Stictochironomus pictulus

Author: (Meigen, 1830)

Exuviae 7.1-7.9mm long (n=4).
Cephalothorax: Cephalic tubercles somewhat truncate, 80-112µm long (n=3); frontal setae apical, 135-175µm long (n=4) (117g.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 0.64-0.69x width tergite; hooks 71-94 (n=4). 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 6-10 marginal teeth (n=4). Lateral taeniae of segments V-VIII: 3,3,4,4.
Anal segment: Fringe of anal lobe with 35-54 taeniae (n=4).
(Linked adult male: Langton and Pinder, 2003a)

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

Holarctic species: widespread in Europe and circum-Mediterranean.
(For more information see module IdentifyIt – file: Chironominae).

Ecological notes
Lakes and rivers.