Paratanytarsus grimmii

Author: (Schneider, 1885)

Exuviae 2.9-4.0mm long (m=3.5mm, n=24).
Cephalothorax: Thoracic horn absent.
Abdomen: Tergite III with a patch of spines on each side in the posterior half; IV with a single, broad oval antero-median point patch, which may be medially emarginate; point patches of V paired (132i.jpg). Comb of segment VIII 25-45µm wide (m=31.5, n=35); with 4-10 marginal teeth (n=35). Lateral taeniae of segments IV-VIII: 2(3),4(3),4,4,5.
Anal segment: Fringe of anal lobe with 34-45 taeniae (m=41, n=33).

Species keys out at Page 385: Tanytarsini 28 Paratanytarsus of the Text Key.

Distribution (see Langton et al., 1988a).
A complex of parthenogenetic clones of worldwide distribution: widespread in Europe.
(For more information see module IdentifyIt – file: Chironominae).

Ecological notes
Shallow stagnant water. Increasingly a pest of water distribution systems.