Pheidole spinicornis

Quick Summary

• Difficulty: Medium
• Origin & Habitat: Borneo (Sabah, Malaysia) and Indonesia, tropical rainforests in lowland and hill areas at altitudes 500-1000 m ^[1]. Sympatric with Pheidole quadricuspis and Pheidole quadrensis ^[1].
• Colony Type: Colony structure is unconfirmed. Based on typical Pheidole patterns, likely monogyne (single-queen) colonies, but this has not been directly documented for this species.
• Size & Growth:
  • Queen: Size data unavailable for queens, inferred from Pheidole genus patterns as approximately 6-8 mm.
  • Worker: Minors: 2.7-3.0 mm, Majors: 4.1-4.9 mm in total length ^[1].
  • Colony: Up to several hundred workers, estimated from typical Pheidole colony sizes.
  • Growth: Moderate.
  • Development: Estimated 6-8 weeks at 25-28°C, based on typical Pheidole development. (Development time is species-specific data unavailable, so estimated from genus patterns.)
• Antkeeping:
  • Temperature: Keep at 24-28°C. As a tropical species, they need warm, stable temperatures.
  • Humidity: Keep nest substrate consistently moist but not waterlogged, based on their rainforest habitat.
  • Diapause: No diapause required, tropical species ^[1].
  • Nesting: Prefer nests that maintain moisture, such as Y-tong or plaster nests.
• Behavior: Pheidole spinicornis is a generalist forager. Majors defend the colony and process large food items. Workers are active foragers. Escape risk is moderate due to small size.
• Common Issues: mold growth is a risk due to high humidity needs, ensure good ventilation., temperature drops can stress these tropical ants, keep away from cold areas., majors may have difficulty in narrow passages, use wider tubes in formicariums., overfeeding can lead to mold, remove uneaten food promptly., wild-caught colonies may harbor parasites, quarantine if possible.

Housing and Nest Setup

Pheidole spinicornis does well in several nest types. Y-tong (AAC) nests work well because they hold humidity while providing dark chambers. Plaster nests are another good option as they absorb water. For a naturalistic approach, use a soil-filled formicarium with leaf litter. Keep the nest substrate consistently damp without standing water. A test tube setup can work for founding colonies, but move them to a proper formicarium once the colony reaches 20-30 workers. Ensure all connections are smooth to prevent majors from getting stuck. ^[2]

Feeding and Diet

Pheidole spinicornis is a generalist that accepts protein sources like small crickets, mealworms, and fruit flies twice weekly. Offer sugar sources like honey or sugar water every few days. Seeds are part of their natural diet, so grass seeds or bird seed can be provided. Remove uneaten food after 24-48 hours to prevent mold. Fresh water should always be available. ^[2]

Temperature and Humidity Management

Keep the nest area at 24-28°C using a heating cable if needed. Maintain humidity by keeping the substrate moist and providing a water tube. Balance humidity with ventilation to avoid mold. Watch for condensation, some is good, but excessive moisture can harm the colony. ^[1]

Colony Growth and Development

A newly mated queen lays eggs and feeds the first brood using her reserves. The first workers are smaller but handle basic tasks. Majors appear once the colony reaches around 50 workers. Growth is moderate, and colonies can reach several hundred workers over years.

Handling and Temperament

This species is not highly aggressive but will defend if threatened. Majors can bite but rarely break human skin. Workers are active foragers. Use standard escape prevention like fluon barriers. They coordinate foraging and are interesting to observe. ^[2]

Frequently Asked Questions

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References