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Solenopsis molesta — the Thief Ant — measures just 1.5 mm long, making it the smallest ant species available for home cultivation. Watch a complete society function at a scale you've never witnessed before.
Everything you need to establish and maintain a thriving Solenopsis molesta colony.
Solenopsis molesta (Say, 1836)
One of North America's most fascinating ants, Solenopsis molesta earns its "Thief" name by nesting directly alongside larger ant colonies and stealing their food. Workers average just 1.5–2.2 mm in length — smaller than a sesame seed — yet operate with the full complexity of any insect superorganism.
Each colony is collected ethically, packed with care, and shipped for next-day arrival.
Select a starter colony, established colony, or full kit. Every order includes a queen with workers, and comes with our free 24-page care guide.
Orders placed by Sunday ship Monday–Wednesday in insulated, humidity-controlled containers. Live ants are legal to ship across the US (check your state).
Priority overnight shipping is included on all live ant orders. Your colony arrives alive or we reship at no cost — our 48-hour live arrival guarantee.
Transfer your colony to the habitat and begin observing. Our detailed guide walks you through feeding, humidity, temperature, and colony expansion.
Thief Ants are among the easiest species to keep. Here's what they need to thrive.
Maintain 72–82°F (22–28°C) in the nest area. A small heat cable under one side of the habitat creates a natural thermal gradient your ants will self-regulate against.
Keep nest humidity at 50–70% by adding a few drops of distilled water to the nest tube every 2–3 days. The outworld can remain drier at 30–40% RH.
Offer a protein source (small mealworm, egg white) 2× weekly and a sugar source (honey water, fruit) 3× weekly. Remove uneaten food within 24 hours.
Start small — a test tube setup is perfect for founding colonies under 100 workers. Upgrade to a nano farm once you see brood in the tube.
Use a 10× loupe or macro lens attachment to observe workers up close. Red light doesn't disturb them — a red-filter flashlight lets you watch nocturnal activity.
A healthy queen lays 50–100 eggs per week. You'll see white eggs, then larvae, then pupae within weeks. From egg to adult takes roughly 3–4 weeks at optimal temps.
I've kept ants for a decade and thief ants are by far my favorite. At this scale, tunneling behavior becomes something truly extraordinary to watch. The colony arrived healthy and active.
Bought the Founder's Bundle for my 10-year-old. She's obsessed. The care guide is genuinely excellent — clear, detailed, and treats kids like real scientists. Highly recommend.
Colony arrived overnight in perfect condition — every ant alive and the queen already laying. The nano farm is beautiful. Worth every cent. Second purchase, won't be the last.
New colony arrivals, care tips, species spotlights, and exclusive discounts — delivered monthly.