Tetramorium doriae

Quick Summary

• Difficulty: Medium
• Origin & Habitat: Native to Northeast Africa and the Arabian Peninsula, including Eritrea, Ethiopia, Saudi Arabia, UAE, Oman, and Yemen. Found in warm, arid to semi-arid environments ^[3][4][1].
• Colony Type: Unconfirmed colony structure, likely single-queen (monogyne) based on typical Tetramorium patterns, but no direct observations exist for this species.
• Size & Growth:
  • Queen: Unknown, not described in original species description or subsequent literature
  • Worker: 3.2-3.8mm ^[1]
  • Colony: Unknown, no colony size data exists for this species
  • Growth: Unknown, estimated moderate based on related Tetramorium species
  • Development: Unknown, estimated 6-8 weeks at optimal temperature based on genus-level patterns for small Myrmicinae in warm climates (No direct development data exists. Estimates based on typical Tetramorium growth patterns rather than species-specific research.)
• Antkeeping:
  • Temperature: Estimated 22-28°C based on native range in warm African/Arabian regions. Provide a temperature gradient allowing workers to self-regulate. Related species from similar climates suggest they tolerate higher temperatures well.
  • Humidity: Low to moderate, native to arid/semi-arid regions. Keep nest substrate moderately dry with a small moist area available. Avoid overly damp conditions.
  • Diapause: Unknown, likely reduced activity during cooler months but not a true hibernation given the tropical/subtropical range. Monitor for seasonal slowdowns.
  • Nesting: Natural nesting habits unconfirmed. Likely nests in soil under stones or in shallow ground cavities in warm, dry areas. In captivity, standard test tubes or small plaster or Ytong nests work well. Provide a dry to moderately moist substrate.
• Behavior: T. doriae belongs to the Myrmicinae subfamily, tribe Crematogastrini, which uses a smear defense mechanism: a modified flattened stinger to wipe venom onto enemies rather than piercing. The unarmed propodeum confirms limited active defense. Specific behavior is unstudied, but Tetramorium species are typically generalist foragers actively searching for protein and sugar sources. Workers are small (3.2-3.8mm), so escape prevention is standard, use Fluon or oil barriers. Expect moderate foraging activity and typical Myrmicinae behavior.
• Common Issues: completely unstudied biology means care is based on genus inference rather than species-specific research, no documented colony size limits, keepers have no reference for expected growth, unknown founding behavior, may require different approach than typical claustral species if semi-claustrally reproducing, no data on nuptial flight timing or seasonal reproduction patterns, lack of documented diet acceptance means keepers must experiment with food types

Appearance and Identification

Workers of Tetramorium doriae measure 3.2-3.8mm in total length ^[1]. They have a yellowish brown to mid-brown coloration. The frontal carinae (ridges near the antennae) are very weakly developed, no stronger than the surrounding head sculpture. The eyes are relatively large. The propodeum lacks spines, being essentially unarmed with at most minute denticles at the junction of dorsal and declivous surfaces ^[2]. The petiole node is long compared to its height. The pronotum shows a partial or complete network of ridges (rugoreticulum), which separates this species from the similar Tetramorium gracile where the promesonotum is predominantly unsculptured ^[1]. Mandibles are longitudinally striate, and the anterior clypeal margin is entire without a median notch ^[1].

Distribution and Native Habitat

Tetramorium doriae is found across the Horn of Africa and Arabian Peninsula. Confirmed locations include Eritrea (type locality Assab), Ethiopia, Saudi Arabia, Yemen, United Arab Emirates, and Oman ^{[5][6][3][4][1]}. The original description came from 'Arabia' with the type series collected in Assab, Eritrea, in January 1880 by G. Doria ^[5][6]. Specimens have been recorded from Abu Dhabi in the UAE, representing a new record for that country ^[3]. This distribution pattern suggests the species thrives in warm, arid to semi-arid environments typical of the Saharo-Arabian region.

Nest Preferences and Housing

Natural nesting behavior is completely unstudied for this species ^[1]. Based on typical habits of Tetramorium ants in arid regions, they likely nest in soil under stones or in shallow ground cavities where temperatures are stable. The unarmed propodeum is consistent with species that nest in protected microhabitats. For captive care, standard test tube setups work well for founding colonies. Given the small worker size (3.2-3.8mm), the water reservoir should be appropriately scaled. Provide a nest area that stays relatively dry with only a small moisture zone, avoid damp conditions. A small outworld area allows for foraging. Observe your colony's behavior and adjust humidity based on their activity levels.

Feeding and Diet

Diet preferences are unconfirmed for Tetramorium doriae ^[1]. As a Tetramorium species in the Myrmicinae subfamily, they are likely generalist foragers that accept both protein sources (dead insects, small arthropods) and carbohydrate sources (honey, sugar water). Related Tetramorium species are omnivorous, scavenging and hunting small invertebrates. Start with standard ant foods: small protein items like fruit flies, pinhead crickets, or mealworm pieces, along with a constant sugar source. Since nothing is documented about their preferences, be prepared to experiment. The small worker size (3.2-3.8mm) means prey items should be appropriately sized, not larger than the ants themselves. Remove uneaten food promptly to prevent mold in a relatively dry nest environment.

Temperature and Seasonal Care

Given the native range across Northeast Africa and the Arabian Peninsula, Tetramorium doriae clearly thrives in warm conditions. Estimate an optimal range of 22-28°C based on the hot climates of Eritrea, Saudi Arabia, and UAE where specimens have been collected ^[3][4]. Provide a temperature gradient so workers can self-regulate, a heating cable on one side of the nest creating a warm zone works well. The species has been recorded in the UAE and Saudi Arabia, regions where summer temperatures regularly exceed 40°C, suggesting high heat tolerance. Regarding diapause: the native range does not experience true winters, so expect year-round activity with perhaps reduced foraging during cooler months. Monitor your colony, if they become less active in winter, lower temperatures slightly but do not induce a full hibernation. No research exists on their exact seasonal requirements.

Behavior and Temperament

Specific behavioral observations do not exist in the scientific literature for this species ^[1]. However, Tetramorium ants generally display typical Myrmicinae behavior: active foraging, moderate aggression when defending the nest, and generalist feeding habits. The small worker size (3.2-3.8mm) suggests they are not major defenders, the unarmed propodeum further indicates limited direct defensive capabilities. Tetramorium doriae belongs to tribe Crematogastrini, which uses a smear defense mechanism: a modified flattened stinger to wipe venom onto enemies rather than piercing. This makes them less dangerous than stinging ants. Workers likely forage individually or in small groups rather than forming large raiding columns. Escape risk is moderate, use standard barriers like Fluon or oil. The lack of documented aggressive behavior suggests they are not a danger to keepers, though all ants can bite if provoked. As with any unstudied species, observe your colony closely and document any behaviors that could help future keepers.

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