Psectrocladius obvius

Author: (Walker, 1856)

Exuviae 7.4-7.9mm long (n=3).
Cephalothorax: Thoracic horn 540-650µm long (n=4), small-toothed (047e.jpg); ThR 4.7-10.8 (n=5).
Abdomen: No point patches on tergites III-VI (047f.jpg). 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. Segments II-III with three of four lateral setae; lateral taeniae of segments IV-VIII: 4,4,4,4,5.
Anal segment: Anal lobe ratio 1.6-2.0 (n=3). Fringe of anal lobe with 101-134 taeniae (n=5). Setae of anal lobes dorsal, at least the anterior and posterior displaced well within the bases of the marginal taeniae; the anterior seta situated in the anterior half of the lobe (047d.jpg).
(Linked adult male: Langton and Pinder, 2003a)

Species keys out at Page 662: Orthocladiinae 74 Psectrocladius of the Text Key.

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

Ecological notes
Stagnant and running water.