Zasphinctus kouakoui

Quick Summary

• Difficulty: Expert
• Origin & Habitat: Only known from Tai National Park in Ivory Coast, West Africa, the last major intact primary forest in the region and a UNESCO World Heritage Site because of its exceptional biodiversity ^[1]. Specimens were collected from soil in primary forest at about 200 m elevation ^[1].
• Colony Type: Unconfirmed. Colony structure (single‑queen vs. multi‑queen) has not been documented. While many Dorylinae army ants have multiple queens, this cannot be assumed for Z. kouakoui.
• Size & Growth:
  • Queen: Undescribed, the queen caste has not been found or described ^[1]
  • Worker: Size data unavailable, only head and mesosoma lengths are known (head ~0.75-0.80 mm, mesosoma ~1.03-1.10 mm), total body length has not been reported ^[1]
  • Colony: Unknown, only a handful of workers have ever been collected ^[1]
  • Growth: Unknown
  • Development: Unknown, no brood has been documented for this species (No development data exists. The egg‑to‑worker timeline cannot be estimated.)
• Antkeeping:
  • Temperature: Unknown for this species. Based on the tropical rainforest climate of Tai National Park (near the equator in Ivory Coast), room temperature in the low‑to‑mid 20 °C is a reasonable starting point. Monitor colony activity and adjust as needed ^[1].
  • Humidity: Unknown. The natural habitat is primary rainforest, suggesting high humidity. Keep the nest substrate consistently moist but not waterlogged, with a gradient of moisture available ^[1].
  • Diapause: Unknown, no seasonal data exists. As a species from a tropical rainforest near the equator, diapause may not be required, but this is unconfirmed ^[1].
  • Nesting: No nesting data exists. In captivity, start with a small test tube or a Y‑tong (AAC) / plaster nest with moist substrate. The single collection was from soil in primary forest ^[1].
• Behavior: Undocumented. As a Dorylinae species, they are expected to be predatory on small arthropods, likely using raid behavior typical of army ants. Their tiny size (under 2 mm total) means escape prevention must be excellent, they can slip through standard barriers easily. No information exists on aggression, foraging patterns, or defensive behaviors.
• Common Issues: complete lack of biological data makes captive care highly speculative, queen and male castes undescribed, so colony founding cannot be studied, tiny size creates extreme escape risk, fine mesh barriers and tight seals are essential, no confirmed diet acceptance, start with small live prey like springtails and micro‑arthropods, newly described species may have specific requirements not yet discovered

Species Discovery and Taxonomy

Zasphinctus kouakoui was described in 2025,making it one of the newest ant species in the literature ^[1]. The holotype was collected in November 2019 from Tai National Park, Ivory Coast, and a few extra specimens date back to 1977 ^[1]. It belongs to the Zasphinctus sarowiwai group, which is characterized by larger body size among the genus, a thicker head in profile, and a smooth, very shiny body surface ^[1]. The species is named after Dr. Lombart Kouakou for his contributions to Ivorian myrmecology ^[1].

Identification and Morphology

Workers are very small (head length about 0.75-0.80 mm, mesosoma length about 1.03-1.10 mm) ^[1]. The head looks relatively thick when viewed from above and has a swollen underside in profile ^[1]. Unlike most relatives in the sarowiwai group, Z. kouakoui lacks a median tooth on the clypeal area ^[1]. The body surface is completely smooth and shiny, with moderately dense, deep pits (piliferous foveae) on the head and mesosoma, these pits hold hairs ^[1]. The petiole is relatively thick (about 1.1 × broader than long) and the sixth abdominal segment is short (about 1.8-2 × broader than long) ^[1]. The girdling constrictions between abdominal segments IV, V, and VI have cross‑ribbed structures ^[1].

Natural Habitat

Zasphinctus kouakoui is only known from Tai National Park in Ivory Coast, the last major intact block of primary forest in West Africa and a UNESCO World Heritage Site since 1982 ^[1]. The park hosts exceptional biodiversity with many endemic and rare species ^[1]. Specimens were collected from soil in primary forest at roughly 200 m elevation ^[1]. This species has never been found outside this single location, so it may be endemic and potentially rare.

Housing and Care

No captive care information exists for this species. Because workers are tiny (under 2 mm), you will need extremely fine mesh and tightly sealed connections to prevent escapes. A small test tube setup or a Y‑tong (AAC) / plaster nest with moist substrate is appropriate. Since the natural habitat is tropical rainforest, aim for warm temperatures (low‑to‑mid 20 °C) and high humidity. Start with small live prey such as springtails and micro‑arthropods, since nothing is known about their diet. Be prepared to experiment and document everything, this species is uncharted territory ^[1].

Behavior and Foraging

The behavior of Z. kouakoui has not been studied. As a Dorylinae army ant, it is expected to be predatory on small arthropods, possibly using group raiding ^[1]. However, the specific foraging patterns, prey preferences, and colony organization are completely unknown. The specimens were collected individually from soil, which might suggest they do not form huge raiding columns like some army ants, but this is pure speculation. Careful observation is needed for any keeper who attempts to keep this species.

Frequently Asked Questions

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References