Form described by Langton, 1991
Diagnosis (n=1)
Exuviae 6.2mm long (099-2.jpg).
Colour: Thorax golden brown; abdomen faintly tinged with gold, with the lateral longitudinal stripes, comb of segment VIII and apex of anal lobes darker.
Cephalothorax: Cephalic tubercles about 140µm long, with the apical 50µm narrow cylindrical; frontal setae 50µm long (099i.jpg). Thoracic horn much branched.
Abdomen: Hook row II medially interrupted, length of row 0.16 (0.04 gap) 0.17x width tergite; hooks 25/21 (099j.jpg). 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. The point patches increase in extent from tergite II to V, but on VI the patch is more or less reduced. Conjunctives III/IV and IV/V with a small lateral seta; V/VI and VI/VII unarmed or very weakly armed. Pedes spurii B of segment II conspicuous. Pleura IV unarmed. Comb of segment VIII with a single dark apical tooth. Lateral taeniae of segments V-VIII: 4,4,4,5.
Anal segment: Each anal lobe with 47/52 taeniae (099k.jpg).
Form keys out at Page 141: Chironomini 38 Chironomus of the Text Key.
Distribution
(For more information see module IdentifyIt – file: Chironominae).
Ecological notes
Peat pool by Loch Staing, Sutherland District, Scotland.