Polyrhachis punctillata

Quick Summary

• Difficulty: Medium
• Origin & Habitat: Native to the Indomalaya and Palaearctic regions – recorded from India (Gujarat, Karnataka, Kerala, Manipur, Meghalaya, Tamil Nadu, West Bengal), Sri Lanka (wet, dry, and intermediate zones), Nepal, Bhutan, Myanmar, and China (Yunnan, Sichuan, Guangxi, Hainan) ^{[1][2][3][4][5]}. They have been collected in coconut plantations, agricultural land, and forested areas up to 1400 m elevation ^[7][4][6].
• Colony Type: Colony structure is not documented. Based on common Polyrhachis patterns, they likely form single-queen (monogyne) colonies, but this is inferred and not confirmed.
• Size & Growth:
  • Queen: Size data unavailable – no measurements found in literature.
  • Worker: 5-6 mm ^[1]
  • Colony: Unconfirmed – estimated up to several hundred workers based on genus patterns.
  • Growth: Unknown – no data available for this species.
  • Development: Estimated 6-10 weeks based on related Formicinae (e.g., Camponotus) patterns – direct studies are lacking. (Development depends on temperature, warmer conditions (around 24-26 °C) likely speed it up.)
• Antkeeping:
  • Temperature: No precise data. They occur from tropical lowlands to 1400 m elevation ^[6][4], so they likely tolerate a range of roughly 20-28 °C. Offer a temperature gradient so the ants can choose their comfort zone.
  • Humidity: No specific data, but they are recorded from both wet and dry zones ^[3]. Provide moderate humidity – keep the nest substrate slightly moist but not waterlogged, and keep the outworld drier.
  • Diapause: Unknown. Their presence in temperate China ^[5] suggests a winter rest may be beneficial, but it’s not confirmed. If kept in a temperate climate, consider a cool period around 10-15 °C for 2-3 months during winter, but watch for signs of stress.
  • Nesting: In the wild they nest under stones, in soil, and in rotting wood. In captivity, use a Y-tong (AAC) or plaster nest with chambers scaled for their 5-6 mm workers. Provide a ground-nesting setup rather than an arboreal one.
• Behavior: Calm and non-aggressive – they are a subordinate Camponotini species ^[6]. Workers forage on the ground and readily take honey baits ^[7]. They are not known to sting, like other Formicinae, they spray formic acid if threatened. Their small size (5-6mm) means they can squeeze through tiny gaps – secure all connections and use tight-fitting lids to prevent escapes.
• Common Issues: limited documentation means you must adjust care based on your colony's behavior – be flexible, small workers can escape through gaps – seal all tubes and nest connections carefully, founding behavior is unconfirmed – if you have a queen, leave her undisturbed in a dark space for the first two months, wild-caught colonies may carry mites or parasites – quarantine new arrivals for a few weeks, diapause needs are unknown – if activity drops in winter, provide a cool period, but if they remain active you can skip it

Housing and Nest Setup

Polyrhachis punctillata is ground-nesting, so avoid tree-nest setups. A Y-tong (AAC) or plaster nest with chambers sized for 5–6 mm workers works well. The nest should have a gradient of moisture – one damp corner and a drier area. Connect it to an outworld where you’ll feed them. Because workers are small, ensure all tubes and lids fit tightly – they can slip through a 1 mm gap. Use fluon or oil barriers on the outworld walls as extra security. ^[1]

Feeding and Diet

Like most Formicinae, their diet is omnivorous. They accept honey or sugar water as a carbohydrate source – honey baits worked well in field studies ^[7]. For protein, offer small insects like fruit flies, pinhead crickets, or pieces of mealworm. Feed protein 2–3 times per week and keep sugar available always. Remove uneaten prey after 24 hours to prevent mold. They may also tend aphids if given the chance. ^[7]

Temperature and Seasonal Care

Since they occur from hot lowlands to 1400 m in the Himalayas ^[6][4], they can handle a range. In captivity, aim for 22–26 °C, but they likely tolerate 20–28 °C without issue. Use a heat mat on one side of the nest to create a gradient. Diapause is uncertain – they are found in temperate China ^[5], so a 2–3 month winter rest at 10–15 °C may be helpful if your colony slows down in winter, but it’s not mandatory. Watch their behavior and adjust. ^[6][4][5]

Colony Founding and Growth

Founding method is unconfirmed. If you have a queen, assume she needs a quiet, dark, and undisturbed founding chamber. Based on related Formicinae, the first workers may emerge after 6–10 weeks in warm conditions. Do not check on her during this time – the stress can kill her. Once nanitics appear, offer small amounts of sugar water and tiny protein (e.g., fruit fly legs) every few days. Colony growth rate is unknown, but with steady feeding you may reach dozens of workers in the first year.

Behavior and Temperament

These ants are calm and non-confrontational – they are classified as a subordinate Camponotini species ^[6]. Workers forage on the ground and low vegetation. They react to threats by spraying formic acid (like other Formicinae) rather than stinging. They are not aggressive towards humans and rarely bite unless handled roughly. Their small size and quick movements make them fun to watch, but they do need secure housing. ^[6][7]

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