Krenopsectra fallax

Author: Reiss, 1969

Diagnosis (Material in coll. ZSM)
Exuviae 3.5-4.2mm long (n=7).
Cephalothorax: Cephalic tubercles conical, 13-30µm high (n=4). Frontal setae 123-210µm long (n=3). Antennal sheath base without swelling. Thoracic horn 163-300µm long, bent at right angles at attachment to basal bulb; ThR 2.09-3.59 (n=8). Thoracic horn seta 188-243µm long, 0.70-1.29x horn length (n=7). Posterior thoracic mound moderately swollen. Pearl row absent.
Abdomen: Length hook row II 0.32, 0.33x width tergite (n=2); hooks 70-87 (n=4) (146f.jpg). Tergite II without anterior point patches; tergites IV and V with a pair of transverse, slightly oblique point patches (sometimes narrowly joined medially), frequently grading into spines laterally and posteriorly. Tergites VII and VIII with very restricted armament or smooth. Pedes spurii B II absent. Comb of segment VIII 38-48µm wide (n=4), set on the postero-lateral corner of the segment; comb with 5-7 marginal teeth (n=8). Lateral taeniae of segments IV-VIII: 0,0,0,4,5.
Anal segment: Anal lobe ratio 0.95-1.09 (n=4). Fringe of anal lobe with 11-15 taeniae (n=8); fringe restricted to the posterior half of the lobes.

Species keys out at Page 501: Tanytarsini 142 Krenopsectra of the Text Key.

Widespread in C Europe.
(For more information see module IdentifyIt – file: Chironominae).

Ecological notes
Wet moss in montane springs and burns.