Formica oreas - Canada Ant Colony

Formica oreas (Oreo Mound Ant)

Canada Ant Colony
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Formica oreas, affectionately known as "oreos", are one of the coolest ants in Canada. They are large ants in large colonies, and build mounds of up to 10 feet wide (depending on species, many of them stop at around 2-3 feet wide). These mounds are made to regulate temperature and often thatched with local grasses and pine needles. 

Remarkably, many of these species line their nests with tree resins, which when mixed with the Formic acid they secrete, creates an antibiotic to protect them disease.

Formica oreas are one of the largest variety of Formica which live in  Canada. These are some of the largest of Formica with queens from 10-13 mm and workers from 6-8 mm. Mature colonies will accept new queens, becoming polygynous and allowing them to grow extremely large colonies up to 100,000 workers in 10+ years. They prefer 22-26 Celsius and like around 50% humidity, though there is slight variation across species. They're more skittish than most ants, and so are of medium difficulty to start, but are extremely enthusiastic and fast growing once they break 50 workers. In the wild, Formica oreas are the most dominant ants in their area, hunting down other species and consuming large amounts of biomass. We get many of these each year, though the numbers are variable. Note that this species requires good ventilation, or their formic acid spray may become an issue.

This product includes Formica planipilis, Formica obscuriventris, Formica prociliata, Formica dakotensis, Formica integra, Formica fossaceps, and several other Formica species in the rufa-group,

**Note: F. oreas colonies here were caught as small wild caught colonies unless stated otherwise

***We offer polygynous colonies of this species, which can be bought on special request.

Test tube inserts are upgrades to the test tube setups provided. If purchased, they come with a dark hood to lower light levels for the colony, an insert which provides a living space, and a feeding insert to provide food for the colony.

Ungrouted inserts are a blank plastic insert which helps provide a more suitable space for the ants to grip (as opposed to glass tubes), while grouted inserts are bedded with a substrate which helps distribute humidity more evenly throughout the test tube, and helps certain ants create their cocoons more easily. Overall, grouted inserts are more comfortable for the ants.

You will NOT need an insert for colonies in test tubes, but it does help for certain species. IF you are moving the ants into a nest immediately, do NOT get a test tube insert.

Hey! This is a live product. If you are purchasing ants during the winter months, please remember to purchase the "Winter Shipping (Live Guarantee) (72 hour heat pack + 1 inch foam cushion)" in order to guarantee the order.

Just a warning, we will NOT ship live ants into the US unless the receiver has a permit. If such an order is made, it will be refunded, minus a 10% processing fee and restocking fee

This product is from Canada Ant Colony. The full catalogue, including all variants, can be found at

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