Author: Hirvenoja, 1962
Diagnosis (See also Hirvenoja, 1962c)
Exuviae 3.6-4.2mm long (n=4); usually very transparent, sometimes a little infuscated.
Cephalothorax: Cephalic tubercles short conical (136i.jpg). Frontal setae 72-94µm long (n=3). Thoracic horn short and broad, 70-130µm long (n=4), apically narrowed to a point; ThR 5, 7.2 (n=2). Thoracic horn setae arranged along one edge to the tip (149i.jpg); longest seta 20, 22µm long (n=2). Pearl row absent.
Abdomen: Tergites II-VI each with an anterior pair of point patches; ArR II-VI 0.63-0.80 : 0.88-1.09 : 1.0 : 0.75-1.02 : 0.63-0.97 (n=4). Armament of tergite IV 76-96µm long. The postero-lateral corner of segment VIII bears a comb of teeth 30-50µm wide (n=4); with 4-7 marginal teeth (n=4) and very few dorsal points. Lateral taeniae of segments V-VIII: 3,3,4,5.
Anal segment: Fringe of anal lobe with 28-39 taeniae (n=4).
(Linked adult male: Hirvenoja, 1962c)
Species keys out at Page 426: Tanytarsini 68 Cladotanytarsus of the Text Key.
Distribution
Circum-Baltic.
(For more information see module IdentifyIt – file: Chironominae).
Ecological notes
Northern lakes.