Epeorus (Caucasiron) znojkoi, larva: A habitus in dorsal view B habitus in ventral view C habitus in lateral view D head of male in dorsal view E head of female in dorsal view F middle leg in dorsal view G–I abdominal terga J gills VII (in natural position from ventral view) K abdominal sterna II–VI (a, position of oblique stripes b, position of medio-lateral stripes) L–P abdominal sterna, variability in coloration pattern (L Georgia M, O, P Iran N Turkey).