Among a large number of insects collected by the authors in 1991, thirteen species under five genera of Laboulbeniales have been obtained from sourthern of Korea; Chitonomyces chinensis on Laccophillus difficilis, (Dytiscidae, Coleoptera), Chitonomyces melanurus on Laccophillus difficilis, (Dytiscidae, Coleoptera), Chitonomyces paradoxus on Laccophillus difficilis, (Dytiscidae, Coleoptera), Dichomyces furcifer on Philonthus amicus (Staphylinidae, Coleoptera), Dichomyces homalotae on Atheta sp. (Staphylinidae, Coleoptera), Laboulbenia acupalpi on Acupalpus inoratus (Carabidae, Coleoptera), Laboulbenia flagellata on Anisodactylus tricuspidatus (Carabidiae, Coleoptera), Laboulbenia proliferans on Chlaenius naeviger (Carabidae, Coleoptera), Laboulbenia tachys on Tachys laetificus (Carabidae, Coleoptera), Laboulbenia vulgaris on Bembidion scopulinum (Carabidae, Coleoptera), Rickia ancylopi on Ancylopus melanocephalus (Endomychidae, Coleoptera), Zodiomyces subseriatus on Helochares lentus (Hydrophilidae, Coleoptera), and Zodiomyces vorticellarius on Helochares lentus (Hydrophilidae, Coleoptera). Among these species, three species and a genus Zodiomyces (L. proliferans, Z. subseriatus and Z. vorticellarius) are newly reported to the flora of southern Korean region.