Fireflies
Guides
Bicellonycha
Bicellonycha is a genus of fireflies (Lampyridae) comprising more than 40 described species. Species within this genus exhibit diverse ecological tolerances, with some such as B. lividipennis showing adaptation to artificial night lighting and anthropogenic disturbance, while others including B. wickershamorum face conservation threats and have been petitioned for listing under the U.S. Endangered Species Act. The genus occurs primarily in the Americas, with documented presence in Brazil and the United States.
Lampyrini
glowing fireflies, continuous-light fireflies
Lampyrini is a tribe of fireflies (subfamily Lampyrinae) containing the typical 'glowing' or 'continuous-light' fireflies of the Holarctic region. The tribe includes the type genus Lampyris and formerly recognized Pleotomini, which molecular evidence indicates is a specialized offshoot nested within Lampyrini. Some derived genera, including Paraphausis and Pyrocoelia, have secondarily lost bioluminescent organs and communicate using pheromones instead. The tribe occurs across the Holarctic and includes Andean-endemic lineages such as Pseudolychnuris and Alychnus.
Lucidotini
fireflies, lightning bugs
Lucidotini is the largest tribe of fireflies (Lampyridae), comprising approximately 34 genera and 849 species—nearly one-third of all described firefly species worldwide. The tribe is taxonomically challenging due to overlapping diagnostic features across taxonomic levels and historical reliance on homoplastic morphological characters. Recent phylogenetic studies incorporating terminalia and genital traits have substantially improved genus-level delimitations within the group.