Labyrinth (1505 Beige) 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

small colony

while bringing you closer to the action while your colonies are feeding

Black Exterior/Beige interior

Small/Medium Species size tunnels and chambers

Labyrinth (1505 Beige) Immediate Shipping Formicaria I would recommend a medium*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 (15ml) Water Towers Removable Vent (Optional) Museum Glass (Optional)