These ants come in vials with a hydrostone base to better simulate their founding chambers. Please hydrate the hydrostone accordingly with a pipette. I personally hydrate the base weekly with 2/3 drops of water when kept in my incubator.
 
About Novomessor cockerelli
 
American Species- Harvester Ants

Temperature: Nest 25- 30°C Outworld 24- 35°C

Humidity: Nest 60- 80% Outworld 50- 90%

Hibernation: Yes, From early December to early March at 15°c. 
Ease them into hibernation for a couple of weeks by gently dropping the temps by a couple of degrees every few days so they can prepare. Cutting the food supply will help speed up the preparation.

Diet: Water (at all times). Carbohydrates- like honey water/ sugar water or other. Protein- like fresh-killed insects or other. Seeds are 50% of their diet, like flaxseed, grass seed, rapeseed, chia seed, dandelion seed, and so on.

Colony form: Monogyne (one queen per colony) Average 5,000 workers per colony.

Founding Queen: Claustral (without feeding)

Nest type: Acrylic, Natural setup. Ytong- Should be moved to a new formicarium every 1-2 years as they do so in the wild.
 
Sizes: Approx: Queen- 12-13mm/ Worker- 8- 10mm