Demicryptochironomus pe1

Form described by Langton, 1991

Diagnosis (n=2, unless stated otherwise)
Exuviae 5.2mm long.
Cephalothorax: Cephalic tubercles short, 15, 22µm long, tending to be pushed into themselves in mounts (098e.jpg). Frontal setae 10µm long. Thoracic horn much branched.
Abdomen: Hook row II entire, length of row 0.49, 0.58x width tergite; hooks 94-124 (n=3). 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. 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 with a patch of short, sturdy points (098f.jpg). 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 40-53 taeniae.

Form keys out at Page 130: Chironomini 27 Demicryptochironomus of the Text Key.

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

Ecological notes