44a. Dorsal bundles entirely lacking (except in a form of Chaetogaster diastrophus). The first 5 segments fused like head, bearing a single pair of ventral bundles (II), the next bundles appearing only in VI. Prostomium more or less rudimentary. Pharynx cylindrical, thick-walled. In mature individuals male pores, penial chaetae, and clitellum in VI.
(Genus Chaetogaster)
Step 45. Genus Chaetogaster
44b. Dorsal bundles present. Prostomium well-developed.
Step 50
51 possible taxa remaining show common names
- Amphichaeta leydigi
- Amphichaeta sannio
- Arcteonais lomondi
- Aulophorus furcatus
- Chaetogaster cristallinus
- Chaetogaster diaphanus
- Chaetogaster diastrophus
- Chaetogaster langi
- Chaetogaster limnaei
- Chaetogaster setosus
- Dero digitata
- Dero dorsalis
- Dero nivea
- Dero obtusa
- Haemonais waldvogeli
- Homochaeta naidina
- Homochaeta setosa
- Nais alpina
- Nais barbata
- Nais behningi
- Nais bretscheri
- Nais christinae
- Nais communis
- Nais elinguis
- Nais pardalis
- Nais pseudobtusa
- Nais simplex
- Nais stolci
- Nais variabilis
- Ophidonais serpentina
- Paranais botniensis
- Paranais frici
- Paranais litoralis
- Piguetiella blanci
- Pristina aequiseta
- Pristina longiseta
- Pristinella amphibiotica
- Pristinella bilobata
- Pristinella jenkinae
- Pristinella menoni
- Pristinella notopora
- Pristinella osborni
- Pristinella rosea
- Ripistes parasita
- Slavina appendiculata
- Specaria josinae
- Stylaria lacustris
- Uncinais uncinata
- Vejdovskyella comata
- Vejdovskyella intermedia
- Vejdovskyella macrochaeta
Decision path