Melanopsamma aggregata, described on culms ofPhyllostachys bambusoidesin Japan, is transferred to the genusAstrosphaeriella, and a new combination,A. aggregata, is proposed.Phyllostachys heterocyclavar.pubescensandSasa kurilensisare newly recorded as host plants of this species. The species produces aPleurophomopsis-like microconidial state in culture media.