Author: (Kieffer, 1921)
Diagnosis
Exuviae 4.6-7.6mm long (m=6.5mm, n=41) (104-2.jpg).
Cephalothorax: Cephalic tubercles conical with the base swollen hemispherically behind (104f.jpg) (apparently swollen anteriorly in preparations where the frontal apotome is flattened out in front of the bases of the antennal sheaths). Thoracic horn much branched.
Abdomen: Hook row II entire, short, length of row 0.24-0.37x width tergite (m=0.31, n=27). Armament of tergites II-VI in the form of an undivided, usually extensive patch of strong points, the points in each segment increasing in size posteriorly. Tergites without long spines posteriorly. The point patches increase in extent from tergite II to V, but on VI the patch is more or less reduced. Sternites I-III with transverse rows of backwardly directed colourless spines (104g.jpg). Comb of segment VIII of 1(2,3) elongate thorn(s) on the postero-lateral edge of the segment. Lateral taeniae of segments V-VIII: 4,4(5),4,5(3,4).
Anal segment: Fringe of anal lobe with 34-74 taeniae (m=58, n=62) (104h.jpg).
(Linked adult male: Langton and Pinder, 2003a)
Species keys out at Page 214: Chironomini 111 Dicrotendipes of the Text Key.
Distribution
Holarctic species: widespread in Europe.
(For more information see module IdentifyIt – file: Chironominae).
Ecological notes
Northern lakes; southern ponds and ditches.