Table 4 in Vietnamellidae (Insecta, Ephemeroptera) of Thailand
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Table 4. Comparison of adult characteristics of known Vietnamella species. CharactersV. thani (imago)V. sinensis (imago)Stigmatic area of forewingNot divided by longitudinal veinDivided by longitudinal veinPenesSlender, shallow median cleftSlender, shallow median cleftSubgenital plateConvexSlightly convexHindwing8 or 9 crossveins between Sc and RA12 crossveins between Sc and RA
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2020-12-31
