Author: (Meigen, 1830)
Diagnosis
Exuviae 4.3-4.7mm long (n=3).
Cephalothorax: Thoracic horn small-toothed; horn 283-393µm long; ThR 3.0-5.4 (n=3).
Abdomen: Tergites without a median transverse row of strong points. Tergites III-VIII with restricted shagreen, at least on VII and VIII, with conspicuous large points medially and/or posteriorly. Posterior margin of tergite VIII armed with long teeth. Sternites V and VI with posterior row of teeth weakly developed (043g.jpg). Three or four lateral setae on segments II-VI, not taeniate; lateral taeniae of segment VII 4, VIII 5 (n=3).
Anal segment: Anal lobe ratio 2.0-2.1 (n=4). Fringe of anal lobe with 16-22 taeniae (n=3).
(Linked adult male: Langton and Pinder, 2003a)
Species keys out at Page 660: Orthocladiinae 72 Rheocricotopus of the Text Key.
Distribution
Holarctic species: widespread in (W) Europe (except Scandinavia), circum-Mediterranean.
(For more information see module IdentifyIt – file: Orthocladiinae).
Ecological notes
Streams.