Back to 14 a - Back to content
ROTIFERA, Rotifers.
Key to genera and species of Philippine rotifers.
15 a. Foot and foot opening present (foot often retracted up into the
body on formalin preserved specimens)...........................16
15 b. Foot absent.....................................................28
16 a. Foot with toes..................................................17
16 b. Foot without toes, foot ends in a holdfast or in a circle
of cilia or neither.............................................26
17 a. Lorica present, i.e. cuticle thickened to form a stiff shell
(lorica) which retain its well after preservation...............18
17 b. Lorica absent, i.e. cuticle thin and flexible, not retaining
its shape well after preservation. Semiplanktonic, littoral.
Asplanchnopus...............................................64
18 a. Lorica flattened dorsoventrally or not flattened................19
18 b. Lorica more or less flattened laterally.........................25
to 19 a.
