Form described by Langton, 1991
Diagnosis (n=2)
Exuviae 7.2, 7.4mm long.
Cephalothorax: Frontal setae 163, 187µm long. Thoracic horn absent. Precorneal setae 1-3: 110, 115; 140, 190; 145, 180µm long.
Abdomen: Hook row II absent. Apical transverse point bands present on segments III-VII(VIII), the apical bands separated from the posterior band by a point-free space (028c.jpg). Points of the posterior transverse bands smaller than those of the apical bands (028d.jpg). Many lateral setae of the abdominal segments forked or branched. Anterior dorsocentral seta usually simple, rarely bifid.
Anal segment: Anal lobes posterior to three marginal setae with a short, broad triangular projection, which is armed with small points or scales. (028g.jpg ; 028h.jpg).
Form keys out at Page 545: Diamesinae 21 Potthastia of the Text Key.
Distribution
Great Britain.
(For more information see module IdentifyIt – file: Other subfamilies).
Ecological notes
A lake in the far north of Scotland.