Melophorus microtriches

Melophorus microtriches

Melophorus microtriches is a small to medium-sized ant native to Western Australia, belonging to the Melophorus biroi species group and fieldi complex. Workers measure 0.73-1.57mm in head width, with majors being notably larger than minors. The species has a distinctive matt (dull) appearance with reticulate (net-like) sculpturing on the tibia and antennal scape, short stout erect setae on the metatibia, and long spindly legs. This ant is one of the few Melophorus species that has adapted to urbanized habitats, commonly found in relictual woodland, rehabilitated road verges, and disturbed areas like paddocks and street verges around Perth. It is a ground forager, nesting in various substrates including gravel, red soil, and grey sand.

Quick Summary

• Difficulty: Medium
• Origin & Habitat: Western Australia, primarily in the Perth metropolitan area. Found in natural habitats including mulga, riparian woodland, and tall woodland, as well as disturbed areas like paddocks and street verges ^[1].
• Colony Type: Colony structure is unconfirmed. Based on genus patterns, likely single-queen (monogyne) colonies, though this has not been directly studied.
• Size & Growth:
  • Queen: Unconfirmed, no queen measurements available
  • Worker: Minor workers: 0.73-1.57mm head width,0.69-1.28mm head length ^[1]
  • Colony: Unknown, no colony size data available
  • Growth: Unknown, no development data available
  • Development: Unknown, no direct development data available. Based on typical Melophorus patterns, estimate 6-10 weeks at warm temperatures. (Development timeline is unconfirmed for this species. Related Melophorus species in the biroi group typically develop in 6-10 weeks under optimal conditions.)
• Antkeeping:
  • Temperature: Keep warm, around 24-30°C. This species is adapted to the warm climate of Western Australia and will do best with gentle heating. A heating cable on one side of the nest creates a suitable gradient.
  • Humidity: Low to moderate. These ants come from relatively dry Australian habitats. Keep nest substrate moderately dry to slightly moist, avoid damp conditions. Provide a water source in the outworld but do not over-humidify the nest.
  • Diapause: Likely no diapause required. This species is from a warm climate and does not appear to have a winter dormancy requirement. However, slight cooling during winter months may be beneficial.
  • Nesting: Ground-nesting species. In captivity, a naturalistic setup with a soil or sand substrate works well, or a Y-tong/plaster nest with dry to moderately moist conditions. Provide a deep substrate layer for nesting.
• Behavior: This is a ground-foraging ant that is active and relatively fast-moving. Temperament is not well-documented but Melophorus species are typically not aggressive. They are generalist foragers that likely scavenge and collect honeydew. Escape prevention should be moderate, workers are small but not extremely tiny. They adapt well to urban environments in the wild, suggesting good adaptability to captive conditions.
• Common Issues: limited data, this species has not been well-studied in captivity, so care parameters are estimates based on genus patterns, humidity management, keeping conditions too damp may cause problems since they come from dry habitats, no confirmed colony structure, queen behavior and colony founding are unconfirmed, slow to establish, wild-caught colonies may take time to adapt to captive conditions

Housing and Nest Setup

Melophorus microtriches is a ground-nesting ant that prefers dry to moderately moist conditions. A naturalistic setup with a deep substrate layer (red soil, grey sand, or a mix) works well for this species. You can also use a Y-tong (acrylic) nest with chambers scaled to their size. Since they come from urbanized habitats in Western Australia, they are adaptable and can tolerate a range of conditions. Provide a water test tube in the outworld for drinking water. Because they are ground foragers, ensure the outworld has a substrate layer where they can forage naturally. ^[1]

Feeding and Diet

Based on genus patterns, Melophorus microtriches is likely a generalist forager that accepts sugar sources and protein. Offer sugar water, honey, or diluted honey regularly as a carbohydrate source. For protein, provide small insects like fruit flies, small crickets, or mealworms. In the wild, they likely collect honeydew from aphids and scavenge small invertebrates. Feed every 2-3 days, removing uneaten prey after 24 hours. Adjust feeding frequency based on colony size and consumption rates.

Temperature Requirements

This species comes from the warm climate of Western Australia and requires temperatures in the 24-30°C range for optimal activity and development. Use a heating cable or heating mat on one side of the nest to create a gentle thermal gradient. Place the heating on top of the nest to avoid evaporating moisture too quickly. Room temperature may be sufficient in warm climates, but supplemental heating is recommended for cooler environments. Monitor colony activity, if workers become sluggish, increase temperature slightly. ^[1]

Humidity Management

Melophorus microtriches prefers dry to moderately moist conditions. They are found in substrates ranging from gravel to red soil and grey sand in the wild, indicating tolerance for relatively dry conditions. Keep the nest substrate on the drier side, it should feel barely damp, not wet. Provide a water source in the outworld for drinking. Avoid over-misting or keeping the nest too damp, as this can cause mold issues and stress the colony. Some slightly drier areas in the nest allow the ants to self-regulate their humidity preferences. ^[1]

Colony Establishment

Since colony founding behavior has not been documented for this species, care recommendations are based on typical Melophorus genus patterns. If you obtain a founding queen, she is likely claustral, she will seal herself in a small chamber and survive on stored fat reserves until her first workers (nanitics) emerge. Provide a small test tube setup with a water reservoir and keep it undisturbed in a warm, dark location. Once workers emerge, you can gradually introduce them to a larger setup. Wild-caught colonies may take time to adjust to captive conditions, be patient and minimize disturbances during the settling period.

Frequently Asked Questions

References