[Phylum] Cercozoa Cavalier-Smith, 1998 Subphylum Endomyxa T. Cavalier-Smith, 2002 [Order] Aconchulinida de Saedeleer, 1934 [Family] vampyrellids Zopf, 1885 Genus Arachnula Cienkowsky, 1876 Arachnula impatiens Cienkowski