Krenopsectra nohedensis

Author: Moubayed and Langton, 1996

Exuviae 3.6-4.1mm long (m=3.9mm, n=27).
Cephalothorax: Cephalic tubercles conical, 64-130µm high (m=77.1µm, n=11). Frontal setae 141-240µm long (m=194.5, n=17). Antennal sheath base without swelling. Thoracic horn 384-576µm long (m=474.9µm, n=24), bent at right angles at attachment to basal bulb; ThR 3.3-7.0 (m=4.9, n=21). Thoracic horn seta 304-450µm long (m=406.1µm, n=24). Posterior thoracic mound moderately swollen. Pearl row absent.
Abdomen: Length hook row II 0.31-0.44x width tergite; hooks 73-96 (n=10). Tergite II without anterior point patches; tergites III-V, apart from the smooth median longitudinal band, nearly covered with points. Tergites VII and VIII with very restricted armament or smooth. Pedes spurii B well-developed on segment II. Comb of segment VIII with 4-7 marginal teeth (n=8), set on the postero-lateral corner of the segment. Lateral taeniae of segments V-VIII: 1(0),1(0),4(3),5(4).
Anal segment: Anal lobe ratio 0.95-1.09 (n=4). Fringe of anal lobe with 8-13 taeniae; fringe restricted to the posterior half of the lobes. Only 1 dorsal taenia on the anal lobes.

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

(For more information see module IdentifyIt – file: Chironominae).

Ecological notes
High mountain stream, French Pyrenees.