Casita III (Red 108) Immediate Shipping Formicaria I would recommend a medium

I would recommend a medium sized nest for them because the chambers and tunnels for the Pioneer are larger on average than  some of our other nests

White Interior

Check out our "ready-made" (Immediate Shipping Page) Fallen Fortress and Fortress formicarium here

Dark Blue Exterior

Choice of nest designs These are not species specific

Casita III (Red 108) Immediate Shipping Formicaria I would recommend a medium***Casita Type III *** ***This formicarium is the exact one shown in the photos on this product page. Once purchased this product will ship in 2 3 business days.*** Please visit this link for full details on the Casita Type III formicarium. Features: White Sand Interior Red White Sand Desert Stone Natural Medium Large tunnels and chambers 3 levels White Sand Interior 2 Nestmates 2 sides 2 water towers Museum Glass Optional Add On Package Optional