeping:
    • Temperature: Mediterranean species, keep at 20-24°C. Based on typical *Temnothorax* preferences and habitat data from France and Spain [3].
    • Humidity: Moderate, they nest under stones and moss in areas with varying moisture. Keep the substrate slightly moist but not waterlogged. Provide a humidity gradient [3].
    • Diapause: Likely yes, Mediterranean species probably need a cool period in winter. Specific requirements unconfirmed.
    • Nesting: A naturalistic setup with flat stones, rock fissures, or cork bark works best. They nest in small cavities under stones in exposed spots. A Y-tong nest with narrow, tiny chambers is suitable [1][3].
  • Behavior: Slave-maker, aggressive toward host colonies during raids but otherwise docile toward humans. Workers are tiny and not defensive. They conduct raids to steal host brood and integrate host workers [1][3]. Escape risk is moderate due to small size, use standard barrier methods.
  • Common Issues: requires a live host colony to survive, parasite workers cannot found alone, very small parasite colony size means slow growth, aggressive toward host species during raids, must keep a separate host colony healthy, difficult to establish in captivity due to complex parasitic dependency, rare in the wild (

Understanding the Parasitic Lifestyle

Temnothorax kutteri is an obligate social parasite, it cannot survive without a host colony of another Temnothorax species. This is very different from most ants you might keep. The parasite queen invades a host nest, kills or replaces the host queen, and then uses the host workers to raise her own brood [1][3]. The host workers continue their normal tasks (foraging, brood care, nest maintenance) while the parasite workers live alongside them.

In mixed colonies, the parasite queen is always present and the host queen is gone, the parasite eliminates her [1]. This is not like temporary parasites that only use hosts for a while. The parasite workers take part in nest tasks (feeding, moving larvae) but stay aggressive toward the hosts [3]. Natural colonies usually have just one parasite queen with fewer than 20 parasite workers, but can have up to 250 host workers [3].

Host Species Requirements

Keeping T. kutteri means you must also keep at least one healthy host colony. In the wild, it parasitizes several Temnothorax species. The most common host is Temnothorax racovitzai (formerly Temnothorax racovitzai), followed by T. specularis, T. recedens, T. rabaudi, T. unifasciatus, T. lichtensteini, T. platycephalus, and T. grouvellei [4][3].

For captive care, you need to establish a host colony first. If possible, collect the host from the same region, as local adaptations may matter. Host colonies can reach 250 workers in the wild [3], so plan for that. The host colony does most of the work, foraging, brood care, nest building, and the parasite colony depends entirely on it.

Feeding and Nutrition

Both the parasite and host colonies need feeding. The host workers forage and share food with parasite workers through trophallaxis (mouth-to-mouth exchange) [3]. Offer standard ant foods: sugar water or honey for energy, and small protein sources like fruit flies, pinhead crickets, or other tiny insects.

Because host workers do the foraging, you may see them collecting food while parasite workers stay in the nest or tend larvae. That’s normal. The parasite workers are somewhat integrated but keep their aggressive side toward hosts [3]. Feed the colony 2-3 times per week, removing any uneaten prey after 24 hours.

Temperature and Seasonal Care

As a Mediterranean species from France and Spain, T. kutteri does best at 20-24°C. It lives from the coast up to over 1600 m elevation, so it can handle some variation [4][6]. Room temperature (21-23°C) works well.

Winter diapause is likely needed, like most Mediterranean Temnothorax. Lower the temperature to 10-15°C for 2-3 months in winter, matching the natural cycle. Nuptial flights happen in June and July in the wild [7], so if you have an established colony, reproduction will happen in summer. During hibernation, keep the nest slightly damp but not wet.

Nest Setup and Housing

T. kutteri naturally nests under flat stones, in rock cracks, and under moss in open woodlands [1][3]. For captivity, a naturalistic setup works best: a container with a soil layer, flat stones on top, and some moss if available. A Y-tong nest with small, narrow chambers suited for their tiny 2-4 mm size is also good.

Because they are so small, escape prevention is crucial. Use fine mesh on any openings and barrier fluids like fluon on test tube rims. Give the colony both a moist area (for the nest) and a dry area (for foraging). A small water tube for drinking is a good idea.

Ethical and Legal Considerations

This is a very specialized species that is rarely kept in captivity because of its parasitic needs. Before trying to keep T. kutteri, think about whether you can properly maintain both the parasite and host colonies long-term. In the wild, it’s rare, only about 1% of ant colonies sampled in one study contained it [8].

Also check local laws before collecting. It may be protected in some areas. Never release any ant colony into the wild, especially a parasitic species that could harm native Temnothorax populations. If you can’t commit to caring for both colonies, pick a simpler species.

Frequently Asked Questions

Can I keep Temnothorax kutteri as a beginner?

No, this is an expert-level species. T. kutteri is an obligate social parasite that must have a host Temnothorax colony to survive. You cannot keep parasite workers alone. Maintaining two colonies (parasite and host) long-term is much harder than keeping a single colony. Most antkeepers should start with non-parasitic species [3].

What do Temnothorax kutteri eat?

They eat the same foods as other small ants, sugar sources (honey, sugar water) and small insects (fruit flies, tiny crickets, springtails). The host workers forage and share food with parasite workers through trophallaxis. Give fresh food 2-3 times per week and remove leftovers after 24 hours [3].

How do I start a Temnothorax kutteri colony?

You need to collect both the parasite colony and a host colony from the wild. Look for mixed colonies under stones in Mediterranean woodland areas in France or Spain. The parasite queen will be in the same nest as host workers, but the host queen will be gone. This is hard to find, only about 0.03% of samples in one study contained mixed colonies [8]. Alternatively, you might introduce a parasite queen to an established host colony, but success is not guaranteed.

Do Temnothorax kutteri sting?

Not in the usual way. They have a modified, flattened stinger used to wipe or smear venom onto enemies, not to pierce like typical stinging ants. They may bite if handled roughly, but are not dangerous to humans. Their main defense is their aggressive behavior during raids on host colonies [1].

What temperature do Temnothorax kutteri need?

Keep them at 20-24°C, typical for Mediterranean species. Room temperature is usually fine. They can handle some variation but avoid extremes. A slight temperature gradient in the nest lets them choose. In winter, they likely need a cool period at 10-15°C for hibernation [7].

How big do Temnothorax kutteri colonies get?

Natural colonies are small, typically fewer than 20 parasite workers, though host colonies can reach 250 workers [3]. The parasite colony depends on the host workers, so total size is limited by what the host can support. In captivity with a healthy host, you might get 50-100 total workers.

Can I keep multiple queens together?

No. T. kutteri is monogynous, colonies have only one queen [5]. In mixed colonies, only the parasite queen is present, as she has killed the host queen. Putting multiple parasite queens together would likely lead to fighting.

Why are my Temnothorax kutteri dying?

The most common reason is losing the host colony. Without host workers, the parasite workers cannot survive, they rely entirely on the hosts for foraging and brood care. Make sure your host colony is healthy and well-fed. Also check that temperature and humidity are right. Parasite colonies are sensitive to disturbance, keep nest inspections to a minimum.

Do Temnothorax kutteri need hibernation?

Yes, likely. As a Mediterranean species from France and Spain, they probably need a winter rest. Lower the temperature to 10-15°C for 2-3 months during winter. This mimics their natural cycle and is important for colony health. Nuptial flights occur in June and July in the wild [7].

What is the best nest type for Temnothorax kutteri?

A naturalistic setup with flat stones on soil works best, copying their natural nesting under stones and in rock cracks [1][3]. A Y-tong nest with small chambers scaled for their tiny 2-4 mm size is also fine. The key is small, tight chambers. Make sure escape prevention is good, as they are very small.

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References

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