Corynoneura lacustris

Author: Edwards, 1924

Exuviae 1.8-2.5mm long (m=2.2mm, n=15).
Cephalothorax: Frontal setae and dorsocentral setae short and narrow (037f.jpg). Pearl row present.
Abdomen: Tergite armament of minute points. Posterior transverse point rows present on sternites only. Sternite I with the antero-lateral corners armed, the spinules are smaller than those on sternite II (though there may be larger spinules posteriorly). Sternite II with long colourless spinules, 10µm or more long.
Anal segment: Anal lobe ratio 1.3-1.6 (m=1.5, n=13). Anal fringe complete, with 25+1 to 35+1 taeniae (m=29.7, n=16). Apical setae of anal lobes taeniate, anterior apical seta at taeniae 10-16 (m=14, n=16).
(Linked adult male: Langton and Pinder, 2003a)

Species keys out at Page 607: Orthocladiinae 19 Corynoneura of the Text Key.

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

Ecological notes
Montane and northern: usually lakes; sometimes streams.