Citrus psorosis virus (CPsV) was detected from citrus trees for the first time in Japan. The diagnosis was confirmed by molecular, serological, and biological indexing. RT-PCR detected CPsV from two citrus trees among ca. 200 tested. Both trees were variety Shiranui of [Citrus unshiu Marc. 9 C. sinensis (L.) Osb.] 9 C. reticulata Blanco, and neither had the bark scaling symptom typical of CPsV. The CPsV isolate could be genetically related to those from Spain, Italy, Florida, and California.
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