Author: (Edwards, 1932)
Diagnosis
Exuviae 3.2-4.1mm long (m=3.8mm, n=10).
Cephalothorax: Thoracic horn 150-215µm long (m=188µm, n=9); elongate egg-shaped, broadest near base, or elongate oval; minutely spinulate on apical half (054f.jpg). ThR 2.5-3.9 (n=7).
Abdomen: Abdominal armament more neatly arranged in transverse bands, the median band of tergites IV-VII usually not joined to the posterior band. Tergite II with a narrow posterior median projection crowned with a small pad of hooks (054-2.jpg). Tergites IV and V with a broad bare band in front of the median transverse band, not filled with spiculate points. Pedes spurii B on segment II large. Lateral setae of segments VII and VIII long, simple, forked or branched; rarely all simple.
Anal segment: Anal lobes end in a point posteriorly. Anal lobe ratio 1.2-1.8 (m=1.6, n=9). Anal lobes without fringe.
(Linked adult male: Langton and Pinder, 2003a)
Species keys out at Page 726: Orthocladiinae 138 Acamptocladius of the Text Key.
Distribution
NW Europe.
(For more information see module IdentifyIt – file: Orthocladiinae).
Ecological notes
Northern and montane pools and lakes.