Given the question: Information:  - The Lampyrinae are a large subfamily of fireflies (Lampyridae). The exact delimitation, and the internal systematics, are a matter of debate; for long this group was used as a "wastebin taxon" to hold any fireflies with insufficiently resolved relationships. Regardless, they are very diverse even as a good monophyletic group, containing flashing and continuous-glow fireflies from the Holarctic and some tropical forms too. The ancestral Lampyrinae probably had no or very primitive light signals; in any case several modern lineages have returned to the pheromone communication of their ancestors independently it seems.  - A pheromone (from Ancient Greek "" "to bear" and hormone, from Ancient Greek "") is a secreted or excreted chemical factor that triggers a social response in members of the same species. Pheromones are chemicals capable of acting outside the body of the secreting individual to impact the behavior of the receiving individuals. There are "alarm pheromones", "food trail pheromones", "sex pheromones", and many others that affect behavior or physiology. Pheromones are used from basic unicellular prokaryotes to complex multicellular eukaryotes. Their use among insects has been particularly well documented. In addition, some vertebrates, plants and ciliates communicate by using pheromones.  - Diaphanes is a genus of firefly in the Lampyrinae subfamily . Species within this genus are : D. citrinus D. exsanguis D. formosus D. guttatus D. lampyroides D. limbatus D. marginella D. mendax D. nubilus D. pectinealis  - The Holarctic is the name for the biogeographic realm that encompasses the majority of habitats found throughout the northern continents of the world, combining Wallace's Palearctic zoogeographical region, consisting of North Africa and all of Eurasia (with the exception of the southern Arabian Peninsula, Southeast Asia, and the Indian subcontinent), and the Nearctic zoogeographical region, consisting of North America north of Southern Mexico. These regions are further subdivided into a variety of ecoregions. Many ecosystems, and the animal and plant communities that depend on them, are found across multiple continents in large portions of this realm. The continuity of these ecosystems results from the shared glacial history of the realm. The floristic Boreal Kingdom corresponds to the Holarctic realm.    Given the paragraphs above, decide what entity has the relation 'parent taxon' with 'lampyridae'.
The answer is:
diaphanes