Bryceella perpusilla; very small (body length: 100µm), extremely vivid species; ventral view showing the ciliary field of the head. The identification is based on the apical styli (S) and the vitellarium with 4 nuclei (triangles). The arrowhead points to the caudal antenna.(1)
Bryceella perpusilla; another view of the same specimen with focus on styli and caudal antennae. (1)
Bryceella perpusilla; arrowheads pointing to the 4 nuclei of the vitellarium. (1)
Bryceella perpusilla; focus on the outwardly curved toes, which can be retracted like a telescope into the last pseudosegment of the foot. (1)
Bryceella perpusilla; specimen from (2).
Bryceella perpusilla; lateral view; specimen from (3).
Bryceella perpusilla; trophi (3).
It might be possible that the species identified as Wierzejskiella vagneri (earlier found in nature reserve Schwalm) is also Bryceella perpusilla.