Potanthus flava (Murray, 1875)
• TYPE LOCALITY. Japan.
• SYNONYMS: japonica Mabille, 1883.
• RANGE. S. and E. Asia from the Amur basin to Japan, Thailand and the Philippines.
• DISTRIBUTION AND VARIATION. The S. Ussuri region, populated by the nominate subspecies.
• HABITATS AND BIOLOGY. Forest edges, sea-shore meadows and other open grassy habitats. Flight period: July-August. In Japan (Fukuda et al., 1984), larvae have been recorded on grasses and Iris.
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