Parakiefferiella coronata

Author: (Edwards, 1929)

Diagnosis (in part after Tuiskunen, 1986a - in italics)
Exuviae 2.0-2.6mm long (m=2.2mm, n=17) (057-2.jpg).
Cephalothorax: Thoracic horn 60-75µm long (m=69µm, n=17), smooth, oval (057k.jpg); ThR 1.7-2.6 (m=2.2, n=17).
Abdomen: Median point patches present on tergites II-VII; IV-VI without a distinct circular antero-median point patch; VII with a distinct median point patch, smaller than that on VI, but composed of points nearly as large as those on VI. Anterior transverse point band medially widely interrupted on all tergites (057l.jpg). Pedes spurii B present and usually conspicuous on segment II and III; pedes spurii A present on sternites IV-VI. Abdominal segments with, at most, four lateral setae, short and straight.
Anal segment: Anal lobe ratio 2.1-2.7 (m=2.4, n=8). Apical projections of anal lobes at most a little longer than the distance from their origin to the base of segment IX (057m.jpg). Apices of anal lobes at most with vague indications of teeth. Anal lobes without fringe; length of anal macrosetae 0.38-0.57x length of the anal lobe (n=3).
(Linked adult male: Langton and Pinder, 2003a)

Species keys out at Page 745: Orthocladiinae 157 Parakiefferiella of the Text Key.

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

Ecological notes
Northern and montane lakes.