Solenopsis invicta Species Introduction
Claustral. Single queen, sealed founding chamber, no outside food needed for the first generation. This species is typically pleometrotic, meaning they can cooperate during founding to rear their first workers (nanitics), however all but 1 queen will be killed in the end. Some populations are truly polygynous and the colony can maintain multiple queens into maturity.
Widespread invasive species in the southern US. Was originally introduced at the port of Mobile, AL in the 1940s. In their native habitat, S. invicta are found in subtropical floodplains, which grass lawns mimic in a way, enabling them to outcompete our native fauna there.
Fast-growing, forgiving species that packs a punch when disturbed.
Formicarium
Substrate or hydrostone nests work fine. A secure nest and a fluon barrier for the outworld is recommended for these stinging escape-artists.
Water & Humidity
Fairly humid. S. invicta don't want their nest water-logged, like some species, but they do inhabit very wet climates and should be cared for accordingly.
Recommended to use TrapJaw Labs PVA sponges during founding for improved success rates and more nanitics.
Keep a liquid feeder with water (distilled, purified, or spring) in the foraging area at all times.
Carbohydrates
Carbohydrates are a pretty important part of their diet. Make sure to feed accordingly.
Occasional small honey drop in the outworld is fine.
Can optionally setup a liquid feeder with sugar-water or Ant Nectar Mix.
Protein
Fairly protein-loving. We suggest feeding protein 2 times a week.
TrapJaw Labs feeds our S. invicta colonies with pre-killed D. melanogaster and D. hydei fruit flies as well as pre-killed and cut mealworms. Once the colony is larger, they will take most feeder insects.
Twice per week. Increase amounts to scale with brood development.
Maintenance
Weeks 1: Dark, warm, gently humid, and undisturbed. No food yet.
Weeks 2–4: First workers appear. Start protein 2×/week. Colony will soon kill all but 1 queen, if there's multiple and they're the pleometrotic variety.
Months 2+: Rapidly growing colony. They'll handle a lot of protein and grow accordingly.
Diapause is not required for this species.
Care Summary
- Protein 2×/week
- Sugar via liquid feeder
- Fairly high humidity
- Gradient 75–90°F