Pheromone-attracted
Guides
Prionus heroicus
Heroic prionus
Prionus heroicus is one of the largest long-horned beetles in North America, with males reaching substantial size. The species occurs in oak and pine-juniper woodlands of the southwestern United States and adjacent Mexico, with larvae developing underground as root-feeders. Adults are active during both day and night and are attracted to prionic acid lures, though males typically cannot locate the precise source and instead circle or search nearby. The species exhibits a defensive posture when disturbed, raising its anterior body off the ground.
Prionus spinipennis
Prionus spinipennis is a large long-horned beetle (Cerambycidae: Prioninae) endemic to sand dune habitats of southeastern New Mexico and western Texas. It is one of two Prionus species specialized to this ecosystem, with P. arenarius occupying spring and early summer, while P. spinipennis occurs in late summer and fall. Males are attracted to prionic acid lures, a synthetic analog of female sex pheromones. The species was described by Hovore & Turnbow in 1984.