Rheotanytarsus reissi

Author: Lehmann, 1970

Diagnosis (Material in coll. ZSM)
Exuviae 3.3-3.7mm long (n=3).
Cephalothorax: Frontal apotome smooth. Thoracic horn 388, 440µm long, with setae apically; ThR 8.1, 10.4 (n=2) (135d.jpg). Thoracic horn spinule 11-23µm long (n=3). Pearl row absent.
Abdomen: Tergites II-VII without shagreen. Tergites II-VI with well-developed anterior paired point patches, on II and III strongly transverse, rectangular (135c.jpg). The postero-lateral corner of segment VIII bears a simple, cleft or toothed spur, or three spurs, of which the outermost is the strongest and bent as a hook. Lateral taeniae of segments IV-VIII: 1,3,3,4,4.
Anal segment: Anal lobes with an antero-lateral patch of points. Fringe of anal lobe with 20-24 taeniae (n=3).

Note: Rheotanytarsus procerus Reiss from Morocco appears to have an identical pupal exuviae; further associated material may provide discriminators.

Species keys out at Page 408: Tanytarsini 50 Rheotanytarsus of the Text Key.

Widespread in Europe, circum-Mediterranean.
(For more information see module IdentifyIt – file: Chironominae).

Ecological notes