The first volume of the "Atlas of Invertebrate-Pathogenic Fungi of Thailand", written by the BIOTEC research team, is part of a continuing series which will illustrate ca. 30 taxa a year of invertebrate-pathogenic fungi of Thailand. It is not an authoritative taxonomic treatment of these fungi. However, the information of each taxon is brought together to give the interested reader some insight into the diversity and distribution of these fungi in Thailand.