Stigmacros anthracina

Quick Summary

• Difficulty: Unknown
• Origin & Habitat: Australia, originally described from Mt Lofty near Adelaide, SA, in southwestern Australia found only in the Darling Range south of Perth ^[2]. Inhabits the South Western Botanical Province (SWBP) region.
• Colony Type: Unknown, no published data on queen number or social structure for this species.
• Size & Growth:
  • Queen: Size data unavailable, no published measurements.
  • Worker: Size data unavailable, no published measurements.
  • Colony: Unknown, no published data on colony size.
  • Growth: Unknown
  • Development: Unknown, no published data. (Timing likely dependent on temperature, but nothing is confirmed for this species.)
• Antkeeping:
  • Temperature: Unknown, no published data. For temperate Australian ants, a range of 22-26°C during the active season is a reasonable starting point, but actual needs are unconfirmed.
  • Humidity: Unknown, no published data. Based on typical Melophorini habitat (likely relatively dry soils), keep substrate lightly moist but allow some drying between waterings. Adjust based on colony behavior.
  • Diapause: Likely required given temperate origin, but duration and temperature are unconfirmed. A 2-3 month rest at 10-15°C is typical for many Australian temperate ants, but this is speculative.
  • Nesting: Unknown, no published nest site data. Based on genus patterns, likely nests in soil or under stones. A test tube setup works for founding, established colonies can be moved to Y-tong or naturalistic setups with soil substrate.
• Behavior: Behavior is unconfirmed. As a formicine ant, it does not sting but sprays formic acid. Workers are small, so escape prevention requires fine mesh. Activity likely increases with warmth.
• Common Issues: limited distribution in the wild makes wild colonies hard to find, check with specialized ant suppliers., specific temperature, humidity, and diapause needs are unconfirmed, closely observe colony health and adjust gradually., as a small ant, escape prevention requires very fine mesh or barriers., this species is rarely kept in captivity, so there is no established keeper experience to rely on.

Housing and Nest Setup

Because specific nesting habits are unknown, a flexible approach is best. A standard test tube setup provides a secure founding environment: fill the tube one-third with water, plug with cotton, and place the queen in the dark. Once a colony has 30-50+ workers, you can move it to a Y-tong or naturalistic nest with soil substrate. Since workers are small, ensure chambers and passages are appropriately sized. Use very fine mesh on all openings to prevent escapes.

Feeding and Diet

No published diet data exists for Stigmacros anthracina. Based on typical Formicinae feeding habits, offer sugar water or honey water as a constant energy source and provide small insects (e.g., fruit flies, small mealworms) for protein 2-3 times per week. Remove uneaten prey after 24-48 hours to prevent mold. Adjust based on colony acceptance.

Temperature and Seasonal Care

Temperature needs are unconfirmed. As a temperate Australian species, it likely experiences seasonal changes. During the active season, try 22-26°C with a gradient so workers can choose. A winter diapause is probably necessary, typical guidelines for temperate ants (2-3 months at 10-15°C) may apply, but this is speculative. Reduce feeding during diapause and keep the colony cool but above freezing. ^[2]

Behavior and Temperament

No specific behavioral data is available. As a formicine ant, it sprays formic acid for defense and does not sting. Workers are likely timid and avoid confrontation due to their small size. Foraging probably occurs individually or in small groups, seeking nectar and small prey. Observe your colony to learn its habits.

Frequently Asked Questions

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References