Nanocladius balticus

Author: (Palmén, 1959)

Diagnosis (n=5)
Exuviae 2.7-3.1mm long (044-2.jpg).
Cephalothorax: Thoracic horn 105-146µm long, small-toothed (044g.jpg); ThR 1.5-1.8.
Abdomen: Hooks of hook row II short, strongly curved, crowded on a postero-median projection of the tergite. Apical point bands present on segments III-V. Tergites III-VIII with restricted shagreen, at least on VII and VIII, with conspicuous large points medially and/or posteriorly. Median point patches restricted to tergites VI and VII, single (044-2.jpg). Points of point patches small, the longest less than 30µm long, usually shorter than the longest tooth of the posterior transverse rows. Pedes spurii B on segment II conspicuously large, usually elongate conical in shape. Three or four lateral setae on segments II-VI, not taeniate; lateral taeniae of segments VII and VIII 1,5.
Anal segment: Anal lobes not drawn out posteriorly into a tooth or spur (044h.jpg). Anal lobe ratio 1.4-1.7. Fringe of anal lobe with 29-35 taeniae. The three anal macrosetae situated apically on the anal lobes.
(Linked adult male: Langton and Pinder, 2003a)

Species keys out at Page 666: Orthocladiinae 78 Nanocladius of the Text Key.

Holarctic species: widespread in Europe, north Africa.
(For more information see module IdentifyIt – file: Orthocladiinae).

Ecological notes
Northern and montane lakes; southern rivers.