males: 25-35 mm, females: 30-45 mm
Variable, mostly gray or gray-brown. Note dark bands usually present on forewing, yellowish hind tibiae. Hind wings are long and narrow (roughly twice as long as wide), pale yellow, sometimes greenish or bluish at base, with dark band relatively narrow to quite narrow and curving around to or almost to the inner angle, and with a spur that reaches about half way to the base.
Feeds on grasses and forbs.