Noguchiphaea mattii sp. nov. from southern Vietnam (Odonata: Calopterygidae)

Noguchiphaea mattii sp. nov. (Hon Ba Nature Reserve, 12°23′N, 109°08′E, Khanh Hoa Province, southern Vietnam, leg. 29 iv 2006, to be deposited in Zoology Collection, Hanoi University of Science) is described from the male sex and compared with N. yoshikoae, a species collected for the first time in Vietnam in Tam Dao, Vinh Phuc Province.