Temnothorax anacanthus

Temnothorax anacanthus

Temnothorax anacanthus is a small, bicolored ant belonging to the rottenbergii species group. Workers have a distinctive appearance with a dark brown to black head and gaster contrasting against a light brown to reddish brown mesosoma (middle body section). This species is one of three spineless species in its group and reaches approximately 3-4mm in worker size ^[1]. The species is endemic to Morocco, found from the Atlantic coast to the Atlas Mountains up to Ifrane ^[2]. In the wild, they nest under stones in open shrubland (matorral) with sparse vegetation of Calycotome villosa and Pistacia lentiscus, often in areas with little ground litter and surrounded by farmland ^[1].

This species is closely related to T. hesperius (found in the Canary Islands) and T. lailae, from which it can be distinguished by its bicolored pattern and geographic distribution. As a Moroccan endemic, T. anacanthus represents a rewarding species for keepers interested in keeping ants from North Africa.

Quick Summary

• Difficulty: Medium
• Origin & Habitat: Endemic to Morocco, from the Atlantic coast to the Atlas Mountains up to Ifrane ^[2]. Found in open matorral (shrubland) habitat, nesting under stones in areas with Calycotome villosa and Pistacia lentiscus vegetation, typically lacking ground litter ^[1].
• Colony Type: Single-queen colonies (monogyne) based on typical genus patterns. Colony size likely reaches several hundred workers at maturity.
  • Colony: Monogyne
  • Founding: Claustral
• Size & Growth:
  • Queen: Estimated 5-6mm based on genus patterns for Temnothorax species ^[1]
  • Worker: Approximately 3-4mm ^[1]
  • Colony: Likely several hundred workers at maturity based on typical genus size
  • Growth: Moderate, typical for temperate litter ants
  • Development: Estimated 6-10 weeks at optimal temperature based on related Temnothorax species ^[1] (Development time varies with temperature, warmer conditions within range accelerate development)
• Antkeeping:
  • Temperature: Keep at 20-24°C. Provide a temperature gradient so ants can self-regulate. Morocco experiences warm summers and mild winters, so this species tolerates a range from roughly 18-26°C ^[1].
  • Humidity: Moderate humidity around 50-60%. Their natural habitat in Moroccan shrubland is relatively dry. Allow the nest to dry partially between waterings ^[1].
  • Diapause: Yes, this is a temperate species from a region with distinct seasons. Provide a winter rest period of 8-12 weeks at 10-15°C during winter months ^[1].
  • Nesting: Naturalistic setups with flat stones or soil chambers work well, reflecting their natural nesting under stones. Y-tong (AAC) nests or plaster nests with tight chambers scaled to their small size are suitable in captivity ^[1].
• Behavior: Generally peaceful and non-aggressive. Like other Temnothorax, they are active foragers that search for small prey and honeydew. Workers are small but agile. They may show mild alarm responses but are not defensive. Escape prevention is important due to their small size, use fine mesh barriers and tight-fitting lids ^[1].
• Common Issues: escape prevention is critical due to their tiny size, they can squeeze through standard test tube cotton, colonies may struggle if humidity is too high, their natural habitat is relatively dry, winter dormancy is required, failing to provide diapause can weaken or kill colonies, slow founding phase, claustral queens may take weeks to seal in and raise first workers, wild-caught colonies may carry parasites that can decimate captive populations

Housing and Nest Setup

Temnothorax anacanthus is a small species that needs appropriately scaled housing. In the wild, they nest under stones in relatively dry shrubland, so your setup should mimic these conditions. A Y-tong (AAC) nest with narrow chambers works well, as does a plaster nest or a naturalistic setup with flat stones laid on soil. The chambers should be tight, these tiny ants feel exposed in large open spaces. Test tubes can work for founding colonies but may need modification to prevent escapes due to their small size. Use a water tower or hydration system that allows you to control moisture without flooding the colony. A small outworld area for foraging completes the setup ^[1].

Feeding and Diet

Like most Temnothorax, this species is omnivorous and will accept a variety of foods. Offer sugar water or honey water as a constant energy source. For protein, provide small live prey such as fruit flies, pinhead crickets, or mealworm pieces. They also eat honeydew, so if you keep aphids, the ants will tend them. Feed small amounts 2-3 times per week, removing uneaten prey after 24 hours to prevent mold. During the founding stage, the queen does not forage, she survives entirely on her stored fat reserves until her first workers (nanitics) emerge ^[1].

Temperature and Seasonal Care

Keep your colony at 20-24°C during the active season. A temperature gradient is ideal, place a heating cable on one side of the nest so workers can move between warmer and cooler areas. This species is from Morocco, which has warm summers but also experiences cool winters. During winter (roughly November through February in the Northern Hemisphere), reduce temperature to 10-15°C to provide their required diapause. Do not feed during diapause and minimize disturbance. Return to normal temperatures gradually in spring to trigger activity ^[1].

Colony Development and Growth

A newly mated queen will seal herself into a small chamber and lay eggs. She feeds the larvae from her own body reserves until the first workers emerge, these initial workers (nanitics) are typically smaller than mature workers. After the nanitics arrive, the colony enters a slow growth phase as the queen continues laying and more workers hatch. Expect 6-10 weeks from egg to first worker at optimal temperature, though this is estimated based on related species. Growth is moderate, a healthy colony may reach 100 workers within the first year and several hundred at maturity. Patience is key with this genus, as founding colonies develop slowly ^[1].

Behavior and Observation

Temnothorax anacanthus is a peaceful species that is enjoyable to watch. Workers are active foragers that will venture out to collect food. They communicate through chemical signals and may use tandem running (one worker leading another) to direct nestmates to food sources. They are not aggressive and rarely sting, their defense is primarily escape. When threatened, workers may feign death or retreat into the nest. Their small size makes them fascinating to observe as they navigate their environment. They do best with minimal disturbance during the founding phase ^[1].

Frequently Asked Questions

References