Form described by Langton, 1991
Diagnosis (n=1)
Exuviae 6mm long.
Cephalothorax: Cephalic tubercles and frontal setae absent? Thoracic horn of a few (about 10) branches, branches much shorter than half the length of the abdomen. Thorax with conspicuously large granules near suture (112b.jpg).
Abdomen: Length hook row II 0.67x width tergite; hooks about 100, tending to form a double row (124i.jpg). Tergites II-VI with obvious anterior transverse bands of points stronger than those of the median patch with which they may be confluent for the tergite width. Tergite VII without trace of a median point patch. Three segments with an apical band of points: III, IV and V. Sternite I without two antero-lateral armed humps. Pedes spurii B of segment II absent. Conjunctives with points no larger than those of the anterior transverse bands of the tergites. Vortex present. Comb of segment VIII a brown claw-shaped spur with a long narrow apical tooth, 3/4 small sharp internal teeth and one sharp external tooth (124j.jpg). Segment IV without lateral taeniae; V-VIII with well-developed lateral taeniae, no more than three lateral taeniae on segment V.
Anal segment: Each anal lobe with 29/32 fringe taeniae.
Form keys out at Page 315: Chironomini 212 Polypedilum of the Text Key.
Distribution
Germany.
(For more information see module IdentifyIt – file: Chironominae).
Ecological notes
Grosser Ostersee.