key for bdelloid rotifers, based on conspicuous features (except dental formula) Certain traits which can be easily observed may help to limit the number of possible species in question or may even help to identify them. Here a selection of such traits (with the exception of the trophi which are featured here) is introduced.   spines/ integument extensions Macrotrachela Macrotrachela Dissotrocha Pleuretra corona very wide. CW : HW ≈ 2 Dissotrocha Mniobia Embata Embata         corona very narrow CW : HW ≤ 1 Habrotrocha Habrotrocha Philodinavus Henoceros         head with special features: "auricles" Otostephanos Otostephanos Otostephanos Otostephanos         head with special features: lobes at corona Ceratotrocha Ceratotrocha   Ceratotrocha Ceratotrocha         eyespots in front Rotaria Rotaria Habrotrocha roeperi Adineta         eyespots in middle part (brain) Philodina Habrotrocha collaris Abrochtha Dissotrocha Embata               pills in the trunk Habrotrocha Habrotrocha Otostephanos Scepanotrocha         only 4 nuclei in the vitellarium Scepanotrocha   Scepanotrocha Adineta gracilis         vivipary Rotaria Dissotrocha Philodina gregaria Embata           2 appendages at the foot (except spurs!) Macrotrachela quadricornifera Macrotrachela quadricornifera Macrotrachela quadricornifera Philodina childi                 long foot/ toes/ spurs Rotaria Rotaria Rotaria Dissotrocha conspicuous colors inner organs red inner organsyellow-green orange integument yellow integument         housing/ nest Habrotrocha   Habrotrocha           specific habitat: living inside of Sphagnum cells         Habrotrocha roeperi Habrotrocha reclusa Philodina convergens Scepanotrocha rubra         specific habitat: living in Frullania lobules Habrotrocha annulata Mniobia symbiotica Mniobia scarlatina
freshwater life procaryota algae plants protists "worms" molluscs arthropods marine life mediterranean tropical misc impresssum plingfactory
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