Stictochironomus sticticus

Author: (Fabricius, 1781)

Exuviae 7.9-8.7mm long (n=4) (118-1.jpg).
Cephalothorax: Cephalic tubercles curved, truncate apically and unarmed, 85-180µm long; 0.7-1.0x higher than broad (n=3); frontal setae 100, 145µm long (n=2) (118b.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 0.57-0.74x width tergite (n=3). Tergites II-VI with anterior transverse point bands separated from the median patches by a bare space, bands not of conspicuously stronger points (118c.jpg). Tergites III and IV with paired apical point patches. Sternite I armed with small points antero-laterally, sporadic small points may occur elsewhere (117o.jpg). Vortex present. Comb of segment VIII with 6-10 contiguous teeth (n=8); comb broad, the lateral teeth usually spreading forwards well beyond the level of the posterior margin of the tergite (118d.jpg). Lateral taeniae of segments V-VIII: 3,3,4,4.
Anal segment: Fringe of anal lobe with 47-58 taeniae (n=5) (118d.jpg).
(Linked adult male: Langton and Pinder, 2003a)

Species keys out at Page 278: Chironomini 175 Stictochironomus of the Text Key.

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

Ecological notes
Northern and montane lakes and rivers.