Pheidole nodus

Pheidole nodus

Pheidole nodus is a dimorphic ant species native to eastern Asia, widely distributed from India through Southeast Asia to Japan and Korea ^[1][2]. Minor workers are small (3-3.5 mm) and slender, while major workers (soldiers) have enlarged heads (4.5-5.5 mm) with distinctive flaring at the leg joints ^[1]. The species name refers to these knee-like swellings. Colonies can grow large, reaching up to 3,000 workers, and are commonly found in open lands to developed forests, nesting in soil, under stones, and in rotting logs ^[3][2]. Majors serve as repletes, storing liquid food to share with the colony, and workers gather seeds like sesame and amaranthus ^[3].

Quick Summary

• Difficulty: Easy
• Origin & Habitat: Native to eastern Asia, including Japan, Korea, Taiwan, China, Vietnam, Thailand, Sri Lanka, India, Bangladesh, and Indonesia. Found from open lands to forests, nesting in soil, under shelters, and in rotting logs ^[2][3].
• Colony Type: Single-queen colonies (monogyne). Colonies can reach up to approximately 3,000 workers ^[3].
• Size & Growth:
  • Queen:{.size-link} 5.1-6.6 mm ^[4]
  • Worker:{.size-link} Minor workers: 3-3.5 mm, Major workers: 4.5-5.5 mm ^[1]
  • Colony: Up to 3,000 workers ^[3]
  • Growth: Moderate
  • Development: Based on typical Pheidole patterns, estimated 6-8 weeks at optimal temperatures (Development time is inferred from related species, actual timing may vary with temperature and feeding)
• Antkeeping:
  • Temperature: Keep warm and stable, roughly 20-26°C. In their native range, they forage when soil temperatures exceed 4-5°C in winter ^[3].
  • Humidity: Keep the nest substrate consistently moist but not waterlogged, as they nest in soil and rotting wood ^[2].
  • Diapause: No. They remain active year-round with reduced winter foraging ^[3].
  • Nesting: Soil-nesting species. Use test tube setups for founding, and Y-tong or plaster nests with moisture for established colonies ^[2].
• Behavior: Generally peaceful toward keepers. Minor workers forage actively, while majors stay in the nest to defend and process food. They prefer protein over sugar and can be escape artists due to their small size. They engage in paving behavior when attracted to food ^[5].
• Common Issues: escape prevention is critical, minor workers are tiny and can squeeze through small gaps, colonies can grow large quickly, ensure space for expansion, parasite risk, Myrmicinosporidium durum can infect workers ^[2], overfeeding can lead to mold, remove uneaten food promptly, they prefer protein over sugar, focus on insect or meat-based foods

Housing and Nest Setup

Pheidole nodus is a soil-nesting species. Start with a test tube setup for founding colonies. Once the colony has 20-30 workers, move to a Y-tong or plaster nest with a moisture chamber. Provide a foraging area in the outworld. Because minor workers are tiny, use fine mesh and apply fluon barriers to prevent escapes ^[2].

Feeding and Diet

This species is omnivorous but prefers protein over sugar. Offer small insects, tuna, or other meat. They gather seeds in the wild, so seeds can be occasionally provided. Major workers serve as repletes, storing liquid food to share with the colony. Feed protein sources 2-3 times per week and remove uneaten food to prevent mold ^[3][5].

Temperature and Seasonal Care

Keep colonies at 20-26°C. They remain active year-round in their native range, foraging when soil temperatures exceed 4-5°C in winter. No hibernation is needed, but reduce feeding slightly during cooler months ^[3].

Colony Structure and Caste System

This is a dimorphic species with minor and major workers. Minor workers (3-3.5 mm) forage and care for brood, while majors (4.5-5.5 mm) defend the nest and process large food items. Some majors become repletes, storing liquid food. Colonies can grow to 3,000 workers, with more majors as the colony matures ^[6][7][3].

Growth and Development

Queens are 5.1-6.6 mm and raise the first brood alone. Based on typical Pheidole patterns, egg to worker might take 6-8 weeks at optimal temperatures. Growth depends on feeding and temperature, with major production increasing as the colony expands ^[4].

Behavior and Foraging

Minor workers are active foragers that prefer protein foods. They show paving behavior when attracted to food, transporting particles to create trails. They are not aggressive toward humans but can escape easily due to their small size. Use fine mesh and barriers to prevent escapes ^[5][3].

Frequently Asked Questions

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References