Micropsectra radialis

Author: Goetghebuer, 1939

Exuviae 6.0-7.4mm long (n=8).
Cephalothorax: Cephalic tubercles short conical. Frontal setae 155-238µm long (n=5). Antennal sheath with a shallow rounded swelling. Thoracic horn 810-1075µm long; ThR 5.4-7.7 (n=4). Thoracic horn seta 215-338µm long (n=4), 0.2-0.42x horn length (n=4). Posterior thoracic mound moderately swollen. Pearl row absent.
Abdomen: Length hook row II 0.58-0.68x width tergite; hooks 127-232 (n=6). Armament of tergite II a pair of triangular bands of strong points narrowly joined posteriorly, but anterior to this join the mid-line is free of points (146h.jpg). Armament of tergite III a pair of patches of dense spinules posterior to setae D5. Tergites IV and V with a pair of transverse, slightly oblique point patches, but without spines or spinules. Tergites VII and VIII with very restricted armament or smooth. Pleura unarmed. Pedes spurii B II rounded swollen. Comb of segment VIII 75-113µm wide; with 6-13 marginal teeth (n=8). Lateral taeniae of segments IV-VIII: 1,1,1/2,2/3,5.
Anal segment: Anal lobe ratio 0.96-1.26. Fringe of anal lobe complete, with 35-73 taeniae. (n=8).
(Linked adult male: Langton and Pinder, 2003a)

Species keys out at Page 506: Tanytarsini 147 Micropsectra of the Text Key.

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

Ecological notes