Formica integra (1 queen)

Species Info:

General: A hardy, ground-nesting species in the Formica genus, Formica integra is widespread across North America and thrives in mixed woodlands, meadows, and forest edges. Known for strong territorial behavior and efficient foraging trails, this species is often observed cooperatively hunting and tending aphids. Queens are moderately sized, and workers show a glossy dark brown to black color, sometimes with faint reddish highlights on the thorax. Colonies defend themselves quickly and display noticeable aggression toward intruders.

Diet: Omnivorous, with a strong preference for sugars and live prey. They accept honey water, sugar solutions, and proteins such as fruit flies, crickets, mealworms, and other small insects. Extra protein drives rapid brood development and larger worker populations, while sugars fuel foraging.

Temperature: Best kept between 70–82°F. They tolerate cooler temperatures well but prefer stable warmth during the main growth season. Activity drops in cold conditions, but they remain resilient in temperate climates.

Diapause: Essential for sustained colony health. They need a 3–4 month winter diapause around 38–45°F, which can be achieved in a refrigerator, wine cooler, or naturally cool area. Gradual cooling and re-warming best simulates seasonal cycles.

Growth: Development from egg to worker typically takes 6–7 weeks at optimal temperatures. Colonies expand steadily, producing several hundred workers within the first 1–2 years. With good care and enough space, they grow into large, vigorous colonies with complex social behaviors and strong defensive responses.