Pheidole excellens

Pheidole excellens

Pheidole excellens is a small to medium-sized ant species native to West Africa, found in Ghana, Guinea, Ivory Coast, and Togo. Workers measure approximately 2-4mm, with major workers (soldiers) being noticeably larger at around 4-5mm. The species belongs to the Pheidole excellens group within the genus and displays the typical Pheidole morphology with a distinct two-segmented waist (petiole and postpetiole) and a postpetiole that is broader than the petiole. Coloration ranges from yellowish-brown to reddish-brown, with major workers showing darker coloration on the head and mesosoma.

This species is classified as an "opportunist" functional group in ecological studies, meaning it thrives in disturbed habitats and can exploit a wide variety of food resources. Research from Côte d'Ivoire shows P. excellens is common in urban green spaces and savanna areas, though it disappears rapidly after fire events. This suggests the species prefers stable, vegetated environments rather than open, recently burned areas.

Quick Summary

• Difficulty: Medium
• Origin & Habitat: West Africa, Ghana, Guinea, Ivory Coast, and Togo. Found in savanna zones, forest margins, and urban green spaces. The species has been documented in the Lamto Scientific Reserve in Côte d'Ivoire and the Botanical Garden of the University of Lomé in Togo ^[1][2].
• Colony Type: Likely monogyne (single queen colonies) based on typical Pheidole genus patterns. Colony size is estimated at several hundred workers based on related species in the genus.
  • Colony: Monogyne
  • Founding: Claustral
• Size & Growth:
  • Queen: Estimated 6-8mm based on genus patterns
  • Worker: Minor workers: 2-3mm, Major workers: 4-5mm ^[3]
  • Colony: Estimated several hundred workers based on related Pheidole species
  • Growth: Moderate, based on typical Pheidole development patterns
  • Development: Estimated 6-8 weeks at optimal tropical temperatures based on genus patterns (Development time is temperature-dependent, warmer conditions (24-28°C) accelerate development)
• Antkeeping:
  • Temperature: Keep at 24-28°C. As a West African tropical species, they require warm conditions year-round. A heating cable on one side of the nest can create a gentle gradient ^[4].
  • Humidity: Moderate humidity around 50-70%. Keep the nest substrate slightly moist but allow some drying between waterings. These ants are found in both savanna and forest-edge habitats, so they tolerate a range of moisture conditions.
  • Diapause: No, as a tropical species from West Africa, they do not require hibernation. Keep temperatures stable year-round.
  • Nesting: In captivity, they do well in Y-tong (AAC), plaster, or acrylic nests. Provide chambers scaled to their size with some narrow passages. They accept test tube setups but may need moving to a formicarium as the colony grows. In the wild, they nest in soil and rotting wood in forest margins and savanna areas.
• Behavior: Pheidole excellens is an opportunistic forager, meaning it collects a variety of food sources including seeds and small insects. Like other Pheidole species, they have major workers (soldiers) that help process larger food items and defend the colony. They are not particularly aggressive toward keepers but will defend their nest vigorously. Escape prevention is important, use standard barriers as they are not extreme escape artists like some tiny species, but major workers can squeeze through small gaps.
• Common Issues: tropical species requires consistent warmth, cold temperatures below 20°C can slow or stop brood development, wild-caught colonies may harbor parasites, quarantine and observe new colonies carefully, seed-eating species need appropriate granivorous diet, offer grass seeds alongside protein, sensitive to habitat disturbance, avoid placing nest in high-traffic areas with temperature fluctuations, colonies can be slow to establish, patience is needed during the founding phase

Housing and Nest Setup

Pheidole excellens adapts well to various captive setups. For founding colonies, a simple test tube setup works well, fill a test tube with water, plug with cotton, and place the queen in a dark area. Once the colony reaches 20-30 workers, consider moving to a more spacious formicarium. Y-tong (AAC) nests are excellent for this species as they provide appropriately scaled chambers and allow you to observe colony activity. Plaster nests also work well, providing stable humidity. For the outworld, use a simple container with a substrate layer where workers can forage. Ensure escape prevention is in place, while not extreme escape artists, they will exploit any gaps. Fluon applied to the rim of the outworld container works well. ^[3]

Feeding and Diet

As an opportunist species, Pheidole excellens accepts a varied diet. In the wild, related African Pheidole species are primarily granivorous, harvesting seeds from grasses and other plants ^[4]. In captivity, offer a mix of seeds (grass seeds, millet, chia) as a staple food source, along with protein sources like small insects (fruit flies, pinhead crickets, mealworms). They will also accept sugar water or honey as an energy source. Feed seeds continuously, they store them in the nest. Offer protein 2-3 times per week, removing any uneaten prey after 24 hours. Fresh water should always be available.

Temperature and Seasonal Care

This West African species requires warm conditions year-round. Maintain temperatures between 24-28°C in the nest area. A heating cable placed on one side of the nest creates a temperature gradient that allows ants to regulate their own temperature by moving between warmer and cooler areas. Avoid temperatures below 20°C for extended periods as this can slow brood development and weaken the colony. Unlike temperate species, they do not require a diapause or hibernation period. Keep the colony away from air conditioning vents, drafty windows, and other sources of temperature fluctuation. Consistent warmth is key to healthy colony development.

Colony Development and Growth

Pheidole excellens follows typical Pheidole colony development. The claustral queen seals herself in a chamber and raises the first brood using stored fat reserves. First workers (nanitics) are typically smaller than mature workers and appear after 6-8 weeks at optimal temperature. Once nanitics emerge, the queen resumes egg-laying and colony growth accelerates. Major workers (soldiers) appear as the colony grows, these larger workers help process food and defend the colony. Expect the colony to reach several hundred workers over 1-2 years under good conditions. Growth rate is moderate and heavily dependent on temperature and feeding consistency.

Behavior and Defense

This species displays typical Pheidole behavior, workers are active foragers that search for seeds and small prey. Major workers (soldiers) are larger and have proportionally larger heads, they assist with processing hard seeds and defend the nest against intruders. When the nest is disturbed, majors will rush to defend while minors evacuate brood. They are not particularly aggressive toward humans and rarely sting. Their sting is mild and not medically significant. In the outworld, they create foraging trails and can transport food items cooperatively. They are most active during warmer hours of the day. ^[3]

Frequently Asked Questions

References