Reiss, 1968
Body
Small larvae up to 4 mm long. The posterior parapods bear about 15 simpel claws (Wiederholm, 1983).
Head
The S3 is simpel.
Antenna
The antenna stands on a small pedestal without projections and consists of 5 segments. The basal segment is shorter than the flagellum. Segment 2 is somewhat wedge-shaped, sometimes unsclerotized distally and about as long as the third segment. The medium Lauterborn organs distally on segment 2 with a pedestal just reaching the apex Neozavr bern antenna.
Mentum
The mentum has a simpel median tooth and 5 pairs of lateral teeth. The fifth lateral is very small and hidden behind the 4th lateral. The ventromental plates are close together medially and wider than the mentum Neozavrelia mentum.
Labrum
SI is a comb Neozavrelia S1 S2 and labral lamellae a single plate with numerous apical teeth. The pecten epipharyngis consists of 3 smooth plates with distal teeth. The premandible has 2 apical teeth Neozavrelia premandible.
Mandible
The mandible with a dorsal tooth, apical tooth and 2 inner teeth Neozavrelia mandible. The pecten mandibularis is present and seta interna with branches.
Differential characteristics
Neozavrelia and Rheotanytarsus share the smooth antennal pedestal, Lauterborn organs might just reach the antennal apex Neozavrelia antenna. Rheotanytarsus however has a distinctive case in which it constructs a web for filtering Rheotanytarsus case. Also Neozevralia has a pecten epipharyngis with 3 plates Neozavr pecten epipharyngis while these plates are fused in Rheotanytarsus Rheotan pecten epipharyngis.
N. bernensis can be separated from N. luteola agg. by the large lauterborn organs reaching the apex of the 4th antennal segment Neozavrelia antenna.