Paratanytarsus bituberculatus

Author: (Edwards, 1929)

Exuviae 4.2-4.8mm long (n=4) (132-1.jpg).
Cephalothorax: Cephalic tubercles large, domed; frontal setae 133µm long (n=1). Thoracic horn absent. Pearl row extending past wing sheath apex towards nose but stopping short of the latter (132b.jpg).
Abdomen: Lateral longitudinal spine bands may be very reduced in extent. Tergite III with posterior point/spine patches. Tergite IV with a single, broad oval antero-median point patch with posterior spinules or spines; point patch on tergite V single (132c.jpg). Comb of segment VIII 20-35µm wide; with 5-12 marginal teeth (n=5). Lateral taeniae of segments III-VIII: 0(1),2(4),3(4),4(3),4,5.
Anal segment: Fringe of anal lobe with 25-32 taeniae (n=5) (132d.jpg).
(Linked adult male: Langton and Pinder, 2003a)

Species keys out at Page 391: Tanytarsini 34 Paratanytarsus of the Text Key.

Widespread in Europe (not Fennoscandia), circum-Mediterranean.
(For more information see module IdentifyIt – file: Chironominae).

Ecological notes
Stagnant water.