Camponotus evae

Camponotus evae

Camponotus evae is a small to medium-sized black ant native to Western Australia, part of the discors species group ^[1]. Major workers have a distinctive straight-sided head when viewed from the front, while minor workers typically have darker appendages compared to the similar C. lownei species which has rich reddish-brown legs and antennae ^[2]. This ant is found across southwestern Australia and has also been recorded on Barrow Island ^[3]. Workers are equipped with six or more teeth on their mandibles, and minor workers have a distinct row of erect hairs on the first gastral segment ^[4].

Quick Summary

• Difficulty: Medium
• Origin & Habitat: Western Australia, found across the southwestern region and Barrow Island. Inhabits dry to moderately damp habitats typical of the region.
• Colony Type: Likely single-queen colonies based on typical Camponotus patterns. Colony structure is not specifically documented for this species.
  • Colony: Monogyne
  • Founding: Claustral
• Size & Growth:
  • Queen: Estimated 9-12mm based on Camponotus genus
  • Worker: Major workers 6-8mm, minors 4-6mm
  • Colony: Likely several hundred workers at maturity based on typical Camponotus colony development
  • Growth: Moderate, Camponotus species typically grow steadily but not rapidly
  • Development: Estimated 6-10 weeks based on typical Camponotus development at warm temperatures (Development time depends on temperature, warmer conditions accelerate growth. First workers (nanitics) are typically smaller than normal workers.)
• Antkeeping:
  • Temperature: Keep around 22-26°C with a gentle gradient. Australian ants generally tolerate room temperature well but grow better with mild warmth.
  • Humidity: Moderate humidity around 50-70%. Allow the nest to dry slightly between water additions. These ants come from a Mediterranean climate with dry summers and wet winters.
  • Diapause: Likely requires a winter rest period of 2-3 months at cooler temperatures (10-15°C) based on Western Australian climate patterns.
  • Nesting: Y-tong (AAC) nests work well for this species. Provide a test tube setup for founding colonies with a dark cover. Naturalistic setups with soil or plaster also suitable.
• Behavior: Generally calm and not aggressive. Like most Camponotus, they are not active foragers but instead recruit nestmates to food sources. Escape prevention is important, use fluon on edges and ensure any connections between outworld and nest are secure. Major workers can defend the colony with their strong mandibles.
• Common Issues: colonies may grow slowly initially, patience is needed during the claustral founding phase, escape prevention should be maintained even though they are not particularly small ants, winter dormancy is important for long-term colony health, skipping hibernation can weaken colonies, overfeeding can lead to mold problems, remove uneaten food promptly, founding colonies are vulnerable, keep them in a quiet, dark location until first workers arrive

Housing and Nest Setup

For a founding colony, a simple test tube setup works best. Fill a test tube about one-third with water, push a cotton ball in to create a water reservoir, then add the queen. Cover the tube with something dark to reduce stress. The queen will seal herself into a chamber and remain there until her first workers emerge. Once you have 10-20 workers, you can connect the test tube to an outworld (foraging area) using tubing. For established colonies, a Y-tong (acrylic) nest provides good visibility and humidity control. Alternatively, a plaster or naturalistic soil nest works well. Ensure any connections between nest and outworld have escape barriers, a ring of fluon around the rim of the outworld is effective.

Feeding and Diet

Camponotus evae, like other carpenter ants, is omnivorous. Offer sugar water or honey as a constant energy source, a small drop every few days is sufficient. For protein, provide small insects like fruit flies, small mealworms, or crickets. Feed protein once or twice per week. Remove any uneaten prey after 24 hours to prevent mold. In the wild, these ants would forage for honeydew from aphids and hunt small insects. They typically recruit nestmates to larger food discoveries through chemical trails.

Temperature and Seasonal Care

Maintain temperatures around 22-26°C for optimal growth. A heating cable on one side of the nest can create a gentle gradient, allowing ants to regulate their own temperature by moving between warmer and cooler areas. During winter (roughly December through February in the Southern Hemisphere), reduce temperatures to 10-15°C to simulate their natural seasonal cycle. This winter rest period is important for colony health and may trigger reproductive behavior in spring. Do not feed during deep hibernation but ensure a small water source is available.

Behavior and Colony Dynamics

Camponotus evae shows typical carpenter ant behavior, they are not aggressive toward keepers and generally move at a calm pace. Major workers (soldiers) are larger and have stronger mandibles, serving primarily for defense and cracking hard food. Minor workers handle most tasks including foraging, caring for brood, and tending to the queen. When a colony is disturbed, you may see majors at the entrance ready to defend. They communicate through chemical signals and will recruit nestmates to food sources. Unlike some ants, they do not form supercolonies or display extreme aggression.

Frequently Asked Questions

References