Rheocricotopus atripes

Author: (Kieffer, 1913)

Exuviae 3.1-3.9mm long (n=5) (046-1.jpg).
Cephalothorax: Thoracic horn small-toothed; horn 300-350µm long (n=5) (046b.jpg); ThR 4.3-4.4 (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 posteriorly (046d.jpg). Posterior margin of tergite VIII armed with long teeth. Sternites V and VI with a posterior row of strong teeth especially well-developed between setae V5 (043f.jpg). Three or four lateral setae on segments II-VI, not taeniate; lateral taeniae of segment VII 4, VIII 5 (n=6).
Anal segment: Anal lobe ratio 1.7-2.0 (n=3). Fringe of anal lobe with 13-19 taeniae (n=6) (046e.jpg).
(Linked adult male: Langton and Pinder, 2003a)

Species keys out at Page 660: Orthocladiinae 72 Rheocricotopus of the Text Key.

Widespread in Europe, Azores, Canary Islands, circum-Mediterranean.
(For more information see module IdentifyIt – file: Orthocladiinae).

Ecological notes
Streams: larvae in wet moss by a waterfall.