Homaesthesis
Guides
Prionus emarginatus
Prionus emarginatus is a species of long-horned beetle in the family Cerambycidae, found in North America. It belongs to the subgenus Homaesthesis, one of eight species in this poorly known group primarily distributed in the Great Plains and Rocky Mountains. Adults are large, blackish beetles with broad pronota. Males are attracted to prionic acid lures, suggesting females emit this compound as a sex pheromone. The species is nocturnal, with males active at night and attracted to ultraviolet and mercury-vapor lights.
Prionus geminus
Prionus geminus is a longhorned beetle species in the subfamily Prioninae, described in 2016 from material collected in the Great Plains region of North America. It belongs to the subgenus Homaesthesis, a group of grassland-associated Prionus species whose biology remains poorly documented. The species is part of a genus whose larvae are subterranean root feeders, though specific host associations for P. geminus have not been established.