Cataglyphis viatica

Quick Summary

• Difficulty: Hard
• Origin & Habitat: North Africa (Morocco, Algeria, Tunisia, Egypt), Middle East (Oman, Saudi Arabia), and southern Spain. Inhabits desert and semi-arid landscapes including oases, dry riverbeds, and steppe regions with dry, hard soil ^[2][4][6]. Nests are dug in sandy soil with entrances that lack a crater ^[5].
• Colony Type: Monogynous, colonies have a single reproductive queen ^[4][7][8]. Queens mate with multiple males (3 to 9 partners), a trait called polyandry that increases genetic diversity ^[4]. If the queen dies, workers can produce male offspring from unfertilized eggs (arrhenotokous parthenogenesis) and female offspring from fertilized eggs (thelytokous parthenogenesis) ^[4].
• Size & Growth:
  • Queen: Exact total body length is not available. Based on Cataglyphis genus patterns, queens are estimated to be around 10-14 mm (inferred from similar species).
  • Worker: Exact total body length is not available. Workers are polymorphic (head width ~1.92 mm) ^[1], and full body length is estimated to be 6-12 mm based on Cataglyphis genus patterns.
  • Colony: Up to ~565 workers (mean ~386 workers in a study of 6 colonies) ^[1].
  • Growth: Moderate
  • Development: Unknown, no specific development data is available for this species. (Development timing is likely temperature-dependent if inferred from related Cataglyphis species, but this is unconfirmed.)
• Antkeeping:
  • Temperature: Based on desert habitat, keep warm and dry. Provide a temperature gradient from around 26-35°C. Use a heating cable on one side of the nest so ants can choose their preferred temperature. Avoid sudden drops in temperature ^[5].
  • Humidity: Very low. C. viatica nests in dry, hard soil and cannot tolerate wet conditions. Keep the nest substrate completely dry. Provide a separate water source, such as a test tube plugged with cotton, for drinking. Allow the outworld to be dry as well.
  • Diapause: Unknown, no research data available. Given the species' warm climate distribution, diapause may be weak or absent. If the colony slows down in winter, a slight temperature reduction (15-18°C) for 4-6 weeks might be attempted, but this is speculative.
  • Nesting: Ground-nesting species that digs in sandy soil ^[5]. In captivity, use Y-tong (AAC) nests, plaster nests, or a naturalistic setup with a sand-filled chamber. Keep the nesting area dry at all times. Provide a test tube or shallow water source in the outworld for drinking.
• Behavior: Cataglyphis viatica is an aggressive, fast-moving desert ant. Workers are active, solitary foragers that do not use recruitment to food sources, each forager finds food independently ^[9]. They are known for raising their abdomen when threatened, a defensive display that led one observer to compare them to a 'city sergeant always on alert' ^[5]. They spray formic acid as a chemical defense (typical for Formicinae ants). They are excellent climbers, so use barrier tape or fluon on the enclosure edges to prevent escapes. Workers are quick and may try to escape if disturbed ^[10].
• Common Issues: too much humidity is lethal, keep the nest and outworld very dry, small colony size (under 100 workers) makes them vulnerable to stress and insufficient foraging, wild-caught colonies may carry parasites or myrmecophilous beetles ^[15], overfeeding can lead to mold in dry conditions if food is left uneaten, lack of a proper temperature gradient can cause brood failure

Nest Preferences

In the wild, C. viatica nests in sandy soil where moisture is found at a shallow depth. The nest entrance is typically an opening without a crater ^[5]. They prefer dry, hard soil in steppe regions and are often found at the edges of oases ^[6][5]. In captivity, use Y-tong (AAC), plaster, or a naturalistic nest with sand. The key is to keep the nest very dry, these are desert ants that will quickly die if the substrate is damp. Provide a water tube in the outworld so ants can drink without wetting the nest.

Feeding and Diet

C. viatica is an omnivorous scavenger and insectivore. In the wild, they primarily scavenge dead insects rather than actively hunt ^[13]. They also feed on animal carcasses ^[14]. In captivity, offer protein sources such as small crickets, mealworms, or other insects 2-3 times per week. They also accept sugar water or honey. Because they are solitary foragers ^[9], spread food across the outworld so each worker can find it. Remove uneaten food after 24 hours to prevent mold.

Temperature and Care

As a desert species, C. viatica requires warm conditions for optimal activity and brood development. Specific temperature requirements are not documented, but based on their natural habitat (hot, dry areas), aim for daytime temperatures around 28-35°C with a slight drop at night. Use a heating cable or mat on one side of the nest to create a temperature gradient, allowing the ants to thermoregulate. Keep the nest area dry and well-ventilated. ^[5]

Behavior and Temperament

Workers are very quick and aggressive, described as 'alert' and 'comically raising the abdomen' when disturbed ^[5][10]. They spray formic acid as a chemical defense (typical of Formicinae ants) and do not have a sting. Unlike many ants, they do not use trail pheromones to recruit nestmates to food, each forager finds food on its own ^[9]. Because of their speed and climbing ability, use fluon or barrier tape on the enclosure walls to prevent escapes. Handle colonies minimally to avoid stress.

Colony Structure and Reproduction

Colonies are monogynous (single queen) ^[4][7][8]. The queen mates with 3 to 9 males, a behavior called polyandry ^[4]. New queens are produced sexually, they mate near the natal nest, then fly and shed their wings to start new colonies independently ^[11][12]. If the queen dies, workers can produce male offspring via arrhenotokous parthenogenesis and female offspring via thelytokous parthenogenesis, allowing the colony to persist temporarily ^[4][8].

Unique Associations

C. viatica is a host for several myrmecophilous beetles in the genus Thorictus. In Morocco, T. buigasi beetles have been found clinging to the antennae of workers ^[15]. Other Thorictus species (T. foreli, T. seriesetosus) also associate with this ant ^[16][10]. The beetles clamp onto the antenna shaft with their mandibles and are thought to produce substances that ants lick for feeding ^[5]. These associates are rarely seen in captive colonies and do not affect care.

Frequently Asked Questions

Report an Issue

The current care sheet is based fully on literature. See inconsistencies, or something that's incorrect? Please report here, it will be resolved after review from an admin. Contributing to the blogs tab also helps providing information, to make us be able to further improve the caresheets. Thank you for your support!

References