Nylanderia pini

Quick Summary

• Difficulty: Medium
• Origin & Habitat: Dominican Republic, higher elevation pine and mixed pine forests. Nests occur in leaf litter at tree bases, inside rotting wood, under rocks, and in soil ^[2].
• Colony Type: Colony structure is unconfirmed. Based on typical Nylanderia genus patterns, colonies likely contain multiple queens, but this has not been directly documented for this species.
• Size & Growth:
  • Queen: ~4.1 mm ^[1]
  • Worker: ~2.4 to 2.8 mm ^[1]
  • Colony: Unknown, no colony size data available
  • Growth: Unknown, no development data available
  • Development: Estimated 6 to 8 weeks based on typical Nylanderia genus patterns at optimal temperature (No direct development data exists for this species. Keepers should observe their colony's progress and adjust conditions accordingly.)
• Antkeeping:
  • Temperature: Keep stable, roughly low-to-mid 20s°C. This species comes from higher elevation forests, which are cooler and more humid than lowland areas. A gentle temperature gradient allows the colony to self-regulate.
  • Humidity: Keep the nest substrate consistently moist but not waterlogged. Provide a water tube or damp cotton as a moisture source.
  • Diapause: Unknown, no specific data on overwintering requirements. The higher elevation origin suggests some tolerance for cooler conditions, but a true diapause may not be required in captivity.
  • Nesting: Prefers moist nest materials like soil, rotting wood, or plaster. A Y-tong or 3D-printed nest with a water reservoir works well for founding colonies. Avoid dry conditions.
• Behavior: Workers are fast-moving and will readily forage for food. Escape prevention is critical because their small size means they can squeeze through tiny gaps. They are not known to be particularly aggressive. Workers likely forage individually rather than using tandem running. The species belongs to the Formicinae subfamily, which means they lack a functional sting and instead spray formic acid if threatened.
• Common Issues: small size means escapes are likely without fine mesh barriers, no documented development data makes timing uncertain for beginners, higher elevation origin means they may not tolerate prolonged high temperatures, humidity requirements are not well-documented, monitor for drying, wild-caught colonies may carry parasites that are difficult to treat

Origin and Natural Habitat

Nylanderia pini lives only in the Dominican Republic, specifically in higher elevation pine and mixed pine forests. The type locality sits at Parque Nacional Armando Bermúdez around 1037 meters elevation, where specimens were collected from moss and soil under a tree. You will find this ant nesting in leaf litter at tree bases, inside rotting wood, under rocks, and directly in the soil. The species name comes from the Latin word for pine, reflecting the dominant trees in these forests ^[1]. The higher elevation location suggests this species prefers cooler and more humid conditions compared to lowland tropical ants.

Identification and Distinguishing Features

Workers of Nylanderia pini are generally dark brown with lighter brownish-yellow to yellow antennae segments, mandibles, and leg joints. The most reliable identification features are the gastral pubescence pattern and the propodeal fringe. Pubescence appears only on the middle to back half of the first abdominal segment, leaving the front section bare. A distinct fringe of hair usually lines the top of the propodeum. Workers measure 2.40 to 2.80 mm in total length, and their antennae typically exceed 0.8 mm in length. You can separate this species from the similar Nylanderia fuscaspecula by checking size and antenna length, as Nylanderia pini is generally larger. Nylanderia metacista workers always show dense pubescence across the first two abdominal segments, which never happens in Nylanderia pini ^[1].

Housing and Nesting

In captivity, you should provide a moist nest environment. Based on their natural nesting preferences, a test tube setup with a water reservoir works well for founding colonies. For established colonies, a Y-tong, plaster, or soil nest maintains appropriate humidity. Keep the nest substrate consistently moist but not waterlogged. Because workers measure under 3 mm, escape prevention is critical. Use fine mesh barriers and ensure all connections between the outworld and nest are secure. Provide a separate outworld for foraging with access to sugar water and protein sources. ^[2]

Feeding and Diet

While specific dietary requirements for Nylanderia pini have not been documented, Nylanderia species in general are omnivorous and will accept sugar sources and protein. You should offer sugar water or honey as a constant energy source. Provide protein such as small insects like fruit flies, small mealworms, or crickets two to three times per week. Remove any uneaten food after 24 hours to prevent mold. Fresh water should always be available. ^[2]

Temperature and Seasonal Care

Based on the higher elevation origin of this species, they likely prefer cooler conditions than typical tropical ants. Aim for temperatures in the low-to-mid 20s°C range. Avoid prolonged exposure to temperatures above 30°C. A heating cable on one side of the nest creates a temperature gradient, allowing the colony to self-regulate. Specific overwintering or diapause requirements remain unknown. The higher elevation origin suggests some tolerance for cooler conditions. Monitor colony activity closely. If workers become sluggish, slightly lower temperatures may be appropriate, but avoid cold shocking the colony. ^[1]

Growth and Development

The development timeline for Nylanderia pini has not been directly documented. Queens measure 4.1 mm in total length, which suggests they carry substantial fat reserves for independent founding. Workers emerge at 2.40 to 2.80 mm. Because no specific development data exists for this species, you should observe your colony's progress and adjust conditions accordingly. Nanitics, which are the first workers to emerge, are typically smaller than normal workers and may take slightly less time to develop. ^[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