Adults of the North American species are found in mid-summer, usually in forests near streams or moist seeps. Most individuals have been collected using flight intercept traps. The Australian species has been collected most frequently using pitfall traps in drier, more open savannah or desert.
Nothing is known of immature stages.
The two known species have a remarkable geographical distribution. One species is only found in southwestern Australia. The other species is found in eastern North America. Until 80 years ago, all North American specimens were known from along the East Coast. However, during the last few decades they have been collected progressively farther west, and now are known as far west as Missouri and Kansas.