Rather than using a web, adult females catch their prey by using a line with one or two sticky drops (a "bolas") which they swing.

Its upper surface was reddish brown, with white hairs and five projections, a long forward-pointing one at the front and four smaller ones behind.

The legs were yellow with brown rings, mostly not fully closed, and were covered with fine white hairs.

Adult females capture prey (usually a male moth) when it approaches by whorling the bolas using a second leg.

There is evidence to suggest that, like related genera, Ordgarius can produce a mimic of the sex pheromone used by a female moth to attract a male.