Endochironomus tendens

Author: (Fabricius, 1775)

Exuviae 7.1-11.6mm long (n=9) (114-1.jpg).
Cephalothorax: Cephalic tubercles small, rounded; frontal setae 25µm long. Thoracic horn much branched. Thorax with a single row of conspicuously large granules near suture (112b.jpg).
Abdomen: Length hook row II 0.38-0.50x width tergite (n=4). Tergite II with median and anterior transverse point patches well-developed. Conjunctives unarmed. Sternite II without transverse spine bands. Vortex absent. Comb of segment VIII with a pad of 6-9 brownish teeth (n=8). Lateral taeniae of segments V-VIII: 0,0(1),2(1),4/5.
Anal segment: Fringe of anal lobe with 87-152/38-95/19-45 taeniae (n=8). Fringe composed of taeniae of two different lengths, the anterior two-thirds of long taeniae, the posterior third of short taeniae. At the posterior end of the anal lobes is a tuft of short broad dark taeniae differing markedly from those of the rest of the fringe (114b.jpg).
(Linked adult male: Langton and Pinder, 2003a)

Species keys out at Page 259: Chironomini 156 Endochironomus of the Text Key.

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

Ecological notes
Stagnant water.