Micropsectra lacustris

Author: Säwedal, 1975

Diagnosis (after Säwedal, 1975a)
Exuviae about 5.0mm long.
Cephalothorax: Cephalic tubercles long conical (147d.jpg). Thoracic horn 220µm long. Thoracic horn seta 100µm long. Pearl row absent.
Abdomen: Tergite II without anterior point patches; armament with the lateral point bands completely fused anteriorly, leaving a longitudinally oval bare patch postero-medially. Tergite III with spines longer than 25µm. Tergites IV and V with a pair of transverse, slightly oblique point patches. Lateral longitudinal bands of tergites IV and V of spines. Tergites VII and VIII with very restricted armament or smooth. Pedes spurii B II present. Comb of segment VIII with 3 marginal teeth. Lateral taeniae of segments IV-VIII: 2,3,4,4,5.
Anal segment: Fringe of anal lobe complete, with 23 taeniae.

Species keys out at Page 512: Tanytarsini 153 Micropsectra of the Text Key.

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

Ecological notes