Author: (Edwards, 1929)
Diagnosis (in part after Saether, 1990a - in italics)
Exuviae 1.8-2.1mm long (n=4).
Cephalothorax: Frontal setae on frontal apotome. Ocular field with 1 vertical and 1-2 postorbitals. Thoracic horn reduced to a small tubercle. Precorneal tubercle present, 3 fine and short precorneals. 2 Median and 1 lateral, fine antepronotals. 4 Dorsocentrals, setal marks of setae 2 and 3 separated by 2-13µm, distance between setae 3 and 4 11µm. Thorax and wing sheaths smooth.
Abdomen: Tergite I without shagreen; tergites generally covered with small points, larger anteriorly; II-VIII with posterior transverse rows of translucent or slightly darkened elongate spines. Posterior long spines IV 37-57 (m=48, n=8), VI 27-43 (m=34, n=8). Longest spine IV 33-45µm long (m=39µm, n=8), VI 37-53µm long (m=41µm, n=8). Paratergite IV armed with small points. Pedes spurii Aand B absent. Sternite I without shagreen, II-III usually with a few, weak median points. Lateral setae of segment IV 97-115µm long (m=106µm, n=5). Segment VIII with 5 long lateral setae, strong and slightly taeniate, fourth seta 50-110µm long (n=8) (setae 1-5: 131, 105, 86, 86, 131µm long).
Anal segment: Points on tergite IX much weaker than those on VIII; sternite IX without shagreen. Anal lobes smooth, somewhat rectangular, without fringe. Anal macrosetae long, 0.74-1.0x length anal lobes (m=0.9, n=8), setae thin and apically curved.
(Linked adult male: Langton and Pinder, 2003a)
Species keys out at Page 761: Orthocladiinae 173 Limnophyes of the Text Key.
Distribution
Widespread in Europe (not Scandinavia) to West Bengal (Hazra et al., 1998a)
(For more information see module IdentifyIt – file: Orthocladiinae).
Ecological notes
Streams: larvae in moss in running water.