Camponotus horrens

Quick Summary

• Difficulty: Medium
• Origin & Habitat: Philippines (Luzon and Negros islands) in the Indomalaya region. Found in tropical forest habitats, typically in leaf litter and vegetation ^[2].
• Colony Type: Likely single-queen (monogyne) colonies based on typical Camponotus patterns.
• Size & Growth:
  • Queen: ~12-15mm, inferred from Camponotus genus patterns for reticulatus group species
  • Worker: ~5-10mm (polymorphic, major and minor workers), inferred from genus patterns
  • Colony: Up to several hundred workers, estimated based on related species in the reticulatus group
  • Growth: Moderate, typical for tropical Camponotus
  • Development: Estimated 6-8 weeks at optimal tropical temperatures (25-28°C), inferred from typical Camponotus patterns (Development time inferred from typical Camponotus genus patterns. Warm temperatures accelerate development.)
• Antkeeping:
  • Temperature: Keep nest area at 25-28°C. Provide a gentle temperature gradient allowing workers to self-regulate. Tropical species, they need consistent warmth year-round.
  • Humidity: Moderate to high humidity. Keep nest substrate consistently moist but not waterlogged. Provide a water tube for drinking.
  • Diapause: No, as a tropical species from the Philippines, they do not require hibernation. Maintain warm temperatures year-round.
  • Nesting: In captivity, they do well in Y-tong (AAC) or plaster nests. Provide narrow chambers scaled to their size. They will use provided spaces. Keep nest dark and quiet.
• Behavior: Generally calm and non-aggressive for a Camponotus species. Workers are diurnal and actively forage during daylight hours. They lack a functional sting but can bite and spray formic acid as defense. Major workers can deliver a mild bite if threatened. Escape prevention should be moderate, standard barriers (Fluon) are recommended.
• Common Issues: tropical species may struggle in air-conditioned rooms or cool climates, supplemental heating is often needed, colonies can stall if temperatures drop below 22°C consistently, overfeeding can lead to mold problems in enclosed nests, queen mortality during founding is common, ensure she has a quiet, dark location, wild-caught colonies may harbor parasites that can decimate the colony

Housing and Nest Setup

Camponotus horrens does well in standard formicarium setups. Y-tong (AAC) nests work excellently, the narrow chambers help them feel secure. Plaster nests with hydration chambers maintain appropriate humidity. The key is providing chambers scaled to their size with adequate darkness, these ants prefer quiet, dark spaces for their nest. A small outworld connected to the nest allows for foraging. Use standard escape prevention like Fluon on rim edges, though they are not particularly aggressive escape artists like some tiny species.

Feeding and Diet

Like other Camponotus species, they are omnivorous. Offer sugar water (1:1 ratio) or honey water as a constant energy source. Protein is essential for brood development, offer small insects like fruit flies, small mealworms, or crickets. Feed protein 2-3 times per week, adjusting based on colony size. They are diurnal foragers, so place food in the outworld during daylight hours when workers are most active. Remove uneaten prey after 24-48 hours to prevent mold. A constant water source (test tube with cotton) should always be available.

Temperature and Seasonal Care

As a tropical species from the Philippines, Camponotus horrens needs warm temperatures year-round. Keep the nest area at 25-28°C for optimal brood development. A heating cable on one side of the nest creates a gradient workers can self-regulate within. Place the heating on top of the nest, not underneath, to avoid excessive drying. Room temperature alone is often insufficient, monitor with a thermometer. They do not enter diapause or hibernation. Avoid cool rooms, air conditioning vents, or drafty locations. Consistent warmth is key to maintaining an active, growing colony.

Colony Founding

Camponotus horrens is likely claustral, the queen seals herself in a small chamber and raises her first brood without leaving to forage. She relies entirely on stored fat reserves (metabolic energy) to survive and feed the larvae. Provide a quiet, dark location for the founding chamber. Expect 6-10 weeks before the first nanitic (first) workers emerge. Do not disturb the queen during this period, vibrations or light can cause her to abandon or eat her brood. Once workers emerge, they will begin foraging and the colony enters the growth phase.

Behavior and Temperament

This species is relatively calm compared to some more aggressive Camponotus. Workers are diurnal and will actively search for food during daylight hours ^[2]. They are not particularly defensive, they lack a functional sting but can bite and spray formic acid as their defense mechanism. Major workers may bite if the nest is severely disturbed. The mimicry of Myrmicaria brunnea in the wild suggests they benefit from predator avoidance through appearance, which aligns with their generally non-confrontational temperament. They are moderate foragers and will establish regular trails once a food source is discovered.

Growth and Development

Colony growth follows typical Camponotus patterns. After founding, the queen lays eggs which develop through larval and pupal stages to become workers. The first workers (nanitics) are typically smaller than normal workers. As the colony grows, larger major workers develop. Growth rate is moderate, expect several months to reach 50 workers, and a year or more to reach several hundred. Brood development is temperature-dependent: warmer temperatures (within range) speed development, while cooler temperatures slow it. A healthy queen can live for 15+ years, producing workers continuously.

Frequently Asked Questions

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References