Nesomyrmex stramineus

Quick Summary

• Difficulty: Medium
• Origin & Habitat: Southern Africa (South Africa and Eswatini), found in savanna woodland and Afromontane forest, nesting in dead wood on trees ^[3][2].
• Colony Type: Colony structure is unconfirmed due to rarity and lack of published data. Based on typical Nesomyrmex patterns, likely single-queen colonies.
• Size & Growth:
  • Queen: Size data unavailable, no documented queen measurements.
  • Worker: ~2.8 mm total length ^[1]
  • Colony: Unknown, only known from few collection events, considered rather rare ^[2]
  • Growth: Unknown, no development data available
  • Development: Estimated 6-8 weeks based on typical Myrmicinae development patterns at warm temperatures (No direct development data exists, estimate based on genus-level patterns for small Myrmicinae ants.)
• Antkeeping:
  • Temperature: Aim for 22-26°C, they come from warm African habitats and likely prefer stable temperatures within this range ^[3][2].
  • Humidity: Keep the nest substrate consistently moist but not waterlogged, they nest in dead wood in forest environments, suggesting moderate humidity ^[3][2].
  • Diapause: Unknown, no published data on overwintering. Southern African populations may not require true diapause due to mild winters.
  • Nesting: Prefer dead wood on trees, in captivity, use wood-based nests like Y-tong or naturalistic setups with rotting wood pieces ^[3][2].
• Behavior: These are small, generally peaceful ants. They are not known to be aggressive. Their defense mechanism involves a modified stinger used to smear venom onto enemies, typical of Myrmicinae ants. Their tiny size means escape risk is high, excellent prevention is essential. They are arboreal nesters and may prefer elevated positions.
• Common Issues: tiny size makes escape likely without fine mesh barriers, rarely kept species means limited husbandry knowledge, be prepared to experiment, no published data on founding behavior or colony development timelines, wild-caught colonies may be difficult to establish due to rarity and specific habitat needs, small colony sizes mean losses have bigger impact, every ant matters

Housing and Nest Setup

Nesomyrmex stramineus is a tiny arboreal species that naturally nests in dead wood on trees ^[3][2]. In captivity, use Y-tong nests with chambers scaled to their small size, or naturalistic setups with rotting wood or cork. Chambers should be tight and narrow to prevent escapes. Escape prevention is critical, use fine mesh barriers and seal all connections, as they can squeeze through very small gaps.

Feeding and Diet

Like most small Myrmicinae, they likely eat honeydew and small prey. In captivity, provide sugar water or honey water constantly, and offer small soft-bodied prey like fruit flies or springtails 2-3 times per week. Remove uneaten prey within 24-48 hours to prevent mold.

Temperature and Humidity

Aim for 22-26°C with a gentle gradient, as they come from warm African habitats ^[3][2]. Keep nest substrate moderately moist but not saturated, reflecting their forest environment ^[3][2].

Colony Establishment and Growth

This species is rarely kept, with no published data on founding. Based on typical Myrmicinae patterns, queens may use claustral founding, but this is unconfirmed. Growth rate is unknown, and colonies likely grow slowly. Be patient with founding colonies.

Seasonal Care

Diapause requirements are unknown. Southern Africa has mild winters, so a slight temperature reduction to 18-20°C during winter may be appropriate, but avoid cold below 15°C. Reduce feeding during cooler periods but do not stop entirely.

Defense Mechanism

As a member of Myrmicinae, Crematogastrini, this species uses a smear defense mechanism with a modified stinger to wipe venom onto enemies rather than piercing flesh. This is typical for the subfamily and tribe.

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