Oligoneuriella tuberculata sp. nov., larvae, gills A gill IV under SEM in dorsal view B gill IV under SEM in ventral view C gill plate I in dorsal view D gill plate I in ventral view E gill plate IV in dorsal view F gill plate IV in ventral view G gill plate VII in dorsal view H gill plate VII in ventral view. Scale bars: 0.1 mm (A–H). Same scale bar for C–H.