Myrmica salina

Myrmica salina

Myrmica salina is a small to medium-sized Myrmica ant native to steppe regions of West Siberia, Kazakhstan, and parts of Central and Eastern Europe. Workers measure 4.7-5mm and queens reach 5-6mm, with a distinctive angular lobe at the base of their antennae that helps distinguish them from similar species like M. scabrinodis ^[1]. Their name comes from the Latin word for salt ('salina'), reflecting their remarkable adaptation to saline habitats like salt marshes and the margins of salt lakes ^[2].

What makes M. salina truly special is its extraordinary tolerance for harsh conditions. This species thrives in environments that would kill other ants, it handles extreme humidity fluctuations, temperature variations, and high soil salinization better than any other Myrmica species ^[3]. In salt marsh habitats, it can become the dominant ant species and aggressively defends its territory against other Myrmica ^[4]. It's also an important host for endangered butterfly species like Maculinea teleius (Scarce Large Blue), making it ecologically significant beyond just being an ant ^[5][6].

Quick Summary

• Difficulty: Medium
• Origin & Habitat: Native to West Siberia, Kazakhstan, and Central/Eastern Europe (Romania, Austria, Hungary, Slovenia, Croatia, Turkey, Georgia, Azerbaijan, Kyrgyzstan). Inhabits wet, saline steppe habitats including salt marsh margins, floodplain meadows, and occasionally xerothermous grasslands. Requires areas with high salt tolerance and tolerance for humidity fluctuations ^[1][3][7].
• Colony Type: Likely monogyne (single queen colonies) based on typical Myrmica patterns. No specific research on colony structure found, but related species in the scabrinodis group typically have single-queen colonies.
  • Colony: Monogyne
  • Founding: Claustral
• Size & Growth:
  • Queen: 5-6mm ^[2]
  • Worker: 4.7-5mm ^[2]
  • Colony: Unknown for this specific species, but related Myrmica typically reach several thousand workers. Estimated moderate colony size.
  • Growth: Moderate, typical Myrmica growth rate
  • Development: 6-10 weeks at optimal temperature (estimated based on related Myrmica species) (Development time follows typical Myrmica patterns. Queens are claustral, they seal themselves in and raise the first brood alone on stored body fat.)
• Antkeeping:
  • Temperature: Keep at 20-24°C. This is a warmth-loving (thermophilic) species that does well in warmer conditions ^[3]. Room temperature is often suitable, but a slight warming gradient can encourage activity and brood development.
  • Humidity: Tolerant of humidity fluctuations, one of their key adaptations. Keep nest substrate moderately moist but allow for some drying periods. They handle variable moisture better than most ants. Avoid waterlogging but don't let it dry out completely.
  • Diapause: Yes, as a temperate species from regions with cold winters, they require a winter rest period. Reduce temperature to around 5-10°C for 3-4 months (October-March) to simulate hibernation.
  • Nesting: Natural nesting sites include soil under stones, in compacted ground near salt lakes, and in floodplain areas. In captivity, standard test tubes or Y-tong nests work well. Provide a moisture gradient so ants can choose their preferred humidity zone.
• Behavior: M. salina is notably aggressive toward other Myrmica species, especially in their preferred saline habitats where they can dominate ^[4]. Workers are active foragers and will readily hunt small insects. They have a functional stinger but rarely use it against humans, the sting is mild and comparable to other Myrmica. Escape risk is moderate, they're not particularly small but active, so standard barrier methods work well.
• Common Issues: colonies can fail if kept too wet during winter hibernation, ensure proper drainage and allow substrate to dry slightly, this species is rare in the hobby and wild-caught colonies may have parasites that kill them in captivity, slow establishment means beginners may lose patience, give them time to build numbers, they're aggressive toward other Myrmica, keep them separated from other ant species, habitat specificity means they may not thrive in typical ant-keeping setups without proper salinity considerations

Housing and Nest Setup

Myrmica salina adapts well to standard captive setups, but they do best when given choices. Test tube setups work perfectly for founding colonies, the queen seals herself in a water tube chamber and raises her first workers there. For established colonies, Y-tong (acrylic) nests or plaster nests work well. The key is providing a humidity gradient: keep one side moist and allow the other to dry slightly. This lets the ants self-regulate, which is important given their natural tolerance for humidity fluctuations. Avoid overly wet or waterlogged conditions, especially during hibernation. A small outworld for foraging allows workers to hunt and collect food. ^[3][7]

Feeding and Diet

Like other Myrmica species, M. salina is omnivorous with a preference for protein. Feed them small insects like fruit flies, pinhead crickets, or mealworms twice weekly. They also readily accept sugar water, honey, or diluted syrup, this is especially important once the colony reaches 20+ workers. In the wild, they often form mutualistic relationships with root aphids for honeydew, so offering sugar sources helps replicate this. Keep a constant supply of sugar water once the colony is established. Remove uneaten prey after 24-48 hours to prevent mold. ^[4]

Temperature and Seasonal Care

M. salina is a thermophilic species that prefers warmer conditions, aim for 20-24°C during the active season. Room temperature is usually suitable, but you can provide a gentle heat gradient using a heating cable on one side of the nest if needed. During winter (roughly October to March), they require a diapause period: reduce temperatures to 5-10°C and reduce feeding. Place them in a cool basement, garage, or refrigerator (not freezer). Keep the nest slightly moist during hibernation, not wet, not dry. Do not feed during diapause. Return them to warm conditions gradually in spring. ^[3][7]

Behavior and Colony Dynamics

This species is notably aggressive toward other Myrmica species, particularly in optimal habitat. Workers are active foragers and will readily leave the nest to search for food. They communicate through chemical trails and can mobilize workers to food sources efficiently. The colony will establish distinct foraging patterns once established. Unlike some Myrmica, they don't typically form supercolonies, each nest maintains its own territory. Queens are long-lived and can survive for 15+ years in good conditions. Workers live for 1-3 years depending on their role. ^[4][3]

Ecological Significance

M. salina plays an important role as a host for endangered butterfly species. It's a primary host for Maculinea teleius (Scarce Large Blue) in parts of Hungary, Poland, Czech Republic, Slovakia, and Ukraine ^[5][6]. It's also a secondary host for Maculinea alcon and Maculinea rebeli ^[8][9]. This means wild colonies contribute to conservation of these butterflies. If you're keeping this species, you're caring for an ecologically important species, though please never release captive colonies as they could disrupt local ecosystems.

Frequently Asked Questions

References