The seedlike fruit has a pappus of plumose, white or pale tan bristles. He has marked plumose (short, bipectinate) antennae. The plant contains small fruits, frequently including plumose tails. Males are easily recognized by their plumose antennae. They are very light brown to bluish black with large, red eyes and plumose antennae. Antennae filiform, or moniliform, or serrate, or pectinate or bipectinate, or plumose or biplumose. All have tall crownshafts and 4-6 large, plumose, pinnate leaves. There are also bristles present as well as plumose aristae. The same rocks often contain similar aggregates of plumose skeleton crystals of augite. The females emit pheromones, which the male can detect through its large, plumose antennae. The leaflets emerge from the rachis at varying angles creating a stiff, plumose leaf. The females emit pheromones, which the male can detect through his large, plumose (feathery) antennae. The most obvious difference is the plumose antennae. The males also have much bigger plumose (feathery) antennae than the females. Arista plumose (at least basal half).