Tapinoma paxi

Quick Summary

• Difficulty: Expert
• Origin & Habitat: Palawan Island, Philippines, collected in a remnant forest patch at 10.45°N,119.37°E ^[1]
• Colony Type: Unknown, no colony structure has been documented
• Size & Growth:
  • Queen: Size data unavailable, no queen has been collected or described ^[1]
  • Worker: Size data unavailable, no total body length has been measured ^[1]
  • Colony: Unknown, no colony collections have been recorded ^[1]
  • Growth: Unknown, no development data exists
  • Development: Unknown, this species has never been kept in captivity ^[1] (No captive breeding data exists. Closely related Tapinoma species typically develop from egg to worker in 4-8 weeks at warm temperatures, but that is a rough guess.)
• Antkeeping:
  • Temperature: No specific data. Since Palawan has a tropical climate, aim for 24-28°C. Start in the mid‑20s and watch the colony to fine‑tune ^[1].
  • Humidity: No specific data. Palawan is humid, so keep the nest substrate moderately moist but not waterlogged, like a tropical forest floor ^[1].
  • Diapause: Unlikely, Palawan has minimal seasonal change, so no winter rest is expected, but this is unconfirmed ^[1].
  • Nesting: No data. Other Tapinoma nest in soil, under stones, or in rotting wood. Given the tiny worker size, start with a test tube or a Y‑tong nest with very fine chambers ^[1].
• Behavior: Not documented. Based on the subfamily (Dolichoderinae, tribe Tapinomini), they have no functional stinger and defend themselves by smearing sticky, foul‑smelling secretions from an anal gland. Their tiny size makes escape prevention critical, standard barriers may fail. Do not rely on sugar without testing acceptance first.
• Common Issues: no captive care information exists, this is a newly described species with zero established husbandry guidelines, tiny size makes escape likely without fine mesh barriers and tight lids, origin from tropical Philippines means they likely have no cold tolerance, keep above 20°C, no information on what they eat, diet must be determined through careful experimentation, queen and colony structure are completely unknown, so it is unclear if colonies are single‑queen or multi‑queen

Discovery and Identification

Tapinoma paxi was only described in 2025,making it one of the newest ant species available to hobbyists ^[1]. The type specimens came from a remnant forest patch on Palawan Island, collected while researchers were surveying potential prey of the critically endangered Philippine pangolin ^[1]. The species is named after Francis Ignatius Thaddeus 'Pax' R. General, the young son of the first author ^[1].

You can tell it apart from other members of the lugubre species‑group by two clear features: the compound eyes nearly touch the side of the head when you look at it from the front, and the front femur is greatly expanded ^[1]. Workers are light brown with slightly darker rear segments of the gaster and lighter legs. The whole body has a fine texture and is reflective ^[1].

The lugubre species‑group is recognized by a propodeum that rises to a distinct point above the mesonotum. Finding T. paxi on Palawan is a big eastward expansion of the known range of this group ^[1].

Housing and Escape Prevention

Because workers are very small (no total body length has been measured, but head width is around 0.5 mm), escape prevention must be extremely thorough ^[1]. A standard test tube with the cotton plug packed firmly is a good start, and applying a barrier such as Fluon or petroleum jelly to the rim helps. For the nest, use a Y‑tong (AAC) block with very narrow chambers, regular formicariums built for larger ants will have gaps they can slip through. If you make a naturalistic setup, seal every crack.

Since natural nesting preferences are unknown, begin with a test tube as a founding chamber. When the colony grows, you can try small plaster or 3D‑printed nests. Always provide an outworld for foraging that is also completely escape‑proof ^[1].

Temperature and Climate

Palawan Island has a tropical climate with temperatures usually between 24°C and 32°C year‑round ^[1]. Aim for 24-28°C inside the nest. Keep the nest away from drafts, air conditioning, and direct sunlight to avoid swings. Temperatures below 20°C should be avoided because they have no known cold tolerance.

No specific temperature requirement has been measured for this species, so start around 26°C and watch the ants. If they cluster on the warm side, the temperature is fine. If they avoid it, back off a little. Because Palawan has little seasonal change, diapause is probably not needed, but that has never been tested ^[1].

Feeding and Diet

The diet of Tapinoma paxi is completely unknown. The workers were found by sampling the forest floor for pangolin prey, which suggests they hunt small invertebrates there ^[1].

Start with the tiniest live prey you can get: Drosophila, springtails, or other micro‑arthropods. Their small size means whole mealworms or cricket pieces may be too big. Offer very small drops of honey or sugar water to test their interest, some Tapinoma accept sugar, but do not count on it. Remove uneaten food after 24-48 hours to avoid mold ^[1].

Colony Structure and Reproduction

The colony structure of Tapinoma paxi is entirely unknown. No queens have been collected, and the five known specimens (one holotype and four paratypes) are all workers taken together ^[1].

If you ever get a colony, watch to see if it has one or multiple queens. Some Tapinoma species have ergatoid (wingless) queens, but that is pure speculation here. Nuptial flight timing is unrecorded, if you ever see alates, note the conditions and share the information with others ^[1].

Frequently Asked Questions

Report an Issue

The current care sheet is based fully on literature. See inconsistencies, or something that's incorrect? Please report here, it will be resolved after review from an admin. Contributing to the blogs tab also helps providing information, to make us be able to further improve the caresheets. Thank you for your support!

References