2026 Volume 101 Issue 2 Pages 65-87
The history of studies on the taxonomy of Japanese hypocrealean entomopathogenic fungi is reviewed in each of the following seven periods: (1) research until the introduction of formal research of hypocrealean entomopathogenic fungi by M. Miyoshi (before 1888); (2) progress of Japanese hypocrealean entomopathogenic fungi research after A. Yasuda’s studies on Isaria (1894–1939); (3) research by Y. Kobayashi and D. Shimizu after Kobayashi’s monograph of Cordyceps s.l. and researches during that period (1941–1997); (4) the beginning of taxonomic research based on molecular phylogenetic analysis (2000–2011); (5) taxonomic revision based on “One Fungus = One Name” (2011–2017); (6) further progress in recent taxonomic research (2014–present); and (7) construction of online databases for scientific names (2000–present). We discussed the current status and issues concerning the taxonomy of these fungi in Japan and pointed out the following: there are many new taxa that are thought to be new to Japan which have been included in illustrated books and lists without their scientific names; basic information such as the exact number of species is insufficient; and it is likely that there are still many species whose genus needs to be reexamined and new combinations are needed. Comprehensive taxonomic research covering a wide range of Japanese hypocrealean entomopathogenic fungi is needed.
