Cataglyphis theryi

Cataglyphis theryi

Cataglyphis theryi is a small to medium-sized desert ant belonging to the albicans group, native to Morocco and adjacent regions of the Palaearctic. Workers measure around 1.4mm in head width with a distinct pale to yellowish coloration typical of desert-dwelling Cataglyphis species. Queens are significantly larger with a 2.17mm head width, showing pronounced queen-worker dimorphism. This species forms colonies of 100-500 workers, with monogynous (single queen) colony structure confirmed through genetic studies. Unlike some related Cataglyphis species, C. theryi reproduces sexually without thelytokous parthenogenesis, and queens mate with multiple males (2-4 per queen). These ants are adapted to hot, arid environments and are typically found in desert and semi-desert habitats across their range in Morocco and Spain.

Quick Summary

• Difficulty: Medium
• Origin & Habitat: Morocco and Spain (Palaearctic Region). Found in desert and semi-desert habitats, typically nesting under stones or in open ground. Type locality is between Meknès and Azou in Morocco ^[1][2].
• Colony Type: Monogyne, single queen colonies with one reproductive queen. Queens are multiply mated (2-4 males per queen) but colonies contain only one functional queen ^[3][2].
  • Colony: Monogyne
  • Founding: Claustral
• Size & Growth:
  • Queen: Queens approximately 6-8mm (estimated from 2.17mm head width measurement) ^[4]
  • Worker: Workers approximately 4-6mm with 1.41mm head width ^[4]
  • Colony: 100-500 workers, typical colony size around 300 workers ^[4]
  • Growth: Moderate, based on related desert Cataglyphis species
  • Development: 8-12 weeks estimated based on genus patterns for desert species at optimal temperature (Development time inferred from related Cataglyphis species. Warmer temperatures within acceptable range may accelerate development.)
• Antkeeping:
  • Temperature: Keep at 24-30°C with a warm gradient. As desert ants, they tolerate and prefer higher temperatures. Provide a heating cable on one side of the nest to create a temperature gradient ^[5].
  • Humidity: Low to moderate, desert species prefer drier conditions. Keep nest substrate relatively dry with occasional moisture zones. Avoid excessive humidity which can be harmful.
  • Diapause: Likely required, Cataglyphis species from temperate regions typically need a winter rest period. Provide 2-3 months at 10-15°C during winter ^[5].
  • Nesting: Y-tong (AAC) nests or plaster nests work well. Provide dry to moderately humid conditions. They prefer tight chambers and narrow passages. Natural setups with sand substrate and flat stones for cover are also suitable.
• Behavior: Active foragers adapted to hot conditions. Workers are fast runners and efficient scavengers, typical of desert Cataglyphis. They are not particularly aggressive but will defend the nest. Escape risk is moderate, use standard barriers. They are diurnal and heat-tolerant, often foraging during the hottest parts of the day.
• Common Issues: colonies may fail if kept too cold, they need warm conditions, excessive humidity can be harmful, keep nesting area relatively dry, slow colony growth compared to tropical species may frustrate beginners, test tube setups may dry out too quickly, monitor moisture levels, winter diapause is likely required for long-term colony health

Nest Preferences

Cataglyphis theryi is a desert species adapted to dry, warm conditions. In captivity, Y-tong (AAC) nests or plaster nests work well, these materials hold humidity while allowing good ventilation. Provide tight chambers scaled to their size (workers around 4-6mm). The nesting area should be relatively dry compared to tropical species. A naturalistic setup with a sand/soil mixture and flat stones on top also works, mimicking their natural habitat of nesting under stones in desert environments. Ensure the nest has a moisture reservoir that can be monitored, these ants prefer drier conditions but still need some water access. A temperature gradient within the nest is ideal, with one area warmer than the other. ^[2][1]

Feeding and Diet

Cataglyphis theryi is an omnivorous scavenger, typical of desert ants in this genus. They primarily feed on protein sources (dead insects, small arthropods) and sugar sources (honeydew, nectar). In captivity, offer a varied diet including small insects like fruit flies, pinhead crickets, or mealworms. Sugar water or honey should be provided regularly, these ants have high energy needs due to their active foraging lifestyle. Feed protein 2-3 times per week and keep sugar water available at all times. Remove uneaten prey after 24-48 hours to prevent mold. Fresh water should always be available. ^[5]

Temperature and Care

As a desert species from Morocco and Spain, C. theryi requires warm conditions. Keep the nest area at 24-30°C, with a gradient allowing workers to choose their preferred temperature. A heating cable placed on one side of the nest creates an ideal gradient. These ants are heat-tolerant and will be most active at the warmer end of their range. Avoid temperatures below 20°C for extended periods. During winter, provide a diapause period of 2-3 months at 10-15°C to simulate natural seasonal cycles. This winter rest is important for long-term colony health and reproduction. Monitor temperature carefully, cold stress is a common cause of colony failure in this species. ^[5][3]

Behavior and Temperament

This species shows typical Cataglyphis behavior, they are active, fast-moving foragers adapted to hot desert conditions. Workers are efficient scavengers and will quickly locate and retrieve food. They are not overly aggressive but will defend the nest if threatened. The colony structure is monogynous with a single queen, and queens are multiply mated (2-4 males per queen). Workers are moderately polymorphic, showing some size variation within the colony. They are diurnal and will be most active during daylight hours, especially in warmer parts of the day. Provide an outworld area large enough for foraging. Escape risk is moderate, standard barriers like fluon on test tube rims work well. ^[3][2][4]

Colony Growth and Development

Colonies grow to 100-500 workers, with typical mature colonies around 300 workers ^[4]. The queen-worker dimorphism is pronounced (QWD: 42.68), with queens significantly larger than workers ^[4]. Development from egg to worker takes approximately 8-12 weeks based on related Cataglyphis species patterns. First workers (nanitics) will be smaller but the colony will grow quickly once established. The colony growth rate is moderate, faster than some slow-growing species but not as rapid as tropical ants. Multiple mating by the queen (2-4 males) increases genetic diversity within colonies, which may contribute to colony fitness. Regular feeding and warm temperatures will support healthy colony development.

Frequently Asked Questions

References