Teratocephalus sp.

The genus Teratocephalus contains a number of species of which three species occur in the Netherlands. It are small bacterial-feeding nematodes with a strongly annulated cuticle and therefore, as genus, easy to recognize. Traditionally nematodes were grouped in Secernentea and Adenophorea. The first group contains the majority of the plant parasites the famous bacterial feeding Caenorhabditis and many other bacterial feeding nematodes. The family Teratocephalidae, with the genus Teratocephalus has long been considered to belong to the Secernentea but is also shows morphological details which suggest a placement in the Adenophorea. With modern molecular techniques is has been shown that Teratocephalus shows more relationships with the Adenophorea and that the whole classification of Nematoda has to be reconsidered.

More pictures of Teratocephalus costatus:

Teratocephalus costatus
Teratocephalus costatus

Teratocephalus costatus: lips, amphids
Teratocephalus costatus: lips, amphids

Teratocephalus costatus: cuticule rings 2um
Teratocephalus costatus: cuticule rings 2um
Teratocephalus costatus: oesophagus
Teratocephalus costatus: oesophagus
Teratocephalus costatus: cuticle, lateral field
Teratocephalus costatus: cuticle, lateral field
Teratocephalus costatus: vulva ingezonken
Teratocephalus costatus: vulva ingezonken
Teratocephalus costatus: anal opening, tail
Teratocephalus costatus: anal opening, tail

(Click on the pictures for an enlargement, © Laboratory of Nematology/Pictures: Hanny van Megen)