Messor hismai

Quick Summary

• Difficulty: Medium
• Origin & Habitat: Saudi Arabia and United Arab Emirates, desert and semi-arid mountainous regions at approximately 1120m elevation ^[1][2]. The type locality is Wadi Hisma, a desert wadi system in northwestern Saudi Arabia ^[3].
• Colony Type: Unconfirmed, colony structure has not been documented for this species.
• Size & Growth:
  • Queen: Size data unavailable for this species
  • Worker: Approximately 5.3mm total length ^[4]
  • Colony: Unknown, not documented in available research
  • Growth: Unknown, not studied for this species
  • Development: Unknown, no species-specific data available (Development has not been studied for this species)
• Antkeeping:
  • Temperature: Keep at 24-28°C. These ants come from a hot desert region and tolerate warm conditions. A heating cable on one side of the nest creates a useful gradient.
  • Humidity: Low to moderate, desert species prefer dry conditions. Keep nest substrate relatively dry. Allow portions to dry out completely between waterings.
  • Diapause: Unknown, not documented for this species. Specimens have been collected in March, suggesting seasonal activity patterns.
  • Nesting: Use dry nest materials, plaster, Y-tong, or soil nests work well. Provide a dry outworld area for seed storage.
• Behavior: Typical harvester ant behavior, they forage for seeds and store them in granaries within the nest. Workers are moderately aggressive and will defend the colony. They are not extreme escape artists due to their moderate size, but standard escape prevention is recommended. They are diurnal foragers, active during cooler parts of the day in their natural hot habitat.
• Common Issues: seed mold, stored seeds can develop mold if humidity is too high, check and remove affected seeds, colonies may decline if only fed protein without sufficient seed offerings, slow founding, queens may take months before first workers emerge, test tube flooding can be fatal, ensure water reservoirs are appropriately sized

Nest Preferences and Housing

Messor hismai does well in dry nest setups typical for harvester ants. Plaster nests, Y-tong formicariums, or soil nests all work well. The key is providing dry conditions, these ants come from arid desert environments and do not tolerate damp conditions. The nest chambers should be appropriately sized for their approximately 5mm workers. In the wild, they likely nest in soil or sand. The outworld should be spacious enough for seed storage behavior and foraging activity. ^[4]

Feeding and Diet

As a Messor species, M. hismai is primarily a seed-harvester. They collect seeds from plants and store them in granaries within the nest. In captivity, offer a variety of seeds, grass seeds, millet, sunflower seeds (cracked), and commercial ant seeds work well. Additionally, provide protein sources like small insects (fruit flies, small crickets, mealworms) especially for growing colonies and queens. Sugar water or honey can be offered occasionally, though seeds should form the bulk of their diet. Remove uneaten seeds periodically to prevent mold. ^[4]

Temperature and Seasonal Care

These ants come from the hot Arabian Peninsula, so they prefer warm conditions. Keep the nest area at 24-28°C, with access to warmer areas if they choose to move there. A heating cable placed on one side of the nest creates a useful temperature gradient. The seasonal care for this specific species is not documented. Specimens have been collected in March, suggesting spring activity. Most Messor species benefit from a mild cool period in winter, but this is not confirmed for M. hismai. ^[2][3]

Behavior and Colony Dynamics

Messor hismai exhibits typical harvester ant behavior. Workers forage actively during the day, collecting seeds and carrying them back to the nest. The species is described as monomorphic, meaning all workers are similar in size without major/caste differentiation. Colonies are defensive and will attack threats to the nest. Founding behavior is unconfirmed for this species, claustral founding is typical for the genus but has not been documented specifically for M. hismai. ^[4]

Frequently Asked Questions

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References