The long-legged Aphaenogaster
Aphaenogaster senilis is one of the emblematic ants of the western Mediterranean. Elegant, with very long legs and a black gaster contrasting with its brown-orange thorax, it’s a species found everywhere in scrubland, open pine woods and path edges.
A very active and opportunistic species. It feeds on seeds as readily as on dead or live insects, and moves fast over long distances to bring its find back to the nest.
Aphaenogaster senilis is a perfect species to start with Mediterranean ants: hardy, undemanding, with steady growth and rich behaviours to observe (seed carrying, gallery organisation). No strict hibernation required.
Founding and growth
Semi-claustral founding: the queen must be fed during the first weeks (fruit flies, honeydew). The first workers appear after 6-8 weeks at 25°C.
Fast growth in the first 2 years: 500 to 1,000 workers by age 2, then a plateau around 2,000-5,000 workers in a mature colony. Very observable, ideal for understanding the dynamics of a young colony.
In a Mediterranean climate, A. senilis slows down sharply in winter but doesn’t strictly hibernate. A light diapause at 15-18°C for 2-3 months nonetheless improves its longevity in captivity. Without diapause, the queen wears out faster (12-15 years instead of 18-20).
Keeping
Mediterranean, 22-28°C when active, humidity 50-60%. A winter diapause is advised. A varied diet: insects, seeds, honeydew. Plaster, Ytong or acrylic nest as you prefer. Very visible, very active: ideal for an observation terrarium.
Frequently asked questions
- How big is Aphaenogaster senilis?
- Queen: 8-10 — Workers: 5-8.
- How long does a Aphaenogaster senilis queen live?
- A Aphaenogaster senilis queen lives approximately 15-20.
- How does Aphaenogaster senilis found a colony?
- Foundation type: Semi-claustral — Polygynous: No.
- What does Aphaenogaster senilis eat?
- Diet: Insects, seeds, honeydew.
- Does Aphaenogaster senilis need a diapause (hibernation)?
- Diapause: Light winter diapause.
- What temperature and humidity does Aphaenogaster senilis require?
- Temperature: 22-28 — Humidity: 50-60.
- How large does a Aphaenogaster senilis colony grow?
- Colony size: 2,000-5,000.
- Is Aphaenogaster senilis suitable for beginners?
- Difficulty level: 2/5 (easy).
Sources & references
Authoritative references for further reading on Aphaenogaster senilis:
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