Rheocricotopus tirolus

Author: Lehmann, 1969

Exuviae 3.5-4.0mm long (n=3).
Cephalothorax: Thoracic horn 275-395µm long; ThR 4.6-7.5 (n=5) (046h.jpg).
Abdomen: Tergites II-VIII with a posterior transverse band of sturdy teeth (046j.jpg); tergite II in addition with a small median pad of hooks (046i.jpg). Postero-lateral corners of segments VII and VIII without dark embedded spines (046j.jpg). Segments III-VII with three strong lateral setae, two close together at, or before, mid-segment, the other well-separated from them in the posterior half of the segment (046i.jpg).
Anal segment: Anal lobes with three long, curved apical setae. Anal lobe ratio 2.3 (n=4); fringe absent (046j.jpg).
(Linked adult male: Langton and Pinder, 2003a)

Note: Closely resembling Rheocricotopus atripes but lacking the taeniate fringe to the anal lobes.

Species keys out at Page 691: Orthocladiinae 103 Rheocricotopus of the Text Key.

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

Ecological notes
Montane streams.