Graceus ambiguus

Author: Goetghebuer, 1928

(The pupa of the west palaearctic species is unknown. It is tentatively included here on the description of a Nearctic species by Pinder and Reiss in Wiederholm, 1986a.)
Exuviae over 7.0mm long.
Cephalothorax: Cephalic tubercles small, cylindrical; frontal setae small and fine. 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: Tergites II-VI with anterior transverse point bands fused to the median point patches for their whole width; points of anterior points bands not conspicuously stronger. Vortex present.

Species keys out at Page 299: Chironomini 196 Graceus of the Text Key.

northwest Europe.
(For more information see module IdentifyIt – file: Chironominae).