After the publication of the previous papers in 1967, the author became aware of many synonyms or misidentified species through his studies at the British Museum and U.S. National Museum in 1967-68, and also gave some new records. The species in the first chapter should be deleted from the former papers as it has now become clear that they were misidentified and recognized as undescribed species. The synonyms were arranged in the second chapter, and in the third chapter the author enumerated new records of some reared sawflies and their food-plants.
