Tanytarsus pe19

Form described by Langton, 1991

Diagnosis (n=2, unless stated otherwise)
Exuviae 4.0, 4.7mm long.
Cephalothorax: Cephalic tubercles long conical (142l.jpg). Frontal setae 115, 175µm long. Antennal sheath base with a small tubercle. Thoracic horn 760, 880µm long; ThR 8.0, 8.2. Thoracic horn apex densely covered with short setulae, medially with long setae, as long as the horn is broad (142m.jpg). Posterior thoracic mound weak. Wing sheaths rounded apically, pearl row absent.
Abdomen: Hooks of hook row II 71, 78. Tergite II without an anterior pair of point patches; III with points only; IV and V with the armament arranged in longitudinal bands. Armament tergite IV strong, 80, 100µm long. ArR III-VI 0.63/0.7 : 1.0 : 0.85/1.0 : 0.75/0.45. Postero-lateral comb of segment VIII 35, 53µm wide; with 6-10 marginal teeth. Lateral taeniae of segments V-VIII: 0,1,3,5.
Anal segment: Anal lobe ratio 1.46 (n=1). Fringe of anal lobe with 33-44 taeniae, forming a complete series.

Form keys out at Page 473: Tanytarsini 114 Tanytarsus of the Text Key.

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

Ecological notes