Thienemanniella pe4

new form

Exuviae 2.0-2.2mm long (n=5).
Cephalothorax: Thoracic horn and pearl row absent.
Abdomen: Tergites IV-VIII with anterior points strong. Posterior points on tergites not conspicuously enlarged, points at level posterior adhesion marks small; an apical transverse row of stronger points/hooks may be present on segments III-VII. Sternite II with long spinules more evenly distributed. Four lateral taeniae on segments III-VIII.
Anal segment: Anal lobe ratio 1.3-1.8 (n=5). Anal lobes fringed with 36+1 - 44+1 taeniate setae (n=4). Anal macrosetae cylindrical, hooked at tip.

Species keys out at Page 597: Orthocladiinae 9 Corynoneurella of the Text Key.

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

Ecological notes
Southern rivers.