Pseudosmittia ruttneri

Author: Strenzke and Thienemann, 1942

Diagnosis (Material in coll. ZSM)
Exuviae 2.7-3.4mm long (n=10).
Cephalothorax: Thoracic horn absent. Median antepronotal setae 1,2: 13-18(-35); 40-90µm long (n=5); precorneal setae 1-3: 13, 50; 5, 10; 18, 30µm long (n=2); dorsocentral setae 1-4: 8-10; 15, 65; 20/40; 13, 50/68µm long (n=3).
Abdomen: Tergite I armed with small points antero-laterally. Tergites II-VIII, apart from small bare patches, covered with more or less evenly sized points. Armament of tergite VIII may be reduced in front of the posterior transverse point band; in a number specimens there is a transverse point-free band across the third quarter of the tergite (071e.jpg). Sternite I posteriorly extensively armed with spinulate points or unarmed. Conjunctive II/III unarmed dorsally; Conjunctival point bands present dorsally on III/IV- or IV/V-VI/VII and ventrally from III/IV or IV/V-VII/VIII.
Anal segment: Anal lobes without fringe and marginal armament.

Species keys out at Page 836: Orthocladiinae 247 Pseudosmittia of the Text Key.

Palaearctic species: Widespread in Europe.
(For more information see module IdentifyIt – file: Orthocladiinae).

Ecological notes
Northern and montane lakes, streams and rivers.