Goetghebuer in Goetghebuer and Lindroth, 1931
Body
Medium sized larvae up to 8.5 mm long. A very shallow hump is present on the 11th segment. The L2 setae on the abdomen are forked with 2 - 4 branches Microps lind L2 pict. The posterior parapods bear about 100 simpel claws Microps apposit claws (Klink, 1982a; Wiederholm, 1983).
Head
The headcapsule is pale and the S3 is simpel.
Antenna
The antenna stands on a pronounced pedestal with a small apical spur Mips small spur ant pedestal consists of 5 segments. The basal segment is 240 - 330 µm long. Segment 2 is cylindrical and longer than the remaining segments. The small Lauterborn organs distally on segment 2 with a very long pedestal.
Mentum
The mentum has a crenate median tooth and 5 pairs of lateral teeth Micropsectra mentum. The ventromental plates are close together medially and wider than the mentum.
Labrum
SI is a comb, SII is simpel and labral lamellae a single plate with 22 - 24 apical teeth. The pecten epipharyngis consists of 3 scales with distal teeth. The premandible with 2 teeth Mips labrum pe premandible.
Mandible
The mandible with a dorsal tooth, one apical tooth and 3 inner teeth all brown. The pecten mandibularis is present and seta interna with branches.
Differential characteristics
Distinctive for most species is the small apical spur on the antennal pedestal Mips small spur ant pedestal. M. bidentata with a large projection Mipsbi large distal proj ant p can be separated from Tanytarsus gr. brundini by the larger number of claws and Micropsectra fusca (with a bare pedestal and a distinct hump on the 11 segment) can be separated from Krenopsectra by its much larger size (10 mm vs 5 mm in Krenopsectra).
M. lindrothi can be separated from the other Micropsectra by:
The branched L2 on the abdomen Microps lind L2 pict, labral lamellae with 26 - 32 teeth and the SII simpel.