(Goetghebuer in Strenzke, 1941)
Body
Medium sized larvae up to 9 mm long. Living larvae whitish to light yellow-green. The anterior parapods are separate with rows of claws. The two posterior parapods with a few claws. Procercus is absent. The two pairs of anal tubules are very long and about 2-4 x the length of the posterior parapods Georthocl luteic anal segm (Wiederholm, 1983; Moller Pillot, 1984b).
Head
The head length is 0.34-0.40 mm (Moller Pillot, 1984b).
Antenna
The antenna consists of five segments. Segment 4 and 5 are longer than segment 3 The blade is longer than the flagellum. Lauterborn organs are absent.
Mentum
The mentum has one broad median tooth and 4 pairs of lateral teeth. The ventromental plates are weak. The beard is absent Georhtocl luteic mentum.
Labrum
The pecten epipharyngis consists of three subequal scales, SI is weakly serrate and the premandible has one apical tooth and broad basal tooth (Wiederholm, 1983; Moller Pillot, 1984b).
Mandible
The mandible has an apical tooth and 2 inner teeth. The seta interna has plumose branches (Wiederholm, 1983).
Differential characteristics
The very long anal tubules Georthocl luteic anal segm separate Georthocladius from all other Orthocladiinae s.l.