Parakiefferiella bathophila

Author: (Kieffer, 1912)

Exuviae 2.2-3.2mm long (m=2.7mm, n=11).
Cephalothorax: Thoracic horn 60-100µm long (m=87µm, n=9), oval, with small points apically; ThR 1.5-2.2 (m=1.8, n=10) (057g.jpg).
Abdomen: Anterior transverse band weak, the points smaller than those of the central part of the median point patch, often medially interrupted to leave a U-shaped emargination (057h.jpg). Median point patches present on segments II-V. Tergites IV and V with the anterior, median and posterior patches amalgamated to produce a nearly continuous covering of points. Tergites IV-VI without a distinct circular antero-median point patch. Tergite VII without a well-developed median point patch, though it may be represented by minute points. Tergite VII without trace of the posterior transverse band. Pedes spurii B present and usually conspicuous on segment II. Abdominal segments with, at most, four lateral setae, short and straight.
Anal segment: Anal lobe ratio 1.5-2.3 (m=2.0, n=9). Anal lobes without fringe. Apical projections of anal lobes at most a little longer than the distance from their origin to the base of segment IX (057i.jpg). Length of anal macrosetae 0.36-0.5x length of the anal lobe (n=6).
(Linked adult male: Langton and Pinder, 2003a)

Species keys out at Page 748: Orthocladiinae 160 Parakiefferiella of the Text Key.

Holarctic species: widespread in Europe.
(For more information see module IdentifyIt – file: Orthocladiinae).

Ecological notes
Northern and montane lakes; southern streams.