Pheidole guineensis
- Sci. Name
- Pheidole guineensis
- Tribe
- Attini
- Subfamily
- Myrmicinae
- Author
- Fabricius, 1793
- Distribution
- Found in 2 countries
Introduction
Pheidole guineensis is a small ant species originally described from Guinea, West Africa, now known to also occur in the Indomalayan region (Borneo, Indonesia, Malaysia) . Like all Pheidole species, they have two worker castes: smaller minor workers and larger major workers with distinctive enlarged heads used for seed-processing and colony defense . The species has taxonomic history dating back to 1793 when Fabricius first described it as Formica guineensis, later moved to Tetramorium before Bolton correctly placed it in Pheidole in 1977 .
Quick Summary
- Difficulty: Medium
- Origin & Habitat: West Africa (Guinea) and Southeast Asia (Borneo, Indonesia, Malaysia) in tropical and subtropical regions [3]
- Colony Type: Unconfirmed, no specific data on queen number, but based on typical Pheidole patterns, likely monogyne (single queen)
- Size & Growth:
- Queen: ~7-9 mm, inferred from Pheidole genus [3]
- Worker: Minor workers ~2-3 mm, major workers ~4-6 mm, inferred from Pheidole genus [3]
- Colony: Up to several thousand workers, estimated from typical Pheidole colonies [3]
- Growth: Moderate to fast, inferred from Pheidole genus [3]
- Development: Estimated 5-8 weeks at tropical temperatures, inferred from Pheidole genus [3] (Development time is inferred from related Pheidole species, specific data for P. guineensis is not available)
- Antkeeping:
- Temperature: Keep at 24-28°C with a slight gradient for self-regulation, based on tropical habitat [3]
- Humidity: Keep nest substrate consistently moist but not waterlogged, based on tropical conditions [3]
- Diapause: No, tropical species do not require hibernation [3]
- Nesting: Prefer soil or under stones in wild, in captivity, use Y-tong, plaster, or naturalistic nests with moist substrate [3]
- Behavior: Active foragers with minor workers handling tasks and majors defending the colony, moderately aggressive when threatened, escape risk due to small size [3]
- Common Issues: colonies may fail if kept too cold, maintain warm temperatures, escape prevention is important due to small worker size, overfeeding can lead to mold in nest setups, wild-caught colonies may carry parasites affecting survival, slow initial growth during founding may lead to keeper impatience
Nest Preferences
In the wild, Pheidole guineensis likely nests in soil or under stones in tropical habitats. They prefer humid, shaded locations that maintain consistent moisture. For captive colonies, provide a nest that can maintain high humidity, Y-tong (AAC) nests, plaster nests, or naturalistic setups with moist soil all work well. The nest should have dark chambers since these ants prefer dim conditions. Avoid dry nests as low humidity can cause colony decline. A water reservoir or moisture gradient in the nest helps maintain proper humidity levels [3].
Feeding and Diet
Pheidole species are omnivorous and accept a varied diet. Feed protein sources such as small insects (fruit flies, pinhead crickets, mealworms), and provide sugar sources like honey water or sugar water. Major workers are adapted to process harder foods like seeds, so offering small seeds can provide enrichment. Feed every 2-3 days, removing uneaten prey to prevent mold. Fresh water should always be available. The dimorphic caste system means majors will take harder food items that minors cannot process, so offering variety is beneficial [3].
Temperature and Care
As a tropical species from West Africa and Southeast Asia, Pheidole guineensis requires warm conditions. Keep the nest area at 24-28°C for optimal brood development and colony growth. A heating cable on one side of the nest creates a temperature gradient, allowing ants to self-regulate. Avoid temperatures below 20°C for extended periods. High humidity is important, mist the outworld occasionally and ensure the nest substrate stays moist. Since they are tropical, they do not require hibernation [3].
Behavior and Temperament
Pheidole guineensis displays typical Pheidole behavior with distinct worker castes. Minor workers handle foraging, nursing brood, and general colony tasks, while major workers serve as soldiers defending the colony and processing hard food items like seeds. They are active foragers that establish foraging trails. When threatened, majors readily respond to defend the nest. They are not typically aggressive toward humans but will defend vigorously if their nest is disturbed. Their small size means they can escape through tiny gaps, use fine mesh and tight-fitting lids on all enclosures [3].
Frequently Asked Questions
How long does it take for Pheidole guineensis to produce first workers?
Based on typical Pheidole development, expect first workers in approximately 5-8 weeks after the queen lays eggs, when kept at tropical temperatures (25-28°C). The exact timeline for this species is not documented, so monitor your colony and maintain warm, humid conditions for optimal development [3].
Can I keep Pheidole guineensis in a test tube?
Yes, test tubes work well for founding colonies. Use a standard test tube setup with a water reservoir sealed with cotton. Keep the founding chamber warm (around 26°C) and dark. Once the colony reaches 20-30 workers, consider moving to a larger nest like a Y-tong or plaster formicarium that can maintain higher humidity [3].
What do Pheidole guineensis eat?
They are omnivorous. Offer small protein sources like fruit flies, small crickets, or mealworms 2-3 times per week. Provide a constant sugar source like honey water or sugar water. They will also accept seeds, which majors can process with their large heads. Remove uneaten food promptly to prevent mold [3].
Are Pheidole guineensis good for beginners?
They are rated as medium difficulty. They require warm, humid tropical conditions that may need active management. The main challenges are maintaining proper temperature and humidity, plus escape prevention due to their small size. If you can provide stable warm, humid conditions, they are a rewarding species to keep [3].
How big do Pheidole guineensis colonies get?
Based on typical Pheidole colony sizes, established colonies can reach up to several thousand workers. Major workers (soldiers) will appear as the colony grows, typically once the colony reaches several hundred workers [3].
Do Pheidole guineensis need hibernation?
No, being a tropical species from West Africa and Southeast Asia, they do not require hibernation. Maintain warm temperatures year-round (24-28°C). They may show slight reduced activity during cooler periods, but this is not a true diapause [3].
When should I move Pheidole guineensis to a formicarium?
Move from a test tube to a proper nest once the colony reaches 20-30 workers and the test tube shows signs of drying or space constraints. A Y-tong (AAC) nest or plaster formicarium with moisture capability works well for this species [3].
Why are my Pheidole guineensis dying?
Common causes include: temperatures below 20°C (tropical species need warmth), low humidity causing desiccation, mold from overfeeding, or stress from too much disturbance. Check that your setup maintains 24-28°C and moist substrate. Wild-caught colonies may also carry parasites that affect captive survival [3].
Can I keep multiple Pheidole guineensis queens together?
Pheidole species are typically single-queen (monogyne) colonies. Combining unrelated queens is not recommended as they will likely fight. Only keep one queen per colony unless you observe peaceful multi-queen behavior, which is uncommon for this genus [3].
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References
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