Fittkau, 1957
Body
Medium sized larvae with a length up to 10 mm. Living larvae are yellowish white. No fringe of swimming hairs.
Head
The head length is 0.75 - 1.0 mm (0.80 - 0.94 mm measured by M. Rieradevall) with a cephalic index of 60 - 65% (Moller Pillot, 1984a).
Antenna
The antennal segments are all yellow and the antennal ratio is 4 - 6. The ring organ is situated at 0.6 - 0.7 of the height of the first segment. The second segment is normal and lacks a tuning fork (Wiederholm, 1983; Moller Pillot, 1984a).
Mentum
Dorsomentum without teeth.
Ligula and paraligula
Ligula with 5 brown teeth in a concave row. Paraligula with a long outer and a smaller inner tooth Thi ligula paraligula.
Mandible
The mandible has a small basal tooth Thi mandible.
Maxilla
The maxilla is short. The b-seta has 2 segments Thi b-seta maxilla9.
Anal tubules
4 anal tubules which are longer than wide.
Posterior parapods
All claws on the posterior parapods are yellow. No teeth on their inner margin.
Differential characteristics
Thienemannimyia is closely related to Arctopelopia, Conchapelopia and Rheopelopia. Their common characters are:
dorsomental teeth absent
concave ligula Thi ligula paraligula
small basal tooth of mandible Thi mandible.
Thienemannimyia differs from the other genera by:
2 segmented b-seta Thi b-seta maxilla9. Conchapelopia and Rheopelopia have b-seta with 3 segments Con b-seta maxilla.
higher antennal ratio (4 - 6) than Conchapelopia and Rheopelopia (3 - 4)
lower cephalic index (60 - 65) than Arctopelopia (65 - 75)
ring organ higher (0.6 - 0.7) than Arctopelopia (0.4 - 0.6)
no brown claw on posterior parapods Rhe post. parapod and not living in rivers (Rheopelopia).
Diversity
European species: 10
Treated species: 0