Tanytarsus multipunctatus

Author: Brundin, 1947

Diagnosis (Material in coll. B. Lindeberg)
Exuviae 5.5-5.9mm long (n=3).
Cephalothorax: Cephalic tubercles rounded. Frontal setae 50-90µm long (n=3). Antennal sheath bases with a small, blunt, conical tubercle. Thoracic horn 600-770µm long; ThR 17.5-30. Thoracic horn with minute spinules from near base to tip, spinule 8µm long. (n=3) Posterior thoracic mound swollen, conspicuous. Wing sheaths rounded apically, pearl row absent.
Abdomen: Hooks of hook row II 92, 100 (n=2). Spine bands of tergite III situated further back on the tergite and overlap setae D5; bands crescent-shaped, curved outwards so that if the line of the spine bases is extended posteriorly it cuts the lateral margin of the segment. Tergites IV and V with the armament arranged in longitudinal bands. Armament tergite IV strong, 325-335µm long (n=3). ArR III-VI 0.57-0.64 :1.0 : 0.22-0.28 : 0.11-0.13. Postero-lateral comb of segment VIII 85-110µm wide; with 8-13 marginal teeth (n=3). Lateral taeniae of segments V-VIII: 0,0,1,5.
Anal segment: Anal lobe ratio 1.2-1.35. (n=3). Fringe of anal lobe with 63-77 taeniae, forming a complete series.
See note under Tanytarsus medius for further distinguishing characters.

Species keys out at Page 487: Tanytarsini 128 Tanytarsus of the Text Key.

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

Ecological notes