Pheidole macclendoni

Pheidole macclendoni

Pheidole macclendoni is a small but striking ant species native to the American Southwest, found in Arizona and central to western Texas. These ants belong to the 'bicarinata complex' within the pilifera group, characterized by their large forward-set eyes. The species is weakly polymorphic, meaning they have both regular majors and even larger supermajors, a relatively rare trait. Majors measure about 1.5mm in head width, while supermajors can reach nearly 2.8mm, making them quite impressive for a Pheidole species. Their coloration ranges from reddish yellow in the larger castes to light brown in the minor workers. In the wild, they nest in sandy-gravelly desert soil, with colonies marked by small nest entrances.

Quick Summary

• Difficulty: Medium
• Origin & Habitat: Native to the southwestern United States, specifically Arizona and central to western Texas. They inhabit sandy-gravelly desert environments and have been found nesting in open soil and beneath grass clumps ^[1].
• Colony Type: Colony structure is not well documented in scientific literature. Based on typical Pheidole patterns, this species likely forms single-queen colonies (monogyne), though this requires confirmation for this specific species.
  • Colony: Monogyne
  • Founding: Claustral
• Size & Growth:
  • Queen: Not directly measured in available literature, estimated based on related Pheidole species at 8-10mm
  • Worker: Minor: 0.62mm head width (about 3mm total), Major: 1.50mm head width (about 5mm), Supermajor: 2.74mm head width (about 7-8mm)
  • Colony: Unknown from direct studies, related desert Pheidole species typically reach several hundred workers
  • Growth: Moderate, typical for desert Pheidole species
  • Development: 6-10 weeks at optimal temperature (Development time is estimated based on typical Pheidole genus patterns. Actual timing may vary based on temperature and conditions.)
• Antkeeping:
  • Temperature: Keep at room temperature or slightly warm, around 22-26°C. Desert species prefer warmer conditions but can tolerate typical indoor temperatures. A heating cable on one side of the nest creates a gradient
  • Humidity: Low to moderate. These are desert ants that prefer drier conditions. Keep the nest substrate slightly moist but allow it to dry between waterings. Avoid overly damp conditions
  • Diapause: Likely yes, winged queens were found in December, suggesting a winter reproductive period. Provide a cool period around 10-15°C for 2-3 months during winter
  • Nesting: In captivity, they do well in test tubes initially, then can be moved to Y-tong (AAC) nests or plaster formicariums. They prefer干燥 conditions and will do well in nests with some dry areas. The nest should have narrow chambers suitable for their small size
• Behavior: These ants are generally calm and not particularly aggressive. Like other Pheidole species, they have majors that serve as defense and food processing specialists. They are active foragers that search for seeds and small insects. Their small size (especially minors at 3mm) means escape prevention is important, use fine mesh and tight-fitting lids. The supermajors are impressive but the minors do most of the day-to-day work ^[1].
• Common Issues: desert species are sensitive to overwatering, keep conditions relatively dry, small minor workers can escape through standard mesh, use fine mesh barriers, winter nuptial flight timing means queens fly in cold months, plan accordingly if you want to catch a queen, slow colony growth can frustrate beginners, patience is needed, supermajors are rare in young colonies, don't be concerned if you only see regular majors at first

Housing and Nest Setup

Pheidole macclendoni can be started in a simple test tube setup, which works well for the founding colony. The test tube should have a water reservoir at one end, with cotton separating the water from the ants. Keep the tube in a dark, quiet location during the founding stage. Once the colony reaches 20-30 workers, you can consider moving them to a proper formicarium. Y-tong (AAC) nests work well for Pheidole species because they provide humidity control and allow you to observe the colony. Alternatively, a plaster nest with a hydration chamber can work, but given this species' desert nature, err on the side of drier conditions. Whatever nest you choose, ensure it has tight-fitting connections and use fluon or other barriers on any openings, as these tiny ants can squeeze through surprisingly small gaps. ^[1]

Feeding and Diet

In the wild, Pheidole macclendoni likely forages for seeds and small insects, like other members of the genus. In captivity, offer a varied diet including protein sources (small crickets, mealworms, fruit flies) and carbohydrates (sugar water, honey, or commercial ant nectar). Seeds are often accepted and provide enrichment. Feed small prey items appropriate to the size of your workers, the tiny minors can only handle very small pieces. A protein source twice weekly and constant access to sugar water works well for established colonies. Remove any uneaten prey after 24 hours to prevent mold issues.

Temperature and Seasonal Care

As a desert species from Arizona and Texas, Pheidole macclendoni prefers warmer conditions. Keep the nest area at 22-26°C, which is typical room temperature in most homes. If your home runs cool, a small heating cable placed on one side of the nest can provide additional warmth. Create a temperature gradient so the ants can choose their preferred spot. The unusual December nuptial flight timing (queens have been found winged in late December) suggests this species has different seasonal timing than many ants, they may be most active in cooler months. However, for captive colonies, normal room temperature year-round is usually fine, with a slight cooling period (10-15°C) for 2-3 months in winter to simulate natural seasonal rest. ^[1]

Behavior and Colony Structure

This species is weakly polymorphic, meaning it has two distinct major castes: regular majors and the larger supermajors. The minors do most of the foraging and brood care, while majors defend the colony and help process larger food items. Supermajors are rare and typically only appear in well-established colonies. The species is not particularly aggressive and tends to be calm in captivity. Workers are active foragers that will search out food throughout the outworld. Their small size means they can be overlooked, but they are quite visible when moving due to their contrasting colors. Watch for the majors, their large heads make them unmistakable.

Growth and Development

Colony growth is moderate. The first workers (nanitics) will typically emerge 6-10 weeks after the queen lays eggs, depending on temperature. These first workers are smaller than mature workers but will immediately begin caring for the next brood. As the colony grows, you should see more majors appearing. The supermajors, when they eventually appear, are impressive specimens with heads nearly 3mm in width. Growth rate depends on feeding and temperature, warmer conditions within the acceptable range generally speed development. Avoid the temptation to overfeed, as uneaten food creates mold risks that can kill the colony.

Frequently Asked Questions

References