Window Test Tube Array Formicarium Sanded texture 12.7mm (1/2 Inch) 250-500 workers (medium) These founding nests are designed

These founding nests are designed for small colonies which could typically fit in a test tube

Glass vials screw onto 25 mm diameter threaded plastic base

300 - 10000 workers

This species also has supercolonies

Stigmatomma oregonense is very unique

Window Test Tube Array Formicarium Sanded texture 12.7mm (1/2 Inch) 250-500 workers (medium) These founding nests are designedThis is a special edition of Por Armor "Test Tube Array Formicarium. There is a completely unrestricted view to the inside of the port that holds the test tubes in place, removable black out plastic covers, test tube inserts and water refillable. Por Amor added a glass window, made it fixed to 3 tubes only; it's thinner, streamlined the design and can be connected in series side to side, creating an easy to expand array setup. Each tube in your setup