List of the studied authors
Sars, 1905 (p.375, figs.F,M); Steuer, 1923 (p.9, figs.F,M); Bradford, 1976 (p.187, figs.F,M, Rem.); McKinnon & al., 1992 (p.256, Rem.); Gaughan & Potter, 1995 (tab.1); Bradford-Grieve, 1999 b (p.224, figs.F,M, Rem., figs.187, 195).