Paratanytarsus natvigi

Author: (Goetghebuer, 1933)

Exuviae 4.1-6.0mm long (m=5.0, n=11).
Cephalothorax: Cephalic tubercles 20, 28µm long (n=2); frontal setae taeniate, 92-126µm long (n=4). Thoracic horn 122-230µm long (m=181.7µm, n=7); ThR 5.9-9.1 (n=5). Thoracic horn seta 30-42µm long (m=37.1µm, n=7). Posterior thoracic mound without a finger-like projection. Dorsocentral setae simple (rarely one or two forked or branched), the longer of the anterior dorsocentral setae less than 120µm long.
Abdomen: Tergite III with a patch of spines on each side in the posterior half. Tergite IV with a single, broad oval antero-median point patch. Point patches of tergite V paired. Comb of segment VIII 26-48µm wide (m=38.4µm, n=9; with 5-11 marginal teeth (m=7.8, n=11). Lateral taeniae of segments IV-VIII: 2,3,4,4,(4)5.
Anal segment: Anal lobes with lateral margin weakly curved and ending posteriorly in an obtuse angle, the fringe ending at the angle or just internal to it; fringe with 23-32 taeniae (n=9).
(Linked adult male: Langton and Pinder, 2003a)

Species keys out at Page 388: Tanytarsini 31 Paratanytarsus of the Text Key.

Holarctic species: widespread in Europe.
(For more information see module IdentifyIt – file: Chironominae).

Ecological notes
Lakes, pools: fresh- and brackish-water.