Cricotopus magus

Author: Hirvenoja, 1973

Diagnosis (n=2, material in coll. ZSM; in part after Hirvenoja, 1973a - in italics)
Exuviae 3.0, 3.6mm long.
Cephalothorax: Cephalic tubercles, frontal setae and thoracic horn absent. Thorax dorsally smooth.
Abdomen: Hook row II with 26, 27 hooks. Pedes spurii B absent. Armament of tergites III-V not extending past the anterior adhesion marks (087j.jpg). Point patches on tergites III-VI, anterior and posterior bands clearly separated, anterior bands kidney- or crescent-shaped. Point patches absent on tergites VII and VIII. Dorsal setae I-VIII: 4,4,4,5,5,5,5,2; Lateral setae I-VIII: 1,3,3,3,3,3,3,4; Ventral setae I-VIII: 2,4,4,4,4,4,4,0; lateral seta 4 on VIII not stronger than the other lateral setae.
Anal segment: Anal lobes without fringe. Anal macrosetae more or less equally strong, 60-70µm long, 0.25, 0.36x lobe length.

Species keys out at Page 945: Orthocladiinae 356 Cricotopus of the Text Key.

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

Ecological notes
Northern streams and lakes.