Author: (Zetterstedt, 1838)
Diagnosis
Exuviae 6.1-11.3mm long (m=9.4mm, n=17) (097-2.jpg).
Cephalothorax: Cephalic tubercles large and curved, 120, 130µm long, 95-170µm wide (n=4) (097f.jpg). Frontal setae 25-45µm long (n=3). Thoracic horn much branched.
Abdomen: Hook row II entire, length of row 0.55-0.72x width tergite (n=6). Tergite II posteriorly with a transverse band of points medially broken by a narrow point-free space; from the posterior band points may spread forwards as diverging marmorate patches (097g.jpg). Tergites III-V with the longitudinal patches more extensive, but always separate posteriorly. Posterior points of tergites II and III colourless. Sternite VIII antero-laterally without armament or with sharp shagreen points. Comb of segment VIII of (0)1-17 short contiguous teeth set on the posterior edge just internal to, or on, the apico-lateral corner. Lateral taeniae of segments V-VIII: 4,4,4,5.
Anal segment: Fringe of anal lobe with 69-136 taeniae (m=106, n=20) (097h.jpg).
(Linked adult male: Langton and Pinder, 2003a)
Species keys out at Page 130: Chironomini 27 Demicryptochironomus of the Text Key.
Distribution
Palaearctic species: widespread in Europe, north Africa.
(For more information see module IdentifyIt – file: Chironominae).
Ecological notes
Lakes.