Acanthostichus lattkei

Acanthostichus lattkei

These tiny ants are known only from workers collected in the mountains of western Venezuela. Workers measure just under a millimeter in length, with distinctive elongated antennae and a petiole that is longer than it is wide ^[1]. They were discovered in soil beneath leaf litter in tropical forest at 500 meters elevation ^[2]. Only the worker caste has ever been found, meaning no one has ever seen a queen or male of this species ^[1].

Because scientists have only collected workers, almost nothing is known about how these ants live in the wild or how they raise their young. They belong to the subfamily Dorylinae, which includes army ants and other specialized predators, but their specific biology remains a mystery ^[1].

Quick Summary

• Difficulty: Expert
• Origin & Habitat: Venezuela (Táchira state), collected in soil below leaf litter in tropical forest at 500m elevation ^[2][1].
• Colony Type: Unknown, only the worker caste has been described ^[1].
• Size & Growth:
  • Queen: Unknown, no queens described ^[1].
  • Worker: 0.93-1.40 mm (head dimensions indicate very small workers under 2mm) ^[1].
  • Colony: Unknown.
  • Growth: Unknown.
  • Development: Unknown, estimated 6-10 weeks at 25°C based on typical small tropical ants, but unconfirmed for this species. (No developmental data exists. This estimate is speculative.)
• Antkeeping:
  • Temperature: Likely 24-28°C based on tropical origin, but unconfirmed. Start at 25°C and observe activity levels.
  • Humidity: High humidity required, keep substrate consistently damp like tropical forest floor soil ^[1].
  • Diapause: No, tropical species unlikely to require hibernation.
  • Nesting: Naturalistic setup with soil and leaf litter layers, small chambers required due to tiny size ^[1].
• Behavior: Activity patterns unknown. Workers are extremely small (under 2mm), so escape prevention must be exceptional, use fine mesh and barriers ^[1].
• Common Issues: unknown dietary requirements may lead to colony failure if not properly researched., extreme small size means escapes are likely without specialized containment., no queens have ever been collected, making founding impossible with current knowledge., lack of captive care documentation means you are essentially pioneering their care.

Identification and Appearance

Acanthostichus lattkei workers are tiny, with head lengths of 0.96-1.40 mm and head widths of 0.93-1.34 mm ^[1]. You can identify them by their elongated antennal scapes and a petiole that is longer than it is wide. The petiole has a rough texture with longitudinal troughs and fine lines running along the top surface, and there is a large tooth pointing backward on the underside ^[1]. The clypeus has a well-defined middle tooth and developed side angles. These features separate them from similar species like Acanthostichus bentoni ^[1].

Natural History and Habitat

This species comes from the tropical forests of Táchira, Venezuela, specifically near Presa Las Cuevas at 500 meters elevation ^[2]. Workers were found living in soil beneath leaf litter on the forest floor ^[2]. This suggests they are subterranean ants that forage or nest in the interface between soil and decaying plant matter. The habitat is tropical montane forest, indicating warm temperatures and high humidity year-round.

Captive Care Considerations

You should not attempt to keep this species unless you are an experienced researcher. No one has successfully kept Acanthostichus lattkei in captivity because queens have never been collected, and the species is known only from a handful of worker specimens ^[1]. If you somehow obtained workers, you would face immediate problems: you cannot start a colony without a queen, and the workers would eventually die without replacing themselves. Additionally, their extremely small size means they can escape through gaps that would stop larger ants. If you were to attempt housing, you would need a naturalistic setup with actual soil and leaf litter layers, kept damp and warm, but success is purely theoretical.

Feeding and Diet

The diet of Acanthostichus lattkei is unknown. Other members of the genus Acanthostichus are specialized predators of termites, but whether this specific species shares that diet has not been confirmed. If you were attempting to feed workers temporarily, you might try tiny live prey like springtails or termite workers, but acceptance is uncertain. Do not assume standard ant diets of sugar water and mealworms will work.

Frequently Asked Questions

References