(Edwards, 1932)
Body
Medium sized larvae up to 7 mm long. Body setae dark and conspicuous. The anterior and posterior parapods are separate and bear rows of claws. The procercus is longer than wide with 6-8 anal setae and 2 subapical seta (Wiederholm, 1983).
Head
Antenna
The antenna consists of five segments. Segment 5 longer than segment 4. Segment 3 is annulated. Lauterborn organs as long as segment 3 Pseudokieff antenna.
Mentum
The mentum has one median tooth and 7 - 8 pairs of lateral teeth. Ventromental plates are small Pseudokieff mentum
Labrum
The pecten epipharyngis consists of 5 elongate scales. SI is simpel, the labral lamellae consist of 2 pectinate lobes and the premandible has 5 - 6 apical teeth and a simpel lateral spine (Wiederholm, 1983).
Mandible
The mandible has an apical tooth and 4 inner teeth (3 large and 1 small one). The seta interna with 21 - 28 serrated to plumose branches (Wiederholm, 1983).
Differential characteristics
The annulated 3d antennal segment is characteristic for the subfamily Diamesinae. The conspicuous body setation is distinctive for Pseudokiefferiella.