Pheidole schmalzi

Pheidole schmalzi

Pheidole schmalzi is a medium-sized ant in the genus Pheidole, part of the flavens group. Major workers measure around 5mm with a HW of 0.94mm, while minor workers are smaller at approximately 3mm. The species has a distinctive reddish-yellow to brown coloration, with the body and appendages ranging from light brown to medium brown, and the waist and gaster often appearing darker. This ant is named after Signor Schmalz, the original collector.

This species is known only from type specimens collected in Brazil (Santa Catarina and Rio de Janeiro), Bolivia, and Venezuela. Unfortunately, nothing has been documented about its biology in the wild, we don't know its nesting habits, diet, colony size, or behavior. This makes it one of the more challenging Pheidole species to keep because there's no established care protocol to reference.

Quick Summary

• Difficulty: Unknown, no documented care exists for this species
• Origin & Habitat: Santa Catarina and Rio de Janeiro, Brazil, Bolivia, Venezuela, Neotropical region
• Colony Type: Unknown, no colony structure data exists. Most Pheidole species are single-queen (monogyne) colonies, but this hasn't been confirmed for P. schmalzi.
• Size & Growth:
  • Queen: Undocumented, estimated 7-9mm based on typical Pheidole major size
  • Worker: Major: ~5mm (HW 0.94mm), Minor: ~3mm (HW 0.50mm)
  • Colony: Unknown, no colony data exists
  • Growth: Unknown, no development data exists
  • Development: Estimated 6-8 weeks based on typical Pheidole development at tropical temperatures (This is a rough estimate based on genus-level data. Actual development time is unconfirmed.)
• Antkeeping:
  • Temperature: Estimated 22-28°C based on Neotropical distribution, provide a warm area around 25°C
  • Humidity: Estimated 60-80% based on typical Brazilian ant preferences, keep substrate moderately moist
  • Diapause: Unlikely, Neotropical species typically remain active year-round
  • Nesting: Unknown, likely nests in soil or rotting wood like other Pheidole species. A standard test tube setup or acrylic nest works for founding.
• Behavior: Undocumented, no behavioral observations exist for this species. Most Pheidole species are non-aggressive, seed-harvesting ants with major workers that defend the nest. Escape risk is moderate given the ~5mm major size.
• Common Issues: no documented care exists, keepers are essentially pioneering husbandry for this species, unknown founding behavior, may have different requirements than typical claustral Pheidole, no known dietary preferences, must experiment with protein and sugar sources, risk of colony failure due to unknown specific needs, possible parasite or disease issues since wild-caught specimens may carry unknown pathogens

Why Keep Pheidole schmalzi?

Pheidole schmalzi represents a unique opportunity for experienced antkeepers who want to contribute to our understanding of this species. Since nothing has been documented about its biology, you'll be essentially pioneering the husbandry for this ant. The species is part of the flavens group, which includes several well-studied Pheidole, so you can use related species as rough guides for care. The major workers have a distinctive appearance with a large, shark-fin shaped humerus that makes them visually striking. This is a species for keepers who enjoy experimentation and documenting their observations.

Housing and Nest Setup

Since we don't know this species' natural nesting preferences, use standard Pheidole housing. For founding colonies, a test tube setup works well, fill it with water and plug the other end with cotton, providing a dark, humid chamber. The tube should be placed in a warm, quiet area away from direct sunlight. Once the colony establishes (first workers appear), you can transition to a small acrylic nest or formicarium. The major workers reach about 5mm, so chambers should be appropriately sized. Provide a water test tube as a humidity source and ensure the nest material doesn't dry out completely.

Feeding and Diet

The diet is completely unconfirmed for this species. As a Pheidole in the Attini tribe (leaf-cutter and seed-harvester ants), it likely accepts seeds and grain like other members of this group. However, the flavens group species often supplement with protein from insects. Start with standard ant foods: a sugar water or honey solution, small insects like fruit flies or mealworms, and optionally seeds. Observe what the workers accept and adjust. Feed protein 2-3 times per week and keep sugar water available at all times. Remove uneaten food after 24-48 hours to prevent mold.

Temperature and Humidity

Pheidole schmalzi comes from Brazil and Venezuela, tropical to subtropical regions. This means it likely prefers warm, humid conditions. Aim for temperatures between 22-28°C, with an ideal around 25°C. A heating cable on one side of the nest can create a gradient if your room temperature is cooler. For humidity, target 60-80%, the substrate should feel damp but not waterlogged. A water tube in the outworld helps maintain humidity. Since this is a tropical species, diapause is unlikely needed, but you might reduce temperatures slightly during winter if the colony shows reduced activity.

Colony Establishment

Since founding behavior is unconfirmed, assume this species is claustral like most Pheidole, the queen seals herself in and lives off stored fat until her first workers emerge. After mating, the queen will dig a small chamber and seal the entrance. She'll remain inside for several weeks to months while laying eggs and raising the first brood. Do not disturb her during this time. The first workers (nanitics) will be smaller than normal workers. Once they emerge, the colony becomes active and the queen will resume egg-laying. This founding period typically takes 4-8 weeks in tropical conditions, but exact timing for P. schmalzi is unknown.

Growth Expectations

Without species-specific data, growth expectations are estimates. Based on typical Pheidole development at 25°C, expect eggs to hatch in about 2 weeks, larvae to develop over 2-3 weeks, and pupae to emerge as workers in another 2 weeks, roughly 6-8 weeks from egg to first worker. Colony growth will depend on how well the ants accept your care. Start with a small colony (just the founding queen) and be patient. Pheidole colonies can eventually reach thousands of workers, but it takes time. Document your observations, they may be the first published data on this species' development.

Frequently Asked Questions