Nylanderia incallida

Quick Summary

• Difficulty: Expert
• Origin & Habitat: West Africa, found in Equatorial Guinea, Ghana, Guinea, Ivory Coast, and São Tomé & Príncipe. Inhabits savanna habitats, as documented in the Lamto Scientific Reserve in Côte d'Ivoire ^[3][2].
• Colony Type: Unknown, colony structure has not been documented. The queen caste remains unknown, so it is unclear whether this species is single-queen or multi-queen.
• Size & Growth:
  • Queen: Unknown, queen caste has not been described ^[1]
  • Worker: 2.5-2.7 mm ^[1]
  • Colony: Unknown, no colony size data available
  • Growth: Unknown
  • Development: Unknown, development has not been studied (No direct data exists on development timeline)
• Antkeeping:
  • Temperature: Temperature needs are unclear, start around 24-28°C and observe, based on tropical West African origin
  • Humidity: Keep nest substrate consistently moist but not waterlogged, with a humidity gradient
  • Diapause: No, tropical species from a region with minimal seasonal variation do not require diapause
  • Nesting: Use test tube setups or small nests made of Y-tong, plaster, or 3D-printed materials. Workers are tiny, so chambers should be appropriately scaled
• Behavior: Workers are active generalists ^[3]. Their tiny size makes them excellent escape artists, fine mesh barriers are essential. Temperament is likely skittish rather than aggressive.
• Common Issues: queen identification is nearly impossible since the queen caste remains unknown, tiny size means escape prevention must be excellent, they can squeeze through standard barriers, no colony size data makes it difficult to plan housing for growth, lack of biological data means keepers must rely on genus-level assumptions, wild-caught colonies may be misidentified, this species is easily confused with Nylanderia luteafra

Identification and Distinction

Nylanderia incallida workers measure 2.5-2.7 mm in total length, making them quite small ^[1]. The most distinctive feature is the faint dorsal bands of lighter yellowish-brown along the segmental lines of the gaster ^[1]. This marking helps separate this species from the similar Nylanderia luteafra, which lacks these bands ^[1]. Workers are overall yellowish-brown with lighter antennae and legs, and the cuticle is mostly smooth with faint rugulose texture on the head, metanotal area, and mesopleuron ^[1]. Accurate identification is challenging since the queen caste remains unknown.

Natural Habitat and Distribution

This species is native to West Africa, with records from Equatorial Guinea, Ghana, Guinea, Ivory Coast, and São Tomé & Príncipe ^[2][1]. It has been collected in savanna habitats, such as the Lamto Scientific Reserve in Côte d'Ivoire, where it is classified as a generalist functional group ^[3]. This suggests tolerance for seasonal moisture variation and warm temperatures.

Care Challenges and Limitations

Nylanderia incallida presents significant challenges due to the lack of biological data. The queen and male castes are unknown, so species confirmation from queens is impossible ^[1]. Colony structure, founding behavior, development timeline, and colony size limits are all undocumented. This makes it an expert-only species. The tiny worker size also creates practical challenges for housing and escape prevention.

General Care Approach

Care should be based on related Nylanderia patterns and the species' West African origin. Keep colonies warm around 24-28°C with a humidity gradient. Use test tube setups or small nests made of Y-tong, plaster, or 3D-printed materials. As generalists, they accept varied foods like sugar water and small insects ^[3]. Escape prevention is critical due to their tiny size, use fine mesh barriers.

Frequently Asked Questions

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References