Diamesa pe2

Form described by Langton, 1991

Diagnosis (n=1)
Exuviae 9.5mm long. (This very large exuviae appears to be no more than exceptional in size.)
Colour: Pale to bright golden exuviae, the nearly even gold tinge of the segments with little trace of pattern.
Cephalothorax: Frontal setae 320µm long. Thoracic horn 640µm long; ThR 21. Two precorneal setae only.
Abdomen: Tooth row of tergite II with 15 teeth. Total dorsal teeth 66+. Total ventral teeth 65+. Points of tergite III 9µm long. Reticulation detectable in the antero-lateral corners of segments II-VII, evanescent or absent elsewhere. Usually no trace of armament behind tooth rows II-VII both dorsally and ventrally. Relative length segments IX:VIII:VII = 1.0:1.1:0.74; relative width segments IX:VIII:VII = 1.0:1.7:1.4. Segment VIII 2.3 and segment VII 2.8 times as wide as long. Lateral setae 1-4 of segment III 220; 245; -- 250; (?)µm long.
Anal segment: Anal lobe ratio 1.4. Each anal lobe with 3 macrosetae; length macrosetae 0.7x lobe length.

Note: The pupae of Diamesa bohemani and Diamesa zernyi are apparently very similar. A female pharate adult in ZSM is labelled 'zernyi' and exuviae labelled 'bohemani' cannot be taken to be positively associated, so the slight difference noted between them may have no significance.

Form keys out at Page 571: Diamesinae 47 Diamesa of the Text Key.

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

Ecological notes
Tatra mountains.