Stenamma atribellum

Quick Summary

• Difficulty: Expert
• Origin & Habitat: Honduras – Cortés department, Parque Nacional Cusuco, cloud forest at 1550–2030 m elevation ^[1][2]. The only known nest was found under the bark of a large log near the edge of dwarf forest ^[1][2].
• Colony Type: Single‑queen colonies (monogyne) – the only documented wild colony had one queen and at least 100 workers ^[1]. Colony structure in captivity is unconfirmed beyond this single observation.
• Size & Growth:
  • Queen: Size data unavailable. Only head and mesosoma measurements exist, which do not represent full body length.
  • Worker: Size data unavailable. Only head and mesosoma measurements exist, which do not represent full body length.
  • Colony: At least 100 workers in the only documented wild colony ^[1]. Maximum colony size is unknown.
  • Growth: Unconfirmed. Based on typical Stenamma patterns, likely moderate growth.
  • Development: Unconfirmed – no data exists for this species. Estimated 8–12 weeks based on related Stenamma species. (No direct development data. All estimates are speculative.)
• Antkeeping:
  • Temperature: Cloud forest species from 1550–2030 m elevation – likely prefers cool, stable conditions. Recommended temperature 18–22 °C. Avoid temperatures above 25 °C. Provide a gradient so workers can choose ^[1][2].
  • Humidity: Critical – keep nest substrate consistently damp but not waterlogged. Use moist soil, plaster nests, or Y‑tong with water reservoirs. The natural nest under bark in cloud forest suggests very high humidity ^[1].
  • Diapause: Unconfirmed. As a tropical high‑elevation cloud forest species, they may not require true hibernation but could have reduced activity during cooler periods.
  • Nesting: In nature, nests under loose bark of logs in cloud forest ^[1][2]. In captivity, provide a naturalistic setup with damp substrate and bark pieces, or use Y‑tong/plaster nests with high humidity.
• Behavior: Docile and secretive, based on genus patterns. Workers forage in leaf litter and under bark. They are not known to sting. Escape risk is moderate – use standard barrier methods.
• Common Issues: extreme rarity – virtually unavailable in the hobby, only one known collection, high humidity requirements – colonies can fail quickly if substrate dries out, sensitive to overheating – keep away from direct heat sources and maintain 18–22 °C, no captive husbandry information – keepers must pioneer all care methods

Housing and Nest Setup

Provide a high‑humidity setup that mimics cloud forest conditions. A naturalistic terrarium with damp soil, leaf litter, and loose bark pieces works well – the only known nest was under bark ^[1]. You can also use a Y‑tong (AAC) or plaster nest with a water reservoir to keep humidity high. The key is to keep the substrate consistently moist. Ventilation should be enough to prevent mold but not so strong that the nest dries out. Because these ants are secretive, give them plenty of dark, enclosed spaces.

Feeding and Diet

Diet is unconfirmed for this species. Based on typical Stenamma feeding habits, they likely accept small protein sources like fruit flies, small crickets, and mealworm pieces. They may also take sugar water or honey water once the colony is established. Offer small amounts and remove uneaten food to prevent mold in the humid environment. Avoid overfeeding – cloud forest specialists may have low metabolic demands.

Temperature Management

This species comes from cool cloud forest at 1550–2030 m elevation, so keep the nest area between 18–22 °C. Do not let temperatures exceed 25 °C for long – they are sensitive to overheating ^[1][2]. Room temperature is often fine, but monitor when using any heating. A gentle temperature gradient in the nest lets workers choose their preferred spot. Keep the setup away from direct sunlight and heaters.

Humidity Requirements

High humidity is essential – this ant lives in constantly moist cloud forest. Keep the nest substrate damp but not waterlogged. A water tube or moisture reservoir connected to the nest helps maintain stable humidity. You can also mist the outworld occasionally, but rely on the substrate. Condensation on the nest walls is normal. Avoid strong air currents that dry out the nest ^[1][2].

Colony Founding

Founding behavior is completely unconfirmed for this species – there is no record of whether queens are claustral or semi‑claustral. If you obtain a queen, place her in a test tube setup with damp cotton and leave her completely undisturbed. Do not offer food until first workers appear, as this is safe for most ant species, but we don’t know for sure. Wait at least 8–12 weeks before checking. Be patient and minimize disturbance.

Behavior and Temperament

No direct behavioral observations have been published. Based on genus patterns, Stenamma ants are generally docile and secretive. Workers likely forage mainly in leaf litter and under bark, hunting small invertebrates. They are not known to sting and pose no danger to you. The colony probably stays hidden most of the time and won't form large visible trails. This species is best for keepers who enjoy subtle, secretive ant behavior rather than active foragers.

Frequently Asked Questions

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References