Nipponeurorthus spp. a–e Nipponeurorthus punctatus (Nakahara) a–b male genital segments: a lateral b ventral c–e female genital segments: c lateral d gonocoxites 8 and gonapophyses 8, ventral e bursa copulatrix f Nipponeurorthus qinicus Yang in Chen, male holotype, habitus drawing (adapted from Yang in Chen 1998) g–i Nipponeurorthus tianmushanus Yang & Gao, male: g wings h genital segments, lateral i caudal (adapted from Yang and Gao 2001) j–m Nipponeurorthus tinctipennis Nakahara, male: j forewing k–m genital sclerites (adapted from Nakahara 1958). Scale bar: 0.5 mm (a–e).