Labyrinth (BF)(Bone 3382) 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

Premium Desert Decor and Rock Interior (+20)

Sand-coated chambers giving your ants multiple surfaces for the various stage of development

however later generation workers are much bigger with this species than in the founding stages

original design that is not modular

Labyrinth (BF)(Bone 3382) formicaria I would recommend a mediumThis is a Black Friday Cyber Monday Formicarium ***This product is ready to ship. Ordering this product you will receive the exact formicarium in the photo.*** See the Labyrinth formicarium original product page here. Features: Dimensions 5x7" Nest (125mm x 175mm) and 8x4x4" Foraging Area (200mm x 100mm x 100mm) Decor Per Photos Medium Large Species size tunnels and chambers Water Towers 2 XL Water Towers Removable Vent (Optional) Museum Glass