Sympotthastia macrocera

Author: Serra-Tosio, 1968

Diagnosis (Material in coll. Serra-Tosio)
Exuviae 6.5-7.2mm long (n=4).
Cephalothorax: Thoracic horn absent. Anterior thoracic setation strong, precorneal setae 1-3: 150-205; 255-300; 120-190µm long (n=4); median antepronotal setae 130-185µm long (n=4); lateral antepronotal setae 150-190µm long (n=3); dorsocentral setae 1-3: 138-150; 50-68; 65-100µm long (n=4). Dorsocentral setae nearly equidistant; distance 1-2:2-3 = 0.77-1.0:1.0 (n=4).
Abdomen: Small points of tergite II much less extensive, spreading at most to the posterior adhesion marks. Most of the lateral setae of the abdominal segments branched.
Anal segment: Anal lobes with three long apical macrosetae and a fringe of short hair-like setae (026c.jpg). Anal lobe ratio 1.2-1.4 (n=4).

Species keys out at Page 530: Diamesinae 6 Sympotthastia of the Text Key.

(W)C Europe.
(For more information see module IdentifyIt – file: Other subfamilies).

Ecological notes
Rivers at low altitudes: southern Massif Central; Bavaria.