Camponotus putatus

Camponotus putatus

Camponotus putatus is a medium-sized carpenter ant endemic to Madagascar. Workers are typically 5-9mm, with the minor workers described measuring in the smaller range. This species belongs to the Formicinae subfamily, meaning they defend themselves with formic acid spray rather than a stinger. They are found only in Madagascar, specifically in the highlands and eastern rainforest regions of the island. The species was originally described by Forel in 1892 from specimens collected near Antananarivo. These ants are part of the Camponotini tribe and have been reclassified between several subgenera over the years (Myrmentoma, Calomyrmex, and Myrmonesites). They appear to prefer mid-elevation habitats, with specimens collected at 425m on the Masoala Peninsula and 875m in the Réserve Spéciale d'Anjanaharibe-Sud ^[1].

Quick Summary

• Difficulty: Medium
• Origin & Habitat: Endemic to Madagascar, found in mid-elevation rainforest habitats (425-875m) in the eastern and central regions of the island ^[1].
• Colony Type: Single-queen colonies (monogyne) based on typical Camponotus colony structure. Colony size likely reaches several hundred workers at maturity.
  • Colony: Monogyne
  • Founding: Claustral
• Size & Growth:
  • Queen: Estimated 12-15mm based on typical Camponotus queen size ranges
  • Worker: 5-9mm (minor workers)
  • Colony: Estimated 200-500 workers at maturity based on genus patterns
  • Growth: Moderate
  • Development: Estimated 6-8 weeks at optimal temperature based on typical Camponotus development (Development time is inferred from genus-level data, as species-specific measurements are not available)
• Antkeeping:
  • Temperature: Keep at 22-26°C. As a Madagascar species from mid-elevations, they prefer warm but not extreme heat. A gentle temperature gradient allows workers to regulate their conditions.
  • Humidity: Moderate to high humidity (60-80%). Madagascar's eastern rainforests provide humid conditions. Keep the nest substrate moist but allow some drier areas for the ants to choose.
  • Diapause: No true diapause required. As a tropical species from Madagascar, they do not need hibernation. However, they may show reduced activity during cooler periods.
  • Nesting: In captivity, they do well in Y-tong (AAC), plaster, or acrylic nests. Provide a dark, quiet location. They will excavate in gypsum or sand setups. A outworld for foraging is essential.
• Behavior: Typical Camponotus temperament, generally calm and not aggressive toward keepers. Workers are active foragers, primarily at night. They are omnivorous, accepting sugar sources (honey, sugar water) and protein (insects). They have formic acid for defense rather than a stinger. Escape risk is moderate due to their medium size, standard barrier methods work well.
• Common Issues: tropical species may struggle in cool rooms below 20°C, slow founding phase can lead to beginner impatience and overfeeding, wild-caught colonies may harbor parasites that cause colony collapse, medium size means they can squeeze through standard test tube openings if not properly sealed, mold can develop if humidity is too high without adequate ventilation

Housing and Nest Setup

Camponotus putatus does well in standard ant keeping setups. Y-tong (AAC) nests work excellently because they provide the dark, humid environment these ants prefer. Plaster nests with built-in water chambers maintain humidity well. Acrylic nests are also suitable. The nest should be placed in a quiet area away from direct sunlight and vibrations. A connected outworld allows workers to forage. For founding colonies, a test tube setup with a water reservoir works well, the queen will seal herself into a chamber and raise her first nanitic workers there. Once the colony reaches 20-30 workers, you can consider moving them to a larger formicarium. Ensure all connections between nest areas are secure, while not tiny, these ants can still escape through small gaps.

Feeding and Diet

Like most Camponotus species, C. putatus is omnivorous. They readily accept sugar sources including honey, sugar water, and maple syrup. For protein, offer small insects like fruit flies, small mealworms, or cricket pieces. In the wild, they forage for honeydew from aphids and scale insects, plus hunt small invertebrates. Feed sugar water constantly (via a cotton ball or feeder) and offer protein 2-3 times per week. Remove uneaten protein after 24-48 hours to prevent mold. During the founding stage, the queen does not eat, she survives entirely on her stored fat reserves. Once workers arrive, they will collect food and regurgitate it to feed the colony (trophallaxis).

Temperature and Seasonal Care

Maintain temperatures between 22-26°C for optimal colony health and brood development. As a Madagascar mid-elevation species, they prefer warmth but not extreme heat. Room temperature in most homes (20-24°C) is generally acceptable, but you may need a heating cable or mat on one side of the nest to reach the ideal range. Create a gentle temperature gradient so ants can move between warmer and cooler areas. Unlike temperate species, they do not require hibernation or diapause. However, they may show slightly reduced activity during cooler months. Avoid temperatures below 18°C for extended periods, as this can weaken the colony. A thermometer helps you monitor conditions accurately.

Humidity and Water Needs

Camponotus putatus needs moderate to high humidity (60-80%). In their natural Madagascar rainforest habitat, humidity is consistently high. Keep the nest substrate moist but not waterlogged. A water reservoir connected to the nest (like in a test tube setup) provides a constant moisture source through capillary action. Check the nest regularly, if you see condensation constantly pooling, it's too wet, if the substrate looks completely dry, it's too dry. Good ventilation helps prevent mold while maintaining humidity. You can also lightly mist the outworld occasionally, but avoid spraying directly into the nest.

Colony Founding and Growth

Like all Camponotus species, C. putatus is claustral, the queen seals herself into a chamber and raises her first workers alone without foraging. She uses stored fat reserves to produce eggs and feed the developing larvae. The first workers (nanitics) are typically smaller than normal workers. This founding phase can take 1-2 months or longer, depending on temperature. During this time, the queen needs complete darkness and minimal disturbance. Do not feed the founding queen, she will not eat. Once the first workers emerge, they will begin foraging, and you can start offering food. Colony growth is moderate, expect several months to reach 50 workers, and a year or more to reach 100+. Patience is key with carpenter ants.

Behavior and Handling

Camponotus putatus has a calm temperament typical of carpenter ants. They are not aggressive and rarely bite. When threatened, they defend with formic acid spray, this can irritate eyes and skin but is not dangerous. Workers are primarily nocturnal foragers but will activity during the day if food is available. They communicate through chemical trails and will recruit nestmates to good food sources. These ants are medium-sized (5-9mm), making them easy to observe. They are not strong climbers on smooth surfaces, so standard barrier methods (fluon, talcum powder) work well for containment. They do not have a true stinger, so sting pain is not a concern.

Frequently Asked Questions

References