Thoressa varia (Murray, 1875)
• TYPE LOCALITY. Japan.
• SYNONYMS: melancholica Bryk, 1942.
• RANGE. Islands of E. Asia; the record from Korea (Kurentzov, 1970) requires confirmation.
• DISTRIBUTION AND VARIATION. The Sakhalin and Kuril Islands. UPS spots vary in size up to totally absent.
• HABITATS AND BIOLOGY. Forest edges and clearings. Flight period: June-July. Host plant in Japan (Fukuda et al., 1984): Sasa kurilensis.
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