bdelloid rotifers with a ligula in the sulcus The interspace between the trochal discs/ pecicels is called sulcus. In some species there is a more or less triangular ectension: the ligule. Genus Habrotrocha Habrotrocha aspera Habrotrocha aspera Habrotrocha aspera Habrotrocha aspera Habrotrocha ligula Habrotrocha ligula Habrotrocha ligula Habrotrocha ligula         Genus Macrotrachela Macrotrachela aculeata Macrotrachela aculeata Macrotrachela aculeata Macrotrachela aculeata Macrotrachela nana ligulata Macrotrachela nana ligulata Macrotrachela nana ligulata Macrotrachela nana ligulata Macrotrachela quadricornifera ligulata Macrotrachela quadricornifera ligulata Macrotrachela quadricornifera ligulata Macrotrachela quadricornifera ligulata
freshwater life procaryota algae plants protists "worms" molluscs arthropods marine life mediterranean tropical misc impresssum plingfactory