Van der Wulp, 1874
Body
Medium to large sized larvae up to 9 mm long. No lateral tubules on the 10th segment (except for Tanytarsus dibranchius). The posterior parapods bear about 15 simpel claws (inTanytarsus gracilentus about 30) Tatars anal claws (Wiederholm, 1983; Moller Pillot and Goddeeris, 2001).
Head
The S3 is simpel (branched in Tanytarsus pallidicornis).
Antenna
The antenna stands on a tall pedestal without or rarely (T. brundini agg.) with a large posterior projection and consists of 5 segments. The basal segment is longer than the flagellum. Segment 2 cylindrical and as long as or longer than the remaining segments. The small Lauterborn organs distally on segment 2 with a very long pedestal than exceeds the apex considerably Tatars antenna.
Mentum
The mentum has a rounded or notched median tooth and 5 pairs of lateral teeth. The ventromental plates are close together medially and a little wider than the mentum Tatars mentum.
Labrum
SI is a comb and labral lamellae a single plate with numerous apical teeth. The pecten epipharyngis consists of 3 smooth plates with distal teeth. The premandible has 3-5 teeth Tatars premandible.
Mandible
The mandible with 1-2 pale dorsal tooth, rarely with 1 or 2 additional dorsal plates (T. gracilentus), apical tooth and 3 inner teeth. The pecten mandibularis is present and seta interna with branches.
Differential characteristics
Tanytarsini with very long pedestals of the Lauterborn organs Tatars antenna are Corynocera, Krenopsectra, Micropsectra, Parapsectra and Tanytarsus . Corynocera has a distinctive mentum. Krenopsectra, Micropsectra and Parapsectra (unknown in P. uliginosa) have much more than about 15 claws on the posterior parapods and most of the described larvae have an apical spur or projection on the antennal pedestal (only present in Species-group Tanytarsus brundini agg.).
Diversity
European species: 57
Treated taxa:
Species-group Tanytarsus brundini agg.
Species-group Tanytarsus buchonius agg.
Species-group Tanytarsus gr. excavatus
Species-group Tanytarsus lestagei agg.
Species-group Tanytarsus gr. mendax
Tanytarsus bathophilus
Tanytarsus debilis
Tanytarsus dibranchius
Tanytarsus ejuncidus
Tanytarsus eminulus
Tanytarsus gracilentus
Tanytarsus mancospinosus
Tanytarsus medius
Tanytarsus pallidicornis
Tanytarsus sylvaticus
Tanytarsus verralli
Tanytarsus volgensis