Comparison of stoma, spicule and gubernaculum of selected species of Acrostichus Rahm 1928 and Diplogastrellus cerea Kiontke and Sudhaus 1996 (modified from the original drawings). (A) A. аustriасus (Fuchs 1938) Massey 1962; (B) A. concolor Massey 1962; (C) A. pterygatus (Timm 1961) Massey 1966; (D) A. taedus Massey 1962; (E) A. rhyncophori Kanzaki et al. 2009 ; (F) A. gubernatus Massey 1974 ; (G) A. nudicapitatus (Steiner 1914) Massey 1962; (H) A. occidentalis (Steiner 1932) Massey 1962; (I) A. halicti Giblin and Kaya 1984; (J) A. megaloptae Kanzaki et al. 2010b; (K) A. puri Kanzaki et al. 2010a; (L) A. primitivus (Gagarin 2002) Sudhaus and Fürst von Lieven 2003; (M) A. superbus (Paesler 1946) Massey 1966; (N) A. dendrophilus (Weingärtner 1955) Massey 1966; (O) A. lazarevskajae (Lazarevskaja, 1964) Sudhaus and Fürst von Lieven 2003; (P) A. stoeckherti Völk 1950; (Q) A. lineatus (Fuchs 1915) Massey 1962; (R) A. consobrinus (