Aphaenogaster occidentalis, also known as the Western Spindle ant is a subterranean species of ant that resides throughout western North America. They're a species which can be difficult to start, but are fairly easy to keep once they have reaches 20 or so workers. Their colonies grow up to 1000 workers, which they can attain in the span of 3 years. They're a medium sized ant with workers at (4-6mm). They do best with 30-50% humidity and from 24-27 Celsius. We get 3-4 queens of these each year. Have fun with this wonderful species!