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Photinus (beetle)
The rover fireflies (''Photinus'') are a genus of fireflies (family Lampyridae). They are the type genus of tribe Photinini in subfamily Lampyrinae. This genus contains, for example, the common eastern firefly (''P. pyralis''), the state insect of Tennessee.
Male ''Photinus'' beetles emit a flashing light pattern to signal for females. Illegitimate receivers, such as female ''Photuris'' beetles, identify these signals and use them to locate the male ''Photinus'', attract them with deceptive signals, and eat them.
==Systematics==
The closest living relative of the rover fireflies is not yet determined with certainty. In morphology, they resemble their predators, the Photurinae, but they are quite certainly not at all closely related as fireflies go. Rather, the genus ''Ellychnia'' is either the closest relative of ''Photinus'', or might even be included in it. ''Ellychnia'' are notable for having lost the ability to produce light again, and like the ancestors of all fireflies, communicate with pheromones only. It might thus be warranted to remove some species from ''Photinus'' and assign them different genera.〔Stanger-Hall ''et al.'' (2007)〕
The genus ''Pyropyga'' is also a close relative, though it is certainly not as close as ''Ellychnia''. This group makes up the core of the tribe Photinini, and in fact it seems warranted to restrict the tribe to these genera, but more research is still needed, in particular with regard to ''Photinus'' and ''Ellychnia'', as the relationship of their type species (''"Photinus pallens"'' and ''Ellychnia corrusca'') remains completely unknown, with the latter also suspected to be a cryptic species complex. Tropical species of ''Photinus'' are also not well studied.〔
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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