Tanypus kraatzi

Author: (Kieffer, 1912)

Exuviae 5.8-8.3mm long (m=6.9mm, n=16).
Cephalothorax: Thoracic horn 640-900µm long (m=776µm, n=15); ThR 1.47-1.94 (m=1.74, n=14).
Abdomen: No dark mark on segment I. Armament of tergite II of small points, the most posterior points on each side arranged in transverse rows. VIII projecting laterally posteriad by 1.18-1.39 of length segment VIII (m=1.27, n=17), less acutely pointed (004f.jpg). Lateral taeniae restricted to segments VII (6/7) and VIII (5/4).
Anal segment: Anal lobes short, rounded, the margins smooth, shorter than the median length of segment VIII (0.5-0.83:1) (004e.jpg). Anal lobes generally broader than long, lobe ratio 0.88-1.10 (m=0.97, n=17).
(Linked adult male: Langton and Pinder, 2003a)

Species keys out at Page 17: Tanypodinae 3 Tanypus of the Text Key.

Palaearctic species: widespread in Europe.
(For more information see module IdentifyIt – file: Other subfamilies).

Ecological notes
Ditches, ponds and shallow lakes.
Larvae in muddy sediments of slow-flowing or stagnant waters in lowland and secundary mountains (Janecek, 1999a).