Boreoheptagyia legeri

Author: (Goetghebuer, 1933)

Diagnosis (Material in coll. ZSM)
Exuviae 3.2-3.5mm long (n=3).
Cephalothorax: Cephalic tubercles with an apical tooth. Frontal setae absent. Thoracic horn small, brown, triangular (027b.jpg). Thorax dorsally anterior to the level of the thoracic horn usually nearly smooth. Precorneal setae 35; 50; 50µm long (n=1); median antepronotal setae 50µm long (n=1); lateral antepronotal setae 80µm long (n=1); posterior antepronotal setae 50µm long (n=1).
Abdomen: Hook row II absent. Points on the pleura of segment II no longer than those on the tergites; pleura VI-VIII not or scarcely darkened and not tightly pleated. Sternites II-VIII extensively armed with small points.
Anal segment: Anal lobes small, shorter than segment VIII, with three strong, hooked, macrosetae (027c.jpg , 027d.jpg), and a small additional seta, much shorter than 100µm, the others, if discernible, reduced to minute spinules.

Species keys out at Page 535: Diamesinae 11 Boreoheptagyia of the Text Key.

Central Europe to Iberian Peninsula and north Africa.
(For more information see module IdentifyIt – file: Other subfamilies).

Ecological notes
Montane streams and rivers.