Parakiefferiella pe1

Form described by Langton, 1991

Exuviae 3.0-3.7mm long (n=3).
Cephalothorax: Thoracic horn 165-170µm long (n=3), oval, nearly covered with setulae, some of which are knobbed at the tip (057d.jpg); ThR 1.3-1.6 (n=3).
Abdomen: Median point patches are restricted to segments IV and V, not distinctly circular. Lateral setae of abdominal segments short; II-VII with five (057e.jpg); VIII with six.
Anal segment: Anal lobe ratio 2.0-2.3 (n=3). Apical projections of anal lobes at most a little longer than the distance from their origin to the base of segment IX. Apices of anal lobes at most with vague indications of teeth. Anal lobes without fringe (057f.jpg). Length of anal macrosetae 0.42, 0.5x length of the anal lobe (n=2).

Form keys out at Page 742: Orthocladiinae 154 Parakiefferiella of the Text Key.

W Europe.
(For more information see module IdentifyIt – file: Orthocladiinae).

Ecological notes
Streams, rivers and northern lakes.