Philidris cordata

Quick Summary

• Difficulty: Medium
• Origin & Habitat: Native to New Guinea, Indonesia (Sulawesi, Aru Islands), Singapore, and the Bismarck Archipelago ^[1][5]. Found in young secondary habitat, disturbed scrub in parks, abandoned plantation forests, mangroves, and occasionally primary forest ^[2]. Nests in fallen twigs, behind bark of dead trees, and builds semi-carton nest extensions on tree trunks ^[2].
• Colony Type: Large colonies with extensive trunk trail systems. Multiple queens suspected based on semi-carton satellite nest structures and pervasive colony networks, but colony structure is not fully documented in scientific literature ^[2].
• Size & Growth:
  • Queen: Size data unavailable, no measurements found in literature
  • Worker: Size data unavailable, no measurements found in literature
  • Colony: Large colonies, dominant in cacao agroforestry, with thousands of workers spanning multiple trees in mature colonies ^[4]
  • Growth: Moderate to fast once established
  • Development: Unknown, no data available (Development timeline has not been directly studied for this species, likely takes weeks at tropical temperatures but unconfirmed)
• Antkeeping:
  • Temperature: Maintain tropical conditions (24-28°C) year-round. This species is from warm, humid regions of New Guinea and Indonesia. A heating cable on one side of the nest can create a gradient. Avoid temperatures below 20°C for extended periods ^[2].
  • Humidity: Keep nest substrate moist but not waterlogged. These ants naturally inhabit humid tropical forests, mangroves, and disturbed scrub, mist the outworld regularly and ensure good ventilation to prevent mold. Provide a humidity gradient in the nest ^[2].
  • Diapause: No, this is a tropical species that does not require hibernation. Maintain year-round warm conditions ^[2].
  • Nesting: Provide a Y-tong (AAC), plaster, or soil nest with multiple chambers. In nature they nest in fallen twigs, behind bark, and build semi-carton structures on tree trunks. They prefer enclosed spaces with some texture to build on. Avoid dry, arid setups, they need moisture. Consider providing vertical space for trunk trail behavior ^[2].
• Behavior: Nocturnal foragers, most active at night ^[6]. Workers create extensive trunk trails made of semi-carton material on tree trunks. They are highly territorial and can displace other ant species, including invasive ones like Anoplolepis gracilipes in cacao agroforestry ^[4]. They tend honeydew-producing insects and associate with ant-plants. Escape prevention is needed, use standard barriers as workers are medium-sized and active.
• Common Issues: colonies are aggressive toward other ant species, keep isolated from other colonies., nocturnal activity means little visible movement during daylight, this is normal., high humidity requirements can lead to mold if ventilation is poor, ensure airflow., semi-carton nest building may accumulate debris and alter nest appearance over time., large colony size requires significant space and frequent feeding as they grow.

Nest Preferences and Housing

Philidris cordata naturally nests in fallen twigs, behind bark of dead trees, and builds semi-carton nest extensions on tree trunks ^[2]. In captivity, they do well in Y-tong (AAC), plaster, or soil nests with multiple chambers. The semi-carton material they create suggests they prefer textured surfaces they can work with. A formicarium connected to an outworld works well, provide vertical space to accommodate trunk trail behavior. Keep the nest humid but ensure good ventilation to prevent mold. Test tubes can be used for founding attempts but will need upgrading as the colony grows. Avoid dry, sterile setups.

Feeding and Diet

Like most Dolichoderinae, Philidris cordata is omnivorous with a preference for sugar sources. They readily accept sugar water, honey, or diluted syrup. For protein, offer small insects like fruit flies, mealworms, or crickets. In nature, they tend honeydew-producing insects and associate with ant-plants ^[2]. Feed sugar water continuously and protein 2-3 times per week. Remove uneaten prey after 24 hours to prevent mold. They are nocturnal, so offering food in the evening may increase feeding activity ^[6].

Temperature and Seasonal Care

As a tropical species from New Guinea, Indonesia, and Singapore, Philidris cordata requires warm temperatures year-round. Keep the nest area at 24-28°C. A heating cable on one side of the nest creates a gentle gradient. They do not require hibernation, maintain consistent tropical conditions. Avoid temperatures below 20°C for extended periods. Room temperature (22-26°C) is often suitable, but monitor colony activity. High humidity (70-80%) is important, mist the outworld regularly ^[2].

Behavior and Colony Dynamics

This species is nocturnal, most active at night ^[6]. Workers create extensive trunk trails made of semi-carton material, a distinctive behavioral trait. They are aggressive toward other ant species and can displace invasive ants like Anoplolepis gracilipes, making them ecologically dominant in their range ^[4]. Colonies appear to have multiple queens based on satellite nest systems, but this is not confirmed. They are associated with ant-plants like Myrmecodia beccarii, occupying domatium chambers ^[3][7]. Workers tend aphid colonies for honeydew. The semi-carton nest building may accumulate debris over time ^[2].

Ant-Plant Association

Philidris cordata is commonly found in association with the ant-plant Myrmecodia beccarii. The ants occupy the domatium (chambered tubers), providing protection in exchange for shelter. Fungal communities of orders Chaetothyriales and Capnodiales are also present in these domatia ^[7]. While not a true ant-garden species that initiates gardens, they are a secondary resident that opportunistically uses ant-gardens ^[1]. In captivity, you could potentially keep them with compatible ant-plants, though this is not necessary for successful husbandry ^[3].

Growth and Development

Colony growth is moderate to fast once established. Founding behavior is unconfirmed, and no detailed studies exist on their development timeline. Mature colonies can become very large, with thousands of workers spanning multiple nest sites. They are known to be highly abundant and dominant in agricultural landscapes like cacao agroforestry in Sulawesi, indicating strong colony growth potential ^[4][8]. Keepers should expect strong expansion once the colony is settled.

Frequently Asked Questions

Report an Issue

The current care sheet is based fully on literature. See inconsistencies, or something that's incorrect? Please report here, it will be resolved after review from an admin. Contributing to the blogs tab also helps providing information, to make us be able to further improve the caresheets. Thank you for your support!

References