Temnothorax politus

Quick Summary

• Difficulty: Medium
• Origin & Habitat: Southern Arizona, USA and Sonora, Mexico. Found in low-to-mid elevation desert habitats, almost always restricted to washes, irrigation canals, and other riparian areas. Collected up to 4,500 feet elevation in sky islands ^[1][2][3].
• Colony Type: Unconfirmed, no published data on queen number. Most Temnothorax species have a single queen per colony, but this has not been verified for Temnothorax politus.
• Size & Growth:
  • Queen: Size data unavailable, total body length not recorded in the literature.
  • Worker: 2-2.4 mm ^[1]
  • Colony: Unknown, no data available for this species.
  • Growth: Unknown, no specific data. Inferred from genus patterns: likely moderate.
  • Development: Unknown, no specific data. Inferred from related Temnothorax species: roughly 6-10 weeks at warm temperatures (20-24°C). (Development time is an estimate based on genus patterns, no direct measurements exist for T. politus.)
• Antkeeping:
  • Temperature: Keep between 20-24°C. This species is sensitive to heat and avoids daytime foraging in its natural habitat ^[1]. Never expose them to temperatures above 30°C.
  • Humidity: Provide a moisture gradient. They nest in riparian areas, so keep part of the nest substrate slightly moist but allow dry zones. Avoid waterlogging.
  • Diapause: Probably required. As a species from temperate North America with distinct seasons, a winter rest period is likely. Give 2-3 months at 10-15°C, but this is inferred and not confirmed by research.
  • Nesting: Small, tight cavities work best. Y-tong (AAC) or plaster nests with narrow chambers, or test tube setups. They naturally nest in hollow twigs, under bark, and in fallen cottonwood branches ^[1]. Avoid large open spaces.
• Behavior: Shy and non-aggressive ^[1]. Nocturnal or crepuscular, most active at night or in dim light ^[1]. Like other members of the Crematogastrini tribe, they have a modified stinger used to smear venom rather than pierce, but they are no threat to humans. Small size means standard escape prevention is fine.
• Common Issues: heat sensitivity is critical, temperatures above 30°C can kill the colony., nocturnal activity means you may not see them foraging during the day., small colony size leads to slow growth that can frustrate beginners., wild-caught colonies may carry parasites or mites.

Housing and Nest Setup

Temnothorax politus does best in small, enclosed spaces that mimic the hollow twigs and bark cavities they use in nature ^[1]. A Y-tong (AAC) or plaster formicarium with narrow chambers works well. Test tube setups are fine for founding and small colonies, just make sure the tube is not too large. They have been collected from fallen cottonwood branches and hollow twigs in gallery forests and desert wash banks ^[1], so you can add a piece of bark or a small twig to the outworld for a natural feel. Keep the nest dark and avoid disturbance during daylight hours since they are nocturnal. A small outworld connected to the nest lets you feed them without exposing the whole colony to light.

Feeding and Diet

Likely omnivorous, but no specific feeding studies exist for this species. Offer small protein sources like fruit flies, pinhead crickets, or tiny mealworms 2-3 times per week. They probably also take honeydew from aphids in the wild, so provide a constant sugar source like honey or sugar water. Remove uneaten prey after 24-48 hours to prevent mold. Adjust portions based on colony size and how quickly food is eaten. ^[1]

Temperature and Seasonal Care

Keep the nest area at 20-24°C. This species is specifically noted as sensitive to heat and avoids foraging during the hottest parts of the day in its desert habitat ^[1]. Never let temperatures go above 30°C. Use a heating cable on one side of the nest to create a gentle gradient, but always give them a cooler escape area. During winter, provide a diapause period of 2-3 months at 10-15°C, this is inferred from the species' temperate distribution, not confirmed by research. Cool them gradually over 1-2 weeks to avoid shock.

Behavior and Observation

Workers are shy and not aggressive ^[1]. They are nocturnal or crepuscular, most active at night or during twilight, as shown by pitfall trap collections ^[1]. This means you will see little daytime activity. They likely use tandem-running to recruit nestmates to food, a common behavior in the genus. They belong to the Crematogastrini tribe, which uses a modified flattened stinger to smear venom onto enemies rather than piercing. This is not a threat to humans. Observe them in the evening or under red light to avoid disturbing them.

Colony Founding

There is no published data on how Temnothorax politus queens found colonies. Many Temnothorax species are claustral, the queen seals herself in and raises the first workers on stored fat reserves, but this is not confirmed for T. politus. If you have a queen, give her a small, dark, enclosed space like a test tube or tight Y-tong chamber. Do not disturb her for at least 4-6 weeks. Once the first workers appear, start offering small sugar water and tiny prey. Without more research, founding must be approached carefully and observed. ^[1]

Frequently Asked Questions

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References