Myrmica curvispinosa

Quick Summary

• Difficulty: Medium
• Origin & Habitat: Endemic to Himachal Pradesh, India. Found in patchy cedar (Cedrus) forests at altitudes of 2479-2700 meters. The area is surrounded by cultivated fields and apple orchards. Nests are located under stones in moist soil ^[2][1][3].
• Colony Type: Single-queen colonies (monogyne). Ergatoid replacement reproductives have been documented in wild colonies, these are wingless workers that can become reproductive if the queen dies ^[1][4].
• Size & Growth:
  • Queen: 6.63mm total length ^[4]
  • Worker: 5.80mm total length ^[4]
  • Colony: Colony size data unavailable for this species
  • Growth: Moderate
  • Development: Development data unavailable for this specific species (Related Myrmica species typically take 6-10 weeks from egg to first worker at room temperature, but this has not been confirmed for M. curvispinosa.)
• Antkeeping:
  • Temperature: Keep cool, aim for 18-22°C. This is a temperate Himalayan species adapted to cooler mountain conditions. Avoid warm temperatures above 25°C ^[2][1].
  • Humidity: High humidity required. They nest in moist soil under stones in the wild, so keep the nest substrate consistently damp but not waterlogged. Provide a gradient with slightly drier areas for workers to escape excess moisture.
  • Diapause: Yes, mandatory. This species experiences harsh winters in the Himalayas with snow from October to mid-March. You must provide a cold hibernation period of 3-4 months at temperatures between 2-8°C ^[2].
  • Nesting: Prefers nests in soil or plaster setups that retain moisture. Natural nesting is under stones in damp soil, so test tube setups work well for founding colonies. Provide a moist nest chamber, these ants do not tolerate dry conditions.
• Behavior: Generally typical Myrmica temperament, not particularly aggressive but will defend the nest if threatened. Workers are active foragers, typically hunting for small insects and tending aphids for honeydew. They have a functional stinger but rarely use it on keepers due to their small size. Escape risk is moderate, standard barrier methods work well.
• Common Issues: high altitude species needs genuine hibernation, colonies that don't cool down properly will fail to thrive, requires consistently moist nest conditions, drying out can be fatal, limited availability since this is a recently described species from a specific Himalayan region, cold temperature requirements make them unsuitable for warm rooms, development data is unavailable, making it harder to track colony progress

Housing and Nest Setup

Myrmica curvispinosa does well in test tube setups for founding colonies, then can be moved to plaster or acrylic nests as the colony grows. The key requirement is moisture retention, these ants come from moist soil habitats under stones in the Himalayan mountains. Use a test tube with a water reservoir that keeps the cotton consistently damp. For established colonies, a plaster nest works well because it holds humidity naturally. Avoid dry setups entirely, this species will not survive in conditions that would suit desert ants. Provide a small outworld for foraging and place the nest in a cooler area of your ant room. The nest should be positioned away from direct heat sources and vibrations. ^[2][1]

Feeding and Diet

Like other Myrmica species, these ants are omnivorous with a preference for protein. Feed them small insects like fruit flies, pinhead crickets, or mealworms. They will also accept sugar water or honey as an energy source. In the wild, they likely forage for small invertebrates and tend aphids for honeydew in their cedar forest habitat. Offer protein prey 2-3 times per week for a growing colony, and keep a sugar water source available at all times. Remove any uneaten prey after 24 hours to prevent mold issues.

Temperature and Seasonal Care

This is the most critical aspect of keeping Myrmica curvispinosa successfully. They come from high-altitude temperate Himalayas where temperatures are cool year-round. The collection sites recorded 23°C, but this was during active season, they experience much colder winters with snow cover from October to mid-March. Keep the colony at 18-22°C during the active season. During winter, you must provide a genuine hibernation period of 3-4 months at 2-8°C. This can be done in a refrigerator, basement, or garage that stays cold but above freezing. Do not skip hibernation, it is essential for colony health and reproduction. A heating cable may be needed in cold rooms, but use it sparingly and only on part of the nest to create a temperature gradient. ^[2][1]

Colony Founding

The founding behavior of Myrmica curvispinosa has not been specifically documented. The presence of ergatoids (wingless replacement queens) has been documented in wild colonies, which means if the primary queen dies, the colony may be able to produce replacement reproductives from existing workers rather than dying outright. First workers (nanitics) will be smaller than normal workers but will begin expanding the nest and foraging once they emerge. ^[1][4]

Behavior and Temperament

Myrmica curvispinosa displays typical Myrmica behavior, workers are active, alert, and will readily defend the nest if disturbed. They are not among the most aggressive ants but should be respected. Workers forage individually rather than in massive raids, searching for small prey items and honeydew. They communicate using chemical trails and will recruit nestmates to good food sources. The colony will establish clear territorial boundaries around their nest. When keeping them, standard escape prevention works well, these ants are not particularly adept at climbing smooth surfaces like glass, though they are small enough to slip through very small gaps.

Frequently Asked Questions

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References