Hydrobaenus martini

Author: Saether, 1976

Diagnosis (Material in coll. ZSM)
Exuviae less than 4mm long.
Cephalothorax: Frontal setae on frontal apotome. Thoracic horn less than 300µm long, small-toothed, horn 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: The short taeniae of the anal lobes weak, flexible, inserted in a nearly regular row; fringe continued to the bases of the anal macrosetae. Three anal macrosetae on each anal lobe. Genital sheaths without an apical papilla.
See Saether, 1976a.

Species keys out at Page 645: Orthocladiinae 57 Hydrobaenus of the Text Key.

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

Ecological notes
Swedish Lappland.