Psectrocladius octomaculatus

Author: Wülker, 1956

Exuviae 4.2-4.9mm long (n=5).
Cephalothorax: Frontal setae present. Thoracic horn 290-390µm long (m=333µm, n=10), small-toothed (049d.jpg); ThR 5.3-6.3 (n=5).
Abdomen: Tergites III-VIII with restricted shagreen, at least on VII and VIII, with conspicuous large points medially and/or posteriorly (049e.jpg). Median point patches present on tergites III-VI(VII); patches double, at least on tergites IV and V, if joined, only by a few scattered points. Points of point patches large, the longest greater than 35µm long, usually obviously exceeding the length of the longest tooth of the posterior transverse rows. Three or four lateral setae on segments II-V, not taeniate; four lateral taeniae or setae present on segment VI; if (rarely) all are reduced to setae, the most posterior is the most conspicuous. At least one lateral seta on segment VII, and all those on segment VIII taeniate.
Anal segment: Anal lobe ratio 1.9-2.2 (n=10). Anal lobes rounded apically, without teeth. Fringe of anal lobe with 25-38 taeniae (m=31, n=11); 3 apical setae on each anal lobe (049f.jpg).
(Linked adult male: Langton and Pinder, 2003a)

Species keys out at Page 681: Orthocladiinae 93 Psectrocladius of the Text Key.

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

Ecological notes
Montane peat pools and seepages.