﻿AbstractThe genusConidioboluss.s. (Conidiobolaceae,Entomophthorales) has been delimited to accommodate members that produce microspores. Herein, morphological studies, combined with phylogenetic analysis based on the nuclear large subunit of rDNA (nucLSU), the mitochondrial small subunit of rDNA (mtSSU), and the elongation-factor-like gene (EFL) revealed twoConidioboluss.s. species isolated from plant debris in China.Conidioboluslongiconidiophorussp. nov.is mainly characterised by its long primary conidiophores, whileConidioboluspolysporussp. nov.is diagnosed by 2–3 primary conidia arising from branched primary conidiophores. Phylogenetically, the former is grouped into a separate clade, while the latter is closely related toC.incongruus, but is morphologically distinguished by its larger primary conidia and branched conidiophores.