Proformica cerdanyensis

Quick Summary

• Difficulty: Medium
• Origin & Habitat: French Pyrenees (Cerdagne region) in the Palaearctic region. Found at high elevations (1203-1615 m) in mountain habitats around Dorres, La Tour de Carol, and Enveitg ^[1]. This is a mountain species typically found above 1000 m altitude ^[2].
• Colony Type: Functionally polygynous, multiple queens per nest, all fecundated and actively laying eggs ^[1]. This means colonies naturally have several egg-laying queens working together.
• Size & Growth:
  • Queen: Unknown total length, based on Proformica genus, queens likely 6-8 mm ^[1].
  • Worker: Unknown total length, based on Proformica genus, workers likely 3-5 mm ^[1].
  • Colony: Up to several hundred workers (estimated from polygynous Proformica species) ^[1].
  • Growth: Moderate
  • Development: Unknown, specific development data is not available for this species. (As a newly described species (2022), specific development timing has not been studied.)
• Antkeeping:
  • Temperature: As a high-elevation mountain species, maintain cool conditions around room temperature (about 20 °C). Avoid temperatures above 25 °C. Provide a slight temperature gradient if possible ^[1].
  • Humidity: Maintain moderate humidity. Keep the nest substrate moist but not waterlogged. Provide a water source ^[1].
  • Diapause: Yes, this mountain species likely requires winter dormancy. For 3-4 months (November-February in the Northern Hemisphere), reduce temperatures to 5-10 °C ^[1].
  • Nesting: Nesting preferences in the wild are unconfirmed. Based on related Proformica species, they may nest in soil under stones or in rotting wood. For captive care, use a naturalistic setup with soil and flat stones, or a Y‑tong/plaster nest with moderate humidity ^[1][2].
• Behavior: Workers use formic acid spray for defense. They are active foragers and generally not aggressive. Due to their small size (3-5 mm), ensure good escape prevention, use fluon or similar barriers. Multiple queens can lead to steady colony growth.
• Common Issues: overheating is a risk, this mountain species prefers cool conditions., lack of winter hibernation can harm colony health., high humidity without ventilation can cause mold., workers can escape through very small gaps, use fluon barriers., as a newly described species, captive care knowledge is limited and experimentation may be needed.

Colony Structure and Queen Care

Proformica cerdanyensis is a functionally polygynous species, meaning multiple queens coexist in the same nest and all contribute to reproduction. This is a significant difference from many common ant species that have single queens. In the wild, colonies have been found with multiple fecundated queens, each with developed yellow bodies and mature oocytes in their ovarioles, indicating all queens actively lay eggs ^[1].

For antkeepers, this means you should not remove extra queens if present. The presence of multiple egg-laying queens is natural for this species and contributes to faster colony growth. However, this also means the colony may be more sensitive to disturbance during the founding stage. If you obtain a colony with multiple queens, maintain the existing structure rather than attempting to separate them.

Temperature and Seasonal Care

As a mountain species from the French Pyrenees (found at 1203-1615 m elevation), Proformica cerdanyensis prefers cooler temperatures than many common ant species. Keep the nest area at room temperature (around 20 °C) and avoid placing the nest in direct sunlight or near heat sources. Temperatures consistently above 25 °C may stress the colony.

This species requires a proper winter dormancy period. During winter (roughly November-February in the Northern Hemisphere), reduce temperatures to 5-10 °C and reduce feeding. This mimics the natural seasonal cycle they experience in their high-altitude Pyrenean habitat. Skipping hibernation can stress the colony and may lead to health problems over time ^[1][2].

Feeding and Nutrition

Like other Formicinae ants, Proformica cerdanyensis likely accepts a varied diet including sugar sources (honey water, sugar water) and protein (small insects, mealworms). As a newly described species, specific dietary preferences have not been documented, but they probably follow typical Formica-group feeding patterns.

Feed sugar water or honey water regularly (every few days) and provide protein prey 1-2 times per week. Remove uneaten prey after 24-48 hours to prevent mold. Ensure fresh water is always available. Start with modest portions and adjust based on colony consumption, polygynous colonies with multiple queens may have higher food requirements than single-queen colonies.

Nesting Requirements

In the wild, nesting preferences for Proformica cerdanyensis are unconfirmed. Based on related Proformica species, they may nest in soil under stones or in rotting wood. For captive care, a naturalistic setup with soil substrate and flat stones for cover works well. Alternatively, Y‑tong or plaster nests with good moisture retention are suitable.

Ensure the nest maintains moderate humidity, mountain habitats in the Pyrenees are damp. The substrate should remain consistently moist but never waterlogged. Good drainage is important to prevent flooding. Provide a water tube connected to the nest for drinking water. Ventilation should be adequate to prevent mold while maintaining humidity ^[1].

Handling and Colony Maintenance

Proformica cerdanyensis workers are small (3-5 mm) and active. When maintaining the colony, avoid disturbing the queens unnecessarily. As a polygynous species, the colony structure depends on queen cooperation, and excessive disturbance could stress the colony.

Use standard escape prevention methods, workers use formic acid spray for defense, so they are not aggressive, but their small size allows them to escape through tiny gaps. Apply fluon or similar barriers to prevent escapes. When cleaning or feeding, work quickly but gently to minimize stress. Monitor for mold in naturalistic setups and maintain proper humidity levels.

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