Thoracic-morphology
Guides
Cerophytum
rare click beetles
Cerophytum is a genus of rare click beetles in the family Cerophytidae, established by Latreille in 1809. The genus contains at least four described species distributed across the Holarctic region (Europe, Asia, and North America). Members are characterized by their clicking mechanism, which represents convergent evolution with the true click beetles (Elateridae). A fifth species, Cerophytum lii, was described in 2025 from Yunnan Province, China, representing the first record of the family in that country.
Pselaphus
ant-loving beetles
Pselaphus is a genus of rove beetles (Staphylinidae) in the subfamily Pselaphinae, containing at least 20 described species. These beetles are commonly referred to as "ant-loving beetles" due to their well-documented associations with ants. Members of this genus exhibit highly compact thoracic skeletal structures with reduced sutures and simplified flight musculature, indicating flightlessness in at least some species. The genus has been subject to detailed anatomical study, particularly regarding thoracic morphology and adaptations to myrmecophilous lifestyles.