Pheidole abakytan

Pheidole abakytan

Pheidole abakytan is a tiny ant species recently described from the Cerrado biome in southern Brazil. Majors (soldier ants) have a reddish-brown coloration with a broad, convex head covered in dense appressed setae, while minors are even smaller at just 0.5-0.6mm head width ^[1]. This species belongs to the diligens group and was discovered in savanna woodlands at 917 meters elevation in Paraná state, the southernmost edge of the Cerrado biome ^[1][2]. The name comes from Tupi-Guarani meaning 'short hair, ' referring to the distinctive hairs on the major worker's head ^[1].

What makes this species interesting is its recent discovery, it was only formally described in 2020, which means there's very little captive keeping data available. However, as a Pheidole species, it likely shares the genus traits of being seed-harvesting omnivores with distinct major and minor worker castes. The Cerrado environment suggests it prefers warm, seasonal conditions with distinct wet and dry periods.

Quick Summary

• Difficulty: Unknown, this is a newly described species with no established captive history
• Origin & Habitat: Paraná state, Brazil, specifically the Parque Estadual do Cerrado in Jaguariaíva at 917m elevation. This represents the southernmost fragment of the Cerrado biome, characterized by savanna open woodlands ^[1][2].
• Colony Type: Unconfirmed, colony structure has not been documented. Most Pheidole species form single-queen colonies, but this specific species has not been studied.
• Size & Growth:
  • Queen: Undescribed in original description, likely 5-8mm based on genus patterns
  • Worker: Majors: 1.08-1.16mm head width, Minors: 0.50-0.60mm head width ^[1]
  • Colony: Unknown, typical Pheidole colonies reach several thousand workers
  • Growth: Unknown, estimate moderate growth based on genus patterns
  • Development: Unknown, estimate 6-10 weeks based on typical Pheidole development at warm temperatures (No specific development data exists for this species. Estimates based on genus-level patterns for similar small Myrmicinae ants.)
• Antkeeping:
  • Temperature: Aim for 22-28°C, this species comes from warm savanna conditions in the Cerrado, which experiences temperatures regularly in the mid-to-high 20s°C during the active season
  • Humidity: Moderate, provide a gradient from slightly moist to drier areas. The Cerrado has distinct wet and dry seasons, so allow the colony to choose their preferred zone.
  • Diapause: Likely, temperate and subtropical Pheidole species typically require a winter rest period. However, this species' exact diapause requirements are unconfirmed.
  • Nesting: No specific nesting data exists. Based on the savanna habitat, they likely nest in soil under stones or in shallow underground chambers. A test tube setup works well for founding colonies, with potential transition to a plaster or acrylic nest as the colony grows.
• Behavior: Behavior is unstudied in captivity. Based on genus patterns, expect typical Pheidole behavior: majors primarily process seeds and defend the colony, while minors handle most foraging and brood care. They are likely not aggressive but will defend the nest vigorously if threatened. Escape risk is moderate due to their small size, use standard barrier methods.
• Common Issues: no captive husbandry data exists, this is a newly described species with no established keeping protocols, colony growth rate is unknown, beginners may struggle without baseline expectations, winter diapause requirements are unconfirmed, improper seasonal care could harm the colony, very limited availability, this species is rarely available in the antkeeping hobby, similar species identification, distinguishing from P. laevifrons, P. lemur, and P. zelata requires expertise

Discovery and Taxonomy

Pheidole abakytan was only recently described in 2020 by Casadei-Ferreira, Economo, and Feitosa, making it one of the newest ant species available to hobbyists ^[1]. The type specimens were collected using pitfall traps in a savanna area at 917 meters elevation in Paraná state, Brazil, specifically at the Parque Estadual do Cerrado, which represents the southernmost fragment of the Cerrado biome ^[1][2]. The species name comes from Tupi-Guarani: 'ába' means hair and 'akytan' means short, referring to the distinctive short hairs on the major worker's head ^[1]. This species belongs to the diligens group, which includes several similar species that can be distinguished by differences in body sculpture and hair characteristics.

Identification and Physical Characteristics

This species has two distinct worker castes. Major workers (soldiers) have a reddish-brown coloration with a broad, convex head measuring 1.08-1.16mm in width, covered in dense appressed setae ^[1]. The vertexal margin is deeply emarginate (notched), and the propodeal projection is triangular rather than spiniform, which helps distinguish it from similar species like P. zelata ^[1]. Minor workers are much smaller at 0.50-0.60mm head width, with a predominantly areolate (wrinkled) head surface ^[1]. Both castes have a combination of stiff standing and appressed setae on the first gastral tergum (abdomen), and the overall body color is reddish-brown ^[1]. The major's first gastral tergum is finely areolate, while the minor's is smooth, a key identification feature ^[1].

Natural Habitat and Environmental Preferences

Pheidole abakytan comes from the Cerrado biome, which is Brazil's tropical savanna, one of the world's most biodiverse savanna regions. The type locality at 917m elevation experiences warm temperatures and distinct seasonal patterns with wet and dry periods ^[2]. The prevailing vegetation consists of open woodlands with scattered trees and a grassy understory ^[2]. This environment suggests the species is adapted to relatively warm conditions with moderate humidity that fluctuates seasonally. In captivity, replicating these conditions means providing warmth (roughly low-to-mid 20s°C) with substrate moisture that allows for both moist and drier zones within the enclosure.

Feeding and Diet

The specific diet of Pheidole abakytan has not been documented, but like other Pheidole species, they are likely omnivorous seed-harvesters that also consume small insects and tend aphids for honeydew. Pheidole ants are generalized foragers that collect seeds, dead insects, and sugary secretions. In captivity, you should offer a varied diet: protein sources like small crickets, mealworms, or fruit flies 2-3 times weekly, along with sugar sources like honey water or sugar water. Seeds (grass seeds, millet, etc.) should be available as they're typical Pheidole food. Start with small prey items appropriate to their tiny size, flightless fruit flies and small mealworm pieces work well for the minors.

Housing and Nesting

No specific nesting data exists for this species, but based on the savanna habitat and genus patterns, they likely nest in soil under stones or in shallow underground chambers. For captive care, standard setups work well: test tubes for founding colonies, transitioning to a small formicarium or acrylic nest as the colony grows. Because minors are only 0.5-0.6mm, ensure that any setup has appropriately sized chambers and passages. Provide a moisture gradient, some areas moist, some drier, allowing the colony to self-regulate. A layer of substrate for tunneling is essential, as these are ground-nesting ants.

Seasonal Care and Growth Expectations

The exact seasonal requirements of P. abakytan are unknown, but being from the Cerrado (a seasonal tropical environment), they likely experience reduced activity during cooler or drier periods. Most temperate-region Pheidole species benefit from a winter rest period at cooler temperatures (15-18°C) for several months. Since this species comes from southern Brazil (Paraná), which experiences cooler winters than tropical Brazil, a mild diapause is likely appropriate. Growth expectations are unclear since no captive colonies have been documented, expect slower growth initially as the colony establishes, with acceleration once the first major workers appear. Based on similar small Myrmicinae, expect 6-10 weeks from egg to first worker at optimal temperatures.

Frequently Asked Questions

References