Micropsectra aristata

Author: Pinder, 1976

Exuviae 4.6-5.7mm long (n=6).
Cephalothorax: Thoracic horn 250-338µm long (n=4); ThR 4.5-6.3 (n=3). Thoracic horn with setae from basal quarter or fifth; seta 215-305µm long (n=3), 0.68-1.2 of horn length (n=4) (147h.jpg). Pearl row absent.
Abdomen: Length hook row II 0.46x width tergite. 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 spinules about 25µm long (147i.jpg). Tergites IV and V with a pair of transverse, slightly oblique point patches and lateral longitudinal bands with scattered short spinules. Tergites VII and VIII with very restricted armament or smooth. Comb of segment VIII 25-48µm wide; with 4-5 marginal teeth (n=4). Lateral taeniae of segments IV-VIII: 3,3,4,4,5.
Anal segment: Anal lobe ratio 1.05-1.2 (n=4). Fringe of anal lobe complete, with 44-51 taeniae (n=5).
(Linked adult male: Langton and Pinder, 2003a)

Species keys out at Page 510: Tanytarsini 151 Micropsectra of the Text Key.

W+C Europe.
(For more information see module IdentifyIt – file: Chironominae).

Ecological notes