Bimodal-activity
Guides
Plionoma
Plionoma is a genus of longhorned beetles (family Cerambycidae) in the tribe Trachyderini, containing three species: P. basalis, P. rubens, and P. suturalis. Members of this genus are notable for their bright coloration, diurnal activity, and strong association with flowers. P. suturalis has been documented feeding on mesquite flowers and exhibits bimodal seasonal activity, with adults appearing in spring, disappearing during summer, and reappearing in fall. The genus occurs primarily in the southwestern United States and northern Mexico, with P. suturalis representing a significant northeastern range extension into Oklahoma.
Plionoma rubens
Plionoma rubens is a species of longhorned beetle in the family Cerambycidae, described by Thomas L. Casey in 1891. It belongs to the tribe Trachyderini, a group known for bright coloration, diurnal activity, and attraction to flowers. The species occurs in the southwestern United States and northern Mexico, with records from Texas west to California. Like other members of its genus, adults are associated with mesquite and other woody legumes.
Plionoma suturalis
Plionoma suturalis is a longhorned beetle in the tribe Trachyderini, characterized by bright coloration and diurnal flower-visiting behavior. The species was described by LeConte in 1858 and occurs from Texas west to California and south into northern Mexico. Its 2013 discovery in northwestern Oklahoma represented a significant northeastern range extension of over 200 miles from the nearest previous records in north-central Texas. Adults exhibit bimodal seasonal activity, appearing in spring, disappearing during summer, and reappearing in fall.