Prenolepis jerdoni

Prenolepis jerdoni

Prenolepis jerdoni is a medium to large ant species native to Southeast Asia, found across Borneo, Indonesia, Malaysia, the Philippines, and Singapore. Workers measure 2.44-4.86mm and have a distinctive slender appearance with remarkably long legs, antennae, and mesosoma. They are medium to dark brown with a shiny, lightly reticulate cuticle and very large compound eyes that barely surpass the sides of their head. The petiole is narrow and elongate, and the propodeum is noticeably taller than the pronotum. These ants are lowland tropical species primarily found near coastlines and on islands, often collected in gardens and even inside Nepenthes pitcher plants ^[1][2][3].

What makes P. jerdoni stand out is their extremely gracile build, their leg index (HTI) exceeds 185 and their scape index (SI) exceeds 185,making them one of the most elongated Prenolepis species. This, combined with their large eyes, suggests they are highly active foragers adapted to navigating complex tropical environments. They are part of the Lasiini tribe within Formicinae, making them relatives of Lasius ants but with distinctly different morphology ^[1][4].

Quick Summary

• Difficulty: Medium
• Origin & Habitat: Southeast Asia, Borneo, Indonesia, Malaysia, Philippines, Singapore. This is a lowland tropical species found primarily near coastlines and on islands ^[1]. In the wild, they have been collected in gardens and inside Nepenthes pitcher plants, suggesting they thrive in humid, vegetated areas with access to moisture ^[5][6].
• Colony Type: Colony structure is unconfirmed. Like other Prenolepis species, they are likely monogyne (single queen) but this has not been directly documented.
• Size & Growth:
  • Queen: Undocumented, estimated 6-8mm based on worker size and genus patterns
  • Worker: 2.44-4.86mm ^[2]
  • Colony: Undocumented, likely several hundred workers based on related species
  • Growth: Moderate, inferred from tropical species patterns
  • Development: Estimated 6-8 weeks at tropical temperatures (25-28°C) based on typical Formicinae development (Development timeline is not directly studied, estimate based on genus patterns for lowland tropical species)
• Antkeeping:
  • Temperature: Keep at 24-28°C. As a lowland tropical species from Southeast Asia, they need warm, stable temperatures. A heating cable on one side of the nest creates a gradient allowing workers to self-regulate ^[1]
  • Humidity: Keep high, these ants come from humid tropical environments. Maintain moist substrate in the nest area, with some drier areas available. Their presence in Nepenthes cups indicates tolerance for very humid conditions ^[5][7]
  • Diapause: Unlikely, as a tropical species from near coastlines and islands, they probably do not require a diapause period. However, a slight reduction in temperature during cooler months may be beneficial.
  • Nesting: In captivity, Y-tong nests or plaster nests with good moisture retention work well. Their natural habitat includes rotting wood and plant cavities (Nepenthes), so provide nest chambers with moderate to high humidity. Avoid overly dry conditions.
• Behavior: These ants are active foragers with their extremely long legs and antennae making them efficient at exploring their territory. They are likely generalist foragers, similar to other Prenolepis species, scavenging for nectar, honeydew, and small insects. Their large eyes suggest they may rely more on visual cues than many other ant species. Escape prevention should be moderate, while not tiny, they are slender and can squeeze through small gaps. They are not known to be particularly aggressive but will defend their colony if threatened.
• Common Issues: high humidity maintenance is critical, dry conditions will stress these tropical ants, temperature drops below 22°C may slow or stop colony activity, wild-caught colonies may contain parasites or pathogens from their native habitat, their slender build means they can escape through gaps that larger ants cannot fit through, slow colony growth can lead to keeper impatience and overfeeding, causing mold problems

Housing and Nest Setup

Prenolepis jerdoni does well in Y-tong (acrylic) nests or plaster nests that can hold moisture. Their natural habitat includes rotting wood and plant cavities, so they prefer enclosed spaces with good humidity. A test tube setup can work for founding colonies, but be prepared to move them to a proper nest once the colony reaches 20-30 workers. The nest should have chambers sized appropriately for their colony size, not too large, as ants do better in snugger spaces. Place the nest in a dark area or cover it with an escape barrier, as these ants prefer dim conditions. An outworld for foraging should include plants or decorations they can explore, reflecting their natural presence in vegetated areas. ^[1]

Feeding and Diet

Like other Prenolepis species, P. jerdoni is likely a generalist feeder. Offer sugar water or honey as a constant energy source. For protein, provide small insects like fruit flies, pinhead crickets, or mealworm pieces. Their extremely long legs and antennae suggest they are active foragers, so they will likely readily take prey. In the wild, they have been found in Nepenthes cups, suggesting they may also feed on nectar or attracted to sweet substances. Feed protein 2-3 times per week, removing any uneaten prey after 24 hours to prevent mold. Sugar water should be available continuously, replaced every few days. ^[5][6]

Temperature and Humidity Management

As a lowland tropical species from Southeast Asia, P. jerdoni needs warm and humid conditions. Maintain temperatures between 24-28°C, this is ideal for tropical ant species and matches their natural habitat near coastlines and islands. A heating cable placed on one side of the nest creates a temperature gradient, allowing workers to move to warmer or cooler areas as needed. Humidity is critical: keep the nest substrate consistently moist but not waterlogged. Their presence in Nepenthes pitcher plants demonstrates they tolerate very humid conditions. Use a moisture meter or observe condensation on the nest walls to gauge humidity levels. Avoid placing the setup near air conditioning or drafty areas that could cause temperature swings. ^[1][4]

Colony Development and Growth

Prenolepis jerdoni is a medium to large ant species with workers reaching 2.44-4.86mm. While specific development times are not documented, tropical Formicinae species typically develop from egg to worker in 6-8 weeks under optimal conditions (25-28°C). The first workers (nanitics) will be smaller than mature workers but should already show the species' characteristic elongated form. Colony growth is likely moderate, not as fast as some tropical pioneers but faster than temperate species. Expect the colony to reach 50-100 workers within the first year under good conditions. Once established, colonies likely grow to several hundred workers, though exact maximum size is unknown for this species. ^[2]

Behavior and Temperament

30. suggest they are visually oriented foragers compared to many other ant species. They are likely diurnal foragers, actively searching for food during daylight hours. While not documented specifically for P. jerdoni, Prenolepis species are generally not aggressive and focus on foraging rather than defending large territories. However, they will readily defend their nest if threatened. Their slender build and active foraging style make them interesting to watch, they move quickly and methodically explore their environment. ^[2]

Frequently Asked Questions

References