Paratanytarsus hyperboreus

Author: Brundin, 1949

Diagnosis (Material in coll. ZSM)
Exuviae 4.1-5.4mm long (n=11).
Cephalothorax: Frontal setae 115-163µm long (n=4). Thoracic horn 438-638µm long (n=7); ThR 9.7-12.2 (n=6). Thoracic horn seta 60-83µm long (n=7); setae from 0.22-0.27x length horn (n=3).
Abdomen: Tergites IV-VI each with a circular or transversely oval point patch (133d.jpg); ArR IV-VI 1.0 : 0.67-1.0 : 0.37-76 (n=12). Armament tergite IV strong, 50-75µm long (n=12). Comb of segment VIII 13-45µm wide (n=7); with 4-7 marginal teeth (n=10). Lateral taeniae of segments III-VIII: 0(1),2/3,2-4,3/4,4,4(5,6).
Anal segment: Fringe of anal lobe with 0-8 taeniae (n=13).

Species keys out at Page 380: Tanytarsini 23 Paratanytarsus of the Text Key.

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

Ecological notes
Northern pools.