New or interesting Laboulbeniales (Ascomycetes) on Japanese chlaeniine beetles (Coleoptera, Carabidae)

Abstract

Four species of Laboulbenia were isolated from Japanese chlaeniines and are reported. Laboulbenia habui is described as a new species; it is possibly related to L. fasciculata. Laboulbenia habuiis characterized by the proliferation and division of cell V, resulting in the formation of an obliquely superposed series of cells from which short, cylindrical cells arise in a double row, whereas there is a single row of cubical cells in L. fasciculata. Laboulbenia humilis is new for the Japanese mycoflora; antheridia of this fungus were observed for the first time; shape of the perithecial apex, persistent antheridia and the spore size suggest that L. humilis is not closely related to L. exigua and its related taxa. For L. proliferans and L. fasciculata, new chlaeniine hosts are listed and some supplemental notes are given.