Stictochironomus maculipennis

Author: (Meigen, 1818)

Exuviae 6.5-10.9mm long (m=9.1mm, n=7).
Cephalothorax: Cephalic tubercles robust, 100-168µm long (m=141µm, n=7), tapering to a pointed apex. Frontal setae short, 55-125µm long (n=4), the same length as, or shorter than, the tubercle (117e.jpg). Thoracic horn very much branched, branches much shorter than half the length of the abdomen. Thorax with conspicuously large granules near suture (112b.jpg).
Abdomen: Length hook row II 0.63-0.80x width tergite (n=6); hooks 71-97 (n=7). Anterior transverse point bands of tergites II-VI separated from the median patches by a bare space, anterior points not conspicuously stronger. At least segments III and IV with an apical band of points which may be medially interrupted. Sternite I with the antero-lateral area point-free and the central area armed with spinulate points (117f.jpg). Vortex present. Comb of segment VIII with 5-10 marginal teeth, sometimes divided. Lateral taeniae of segments V-VIII: 3,3,4,4.
Anal segment: Fringe of anal lobe with 69-116 taeniae (m=83.8, n=7).
(Linked adult male: Langton and Pinder, 2003a)

Species keys out at Page 280: Chironomini 177 Stictochironomus of the Text Key.

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

Ecological notes
Stagnant and running water.