Parakiefferiella nigra

Author: Brundin, 1949

Diagnosis (in part after Tuiskunen, 1986a: p. 187 - in italics)
Exuviae 3.0-3.5mm (n=14).
Colour: Cephalothorax and abdomen uniformly slightly brownish.
Cephalothorax: Antennal sheaths of male normal. Thoracic horn small, 50-75µm long, ovoid, without points on surface; horn less than 3x as long as broad.
Abdomen: Tergite I without points. Anterior transverse point band broken medially, of small points; median point patches present on tergites III-VI, joined laterally to the anterior band; posterior transverse band absent on tergite VII. Sternites and AG of tergite VII with very weak and short points only. Well developed pedes spurii A on sternites V-VII, weak on sternite IV. Pedes spurii B absent or very weakly developed. Abdominal segments with, at most, four lateral setae, short and straight.
Anal segment: 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; anal lobe extensions often distinctly longer than broad.
(Linked adult male: Langton and Pinder, 2003a)

Species keys out at Page 744: Orthocladiinae 156 Parakiefferiella of the Text Key.

Holarctic species: widespread in (northern) Europe (not Mediterranean).
(For more information see module IdentifyIt – file: Orthocladiinae).

Ecological notes
Northern lakes. Favouring bare, oligohumic lakes. In Inarijärvi found to be the first Parakiefferiella to emerge, soon after the melting of the ice.