Polyrhachis templi

Polyrhachis templi

Polyrhachis templi is a medium-sized ant species belonging to the subgenus Campomyrma. Workers are typically 6-8mm with a distinctive spiny appearance characteristic of the Polyrhachis genus, they have spines projecting from the mesosoma (the middle body section). Their coloration is typically dark brown to black with metallic highlights. This species is found across parts of the Asia-Pacific region, where they nest in subterranean locations or within rotting wood. Like other Polyrhachis species, they spin silk to help construct their nests, using it to bind together leaf litter, soil particles, or plant debris into protective chambers. They have cocooned pupae, which is notable since many ant species in the region produce naked pupae.

Quick Summary

• Difficulty: Medium
• Origin & Habitat: Asia-Pacific region. This species nests in subterranean chambers or within rotting wood in forested areas ^[1][2].
• Colony Type: Colony structure is not well documented. Based on typical Polyrhachis patterns, colonies likely establish with a single founding queen (monogyne), though some related species can form multi-queen colonies.
  • Colony: Monogyne
  • Founding: Claustral
• Size & Growth:
  • Queen: Estimated 10-12mm based on genus patterns for medium-sized Polyrhachis
  • Worker: 6-8mm based on genus patterns
  • Colony: Likely several hundred workers at maturity based on related species
  • Growth: Moderate, estimated 2-3 months to first workers based on typical tropical Polyrhachis development
  • Development: Estimated 6-10 weeks at tropical temperatures (25-28°C) based on genus-level data for related Campomyrma species (Development time is estimated from genus patterns since species-specific data is not available. Cocooned pupae may extend development slightly compared to naked-pupae species.)
• Antkeeping:
  • Temperature: Keep at 25-28°C. Tropical species require warm conditions year-round. A heating cable on one side of the nest creates a temperature gradient allowing ants to self-regulate.
  • Humidity: Moderate to high humidity (60-80%). These ants prefer damp substrate conditions in their nest area. Keep the nest substrate consistently moist but not waterlogged, with some drier areas available for the ants to choose.
  • Diapause: No, as a tropical species, they do not require hibernation. Maintain warm temperatures year-round.
  • Nesting: Provide a nest that mimics their natural habitat, either a Y-tong (AAC) style formicarium with moist substrate chambers, or a naturalistic setup with rotting wood pieces and soil. They do well in plaster nests or acrylic nests with dirt chambers. The nest should have multiple chambers connected by narrow passages.
• Behavior: Polyrhachis templi is generally calm and not overly aggressive. Workers are active foragers that search for food both on the ground and on vegetation. They are not known for being particularly defensive, but they will bite if threatened. Their spiny appearance serves as a physical defense. Escape risk is moderate, they are not tiny ants but can squeeze through small gaps if motivated. Use standard escape prevention measures. They communicate through chemical trails and may use tandem-running to recruit nestmates to food sources.
• Common Issues: tropical temperature requirements mean colonies can struggle in cooler climates without heating, colonies may decline if humidity drops too low, dry conditions are harmful, slow founding phase means patience is required, queens can take months to raise first workers, cocooned pupae require stable conditions, disturbance during pupal development can cause issues, wild-caught colonies may carry parasites that can devastate captive colonies

Nest Preferences and Housing

Polyrhachis templi naturally nests in subterranean chambers or within rotting wood. In captivity, they do well in Y-tong (AAC) formicariums with dirt chambers, plaster nests with moisture chambers, or naturalistic setups. The key is providing moist substrate conditions, they prefer their nest material to be damp but not waterlogged. A multi-chamber setup works well, allowing the colony to distribute brood across different humidity zones. If using a naturalistic setup, include pieces of rotting wood or cork bark buried in moist soil. The nest should have narrow passages between chambers, as these ants feel secure in snug spaces. Avoid very dry environments or nests that dry out quickly. ^[1][2]

Feeding and Diet

Polyrhachis templi is an omnivorous species that accepts a variety of foods. In captivity, offer protein sources such as small insects (fruit flies, small crickets, mealworms), and provide sugar sources like honey water or sugar water regularly. They will also eat small amounts of seeds or other organic matter. Feed them small prey items appropriate to their worker size, they can handle prey roughly equal to their own body size. Offer protein 2-3 times per week, and keep a sugar source available at all times. Remove uneaten prey after 24-48 hours to prevent mold issues. Fresh water should always be available.

Temperature and Seasonal Care

As a tropical species, Polyrhachis templi requires warm temperatures year-round. Keep the nest area at 25-28°C for optimal brood development. Temperatures below 22°C can slow colony growth significantly, and prolonged cool conditions may harm the colony. Use a heating cable or heat mat on one side of the nest to create a temperature gradient, this allows ants to move between warmer and cooler areas as needed. Monitor with a thermometer placed near the nest. Unlike temperate species, they do not require a winter rest period. Maintain consistent warmth throughout the year to support continuous colony growth.

Behavior and Colony Dynamics

Polyrhachis templi workers are active and curious foragers. They establish chemical trails to food sources and will recruit nestmates efficiently. The spiny projections on their bodies serve as a defense mechanism, when threatened, they can wedge themselves into crevices using these spines, making them difficult to extract. They are generally peaceful toward keepers and rarely display aggressive behavior unless their nest is directly threatened. Workers have moderate longevity compared to other ant species. The colony will expand gradually, with the queen producing workers continuously once established. Brood development should be visible within weeks of founding, look for eggs, then larvae, then cocooned pupae developing in sequence.

Frequently Asked Questions

References