Tanytarsus tika

Author: (Tourenq, 1975)

Diagnosis (Material in coll. ZSM)
Exuviae 4.0-5.1mm (n=5).
Cephalothorax: Frontal setae 63-80µm long (n=4). Thoracic horn 408-450 (n=3); ThR 16.1 (n=2) (142e.jpg). Posterior thoracic mound swollen. Wing sheaths strongly swollen in apical half and suddenly contracted before the rounded apex, pearl row and nose absent.
Abdomen: Length hook row II 0.33x width tergite; hooks 95, 117 (n=2). Tergites III-VI with paired anterior point patches (139h.jpg). Tergites IV and V with the armament arranged in longitudinal bands. Spine bands on tergite III of a few non-contiguous lightly infuscated spines, situated just in front of setae D3 (142d.jpg). Longest spine III 48-58µm long (n=5). Armament tergite IV strong, 70-120µm long (n=5). ArR III-VI 0.45-0.93 : 1.0 : 0.79-1.1 : 0.54-0.86 (n=5). Dorsal setae of tergites narrow. Comb of segment VIII 55-70µm wide (n=4); with 7-10 marginal teeth (n=5). Lateral taeniae of segments V-VIII: 0,0,0,5.
Anal segment: Anal lobe ratio 1.0, 1.1 (n=2). Fringe of anal lobe with 38-47 taeniae (n=5), forming a complete series.

Species keys out at Page 479: Tanytarsini 120 Tanytarsus of the Text Key.

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

Ecological notes
Fresh and brackish water.