Form described by Langton, 1991
Diagnosis
Exuviae 5.8-7.1mm long (n=5).
Cephalothorax: Frontal setae absent. Thoracic horn 530-640µm long, coarsely toothed marginally, unarmed or nearly so between, strongly curved at apex; ThR 8.5-10.2 (n=5). Thorax with a weak tubercular mound mid-dorsally close to suture. All four dorsocentral setae closely approximated.
Abdomen: Armed tergites with a conspicuous brown posterior transverse band or row of large points. Tergites without a median transverse row of strong points. Apical point bands present only on tergite II. Sternite VIII of male armed with a row of strong points on a pair of posterior swellings; of female with these points elevated on strongly projecting flaps (064e.jpg). Lateral setae II-VI 4, small and hair-like, 50-80µm long; Lateral taeniae of segment VII 4, VIII 5.
Anal segment: Anal lobes strongly narrowed in apical half. Anal lobe ratio 2.0-2.4 (n=4). Fringe of anal lobe with 14-26 taeniae (n=6); length taeniae 0.60-0.73x length of lobe (n=4). Anal macrosetae displaced forwards on the anal lobes; length of setae 0.22-0.28x length of lobe (n=3) (064e.jpg).
Form keys out at Page 630: Orthocladiinae 42 Euryhapsis of the Text Key.
Distribution
Turkey and Germany.
(For more information see module IdentifyIt – file: Orthocladiinae).
Ecological notes
Streams.