Thienemannimyia lentiginosa

Author: (Fries, 1823)

Exuviae 5.7-7.6mm long (m=6.8mm, n=8) (013-1.jpg).
Cephalothorax: Thoracic horn 300-385µm long (m=348µm, n=9), narrow, cylindrical, gently curved to the pointed apex; ThR 7.7-12.0 (m=9.9, n=9) (013b.jpg).
Abdomen: Tergite I granulate/tuberculate, resembling thoracic armament (012h.jpg). Lateral taeniae of segments I-VIII 4,6,6,6,6,6,5,5 (013c.jpg). Lateral taeniae 4-6 of segments II-VI equidistant, the fourth lateral taenia of segments II-VI smaller and narrower than the rest (013g.jpg). Anterior lateral taenia of segment VII at 0.26-0.29 of length segment VII (m=0.28, n=5). Anterior lateral taenia of segment VIII at 0.39-0.48 of length segment VIII (m=0.42, n=8).
Anal segment: Anal lobe ratio 1.9-2.2 (m=2.1, n=9). Insertion of anterior anal taenia at 0.29-0.34 of lobe length (m=0.31, n=8) (013d.jpg).
(Linked adult male: Langton and Pinder, 2003a)

Species keys out at Page 44: Tanypodinae 30 Thienemannimyia of the Text Key.

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

Ecological notes
A stagnant water species of northern lakes.