Hydrobaenus lapponicus

Author: (Brundin, 1956)

Diagnosis (Material in coll. ZSM)
Cephalothorax: Frontal setae on frontal apotome. Thoracic horn small-toothed, not bifid or strongly jagged at apex.
Abdomen: Dorsal anterior transverse apodeme of segment II colourless medially, giving the appearance of being incomplete. Tergites without a median transverse row of strong points. Tergites III-V between the dorsal setae with more or less evenly distributed small points, which are gradually a little larger posteriorly on each segment. Three or four lateral setae on segments II-VI, not taeniate; VI with 2 to 4 lateral taeniae. At least one lateral seta on segment VII, and all those on segment VIII taeniate.
Anal segment: Genital sheaths of both sexes with an obvious small apical papilla. Taeniae of anal lobe fringe short, fringe stopping far short of the three anal macrosetae.
See Brundin, 1956a; Saether, 1976a.

Species keys out at Page 643: Orthocladiinae 55 Hydrobaenus of the Text Key.

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

Ecological notes
Far northern lakes and pools.