TABLE 5 in The species diversity and phylogeny of the genus Siphlonurus Eaton, 1868 from China (Ephemeroptera: Siphlonuridae)

TABLE 5. Identification characteristics of nymphs (Columns 9–13). CharacterColor pattern of abdominal sternaOuter margins of dorsal and ventral lamellae of gills I and IICostal rib of dorsal lamella in gill II shorter or longer than half of anterior marginOuter and posterior margins of gill IIIProximal plate of gill VIISpeciesS. chankaeinverted “U”- shaped markingconcaveshorterconcavewell developedS. davidia pair of fused stripesouter margins of dorsal lamellae straight while those of ventral lamellae concavelongerstraightwell developedS. dongxitwo pairs of spotsstraightlongerstraightwell developedS. immanisinverted “U”- shaped markingconcaveshorterconcavewell developedSpeciesS. lacustrisinverted “U”- shaped markingconcaveshorterconcavewell developedS. orientalisa pair of unfused stripesouter margins of dorsal lamellae straight while those of ventral lamellae concavelongerstraightwell developedS. palaearcticusinverted “U”- shaped markingstraightshorterstraightwell developedS. polyspineusinverted “U”- shaped markingconcaveshorterconcavepoorly developedS. zhelochovtseviinverted “U”- shaped markingconcaveshorterconcavewell developed