Thienemanniella pe2a

Form described by Langton, 1991
(= ? Thienemanniella majuscula (Edwards))

Diagnosis (n=1)
Exuviae about 2.1mm long (035-1.jpg).
Cephalothorax: Thoracic horn absent. Pearl row absent.
Abdomen: Tergites III-VIII armed with points, small on III, larger on IV, thereafter V-VIII much the same size as, or larger than, on IV; on VI and VII points no more than 5µm in length (035-1.jpg). Sternite II without spinules; if armed, then with minute points; posterior points of sternites III-VIII not conspicuously enlarged. Segments III-VIII with 4 lateral taeniae.
Anal segment: Anal lobe ratio 1.6. Fringe of anal lobe with 36+1 taeniae. Apical setae of anal lobes cylindrical, hooked apically (035b.jpg).

Note: Adult male similar to Thienemanniella vittata but with gonocoxite lobe without strong setae.

Form keys out at Page 601: Orthocladiinae 13 Thienemanniella of the Text Key.

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

Ecological notes