Crematogaster patei

Crematogaster patei

Crematogaster patei is a small ant species native to eastern and central Mexico, specifically found in the Tamaulipas region around Tampico. Workers measure approximately 3.5mm and are easily recognized by their distinctive erect and abundant pubescence (tiny hairs) covering the body, giving them a fuzzy appearance. The species has slender, sharp epinotal spines (spines on the rear of the thorax) that shine, and the gaster is typically darker than the head and thorax. This species was described by Buren in 1968 and remains rarely collected, with limited biological information available. As an acrobat ant, they can raise their gaster forward over their head when disturbed, though this species is not aggressive ^[1][2].

Quick Summary

• Difficulty: Medium
• Origin & Habitat: Eastern and central Mexico, specifically Tamaulipas state around Tampico. They inhabit desert scrub with stony clay soil, indicating they prefer warm, drier conditions with well-draining substrates ^[1].
• Colony Type: Unconfirmed colony structure. Based on typical Crematogaster patterns, likely single-queen (monogyne) colonies, but this has not been documented for this specific species.
• Size & Growth:
  • Queen: Unknown, not described in available literature
  • Worker: Approximately 3.5mm ^[3]
  • Colony: Unknown, this is a rarely collected species with no documented colony sizes
  • Growth: Unknown, no development data available for this species
  • Development: Estimated 6-8 weeks based on typical Crematogaster genus patterns at optimal temperature (Development timeline is not directly studied for this species. Estimates based on related Crematogaster species which typically complete development in 6-8 weeks at warm temperatures.)
• Antkeeping:
  • Temperature: Keep at 24-28°C. Based on their desert scrub habitat, they tolerate warmer conditions. A heating cable on one side of the nest creates a gradient allowing workers to self-regulate ^[1].
  • Humidity: Moderate humidity around 50-60%. Their natural habitat in stony clay soil suggests they prefer drier conditions compared to forest-dwelling ants. Allow the nest substrate to dry partially between waterings.
  • Diapause: Unknown for this species. Mexican species from temperate regions may benefit from a mild winter reduction in temperature (15-18°C) for 2-3 months, but this is not confirmed.
  • Nesting: Y-tong (AAC) nests work well for this size. The stony clay soil habitat suggests they prefer compact chambers with some moisture but good drainage. Plaster or acrylic nests with moderate humidity chambers are suitable.
• Behavior: Generally calm temperament with no significant aggression toward keepers. As acrobat ants, they may raise their gaster when disturbed but rarely bite or sting. Workers are active foragers, likely collecting nectar and small insects in nature. Escape risk is moderate, at 3.5mm they are not tiny but can still squeeze through small gaps. Use standard barrier methods.
• Common Issues: limited biological data means care is based on genus-level inference rather than species-specific research, humidity control is important, too wet conditions may cause issues given their desert origins, escape prevention should still be practiced despite moderate size, growth rate is unknown so keepers may need patience during founding phase, this rarely collected species may have specific needs not documented in available literature

Natural History and Identification

Crematogaster patei is one of the rarer acrobat ant species, known only from the Tamaulipas region of Mexico. The species was first described by William F. Buren in 1968 based on workers collected from Tampico. The most distinctive identification feature is the erect and abundant pubescence covering their entire body, including the scapes and legs. This character makes them visually similar to Crematogaster pilosa, but the two species belong to different species groups and are not closely related. The slender, sharp, and shining epinotal spines are another key diagnostic feature, along with the relatively dark head and gaster contrasting with a lighter thorax. The species has been recorded in eastern and central Mexico, with confirmed sightings in Tamaulipas state ^[1][2][3].

Housing and Nest Preferences

For this species, a Y-tong (AAC) nest or acrylic formicarium works well given their moderate size of 3.5mm workers. The stony clay soil habitat in their natural range suggests they prefer compact nesting chambers with some moisture but good drainage. Avoid overly wet conditions, these ants come from semi-arid desert scrub and prefer drier nest conditions than many other ant species. A small water chamber connected to the nest allows workers to access moisture as needed. Since they are moderate-sized ants, standard escape prevention measures are sufficient, though you should still use fluon or other barriers as a precaution. The nest should have multiple chambers to allow the colony to organize brood and food storage separately. ^[3]

Feeding and Diet

Like other Crematogaster species, these ants are omnivorous and will accept both sugar sources and protein. Offer sugar water, honey, or diluted maple syrup as a constant carbohydrate source. For protein, provide small insects such as fruit flies, small crickets, or mealworms. Crematogaster patei likely forages for nectar and small arthropods in nature, so their diet in captivity should mirror this. Feed protein 2-3 times per week, removing any uneaten prey after 24 hours. The desert scrub habitat suggests they may be more tolerant of drier conditions and may not require as much moisture as rainforest species, but always ensure clean water is available. ^[3]

Temperature and Seasonal Care

Keep the nest area at 24-28°C, reflecting their origin in the warm Mexican desert scrub. A heating cable placed on one side of the nest creates a temperature gradient, allowing workers to move between warmer and cooler areas as needed. This mimics the natural variation they would experience in their stony habitat. During winter, a mild temperature reduction to 15-18°C for 2-3 months may benefit the colony, though this is not definitively required for this species. Monitor colony activity, if workers remain active and brood continues developing, they may not need a diapause period. The key is stability rather than exact temperatures, avoiding sudden fluctuations that could stress the colony. ^[1]

Behavior and Temperament

Crematogaster patei exhibits typical acrobat ant behavior, when disturbed, workers may raise their gaster forward over their head in a defensive posture. However, this species is not particularly aggressive and rarely bites or stings keepers. They are active foragers and will readily explore their outworld in search of food. Workers communicate through chemical trails and may use tandem running to recruit nestmates to food sources. The colony will establish a clear division of labor with workers tending brood, foraging for food, and maintaining the nest. Their moderate size and calm temperament make them manageable for keepers willing to work with a species that has limited documented care information. ^[3]

Frequently Asked Questions

References