Stictochironomus pe2

Form described by Langton, 1991

Diagnosis (n=1)
Exuviae 6.8mm long.
Cephalothorax: Cephalic tubercles robust, 125µm long (117j.jpg). Frontal setae 175µm long. 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: Hooks of hook row II 76. 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, with a posterior transverse rugosely tuberculate band, medially broken, with a dark mark at each end (117k.jpg). Vortex present. Comb of segment VIII with 5/7 marginal teeth. Lateral taeniae of segments V-VIII: 3,3,4,4.
Anal segment: Fringe of anal lobe with 41/45 taeniae.

Form keys out at Page 279: Chironomini 176 Stictochironomus of the Text Key.

SW Palaearctic.
(For more information see module IdentifyIt – file: Chironominae).

Ecological notes
Stream: Tunisia.