Thienemannimyia northumbrica

Author: (Edwards, 1929)

Exuviae 5.5-6.6mm long (m=5.8mm, n=11).
Cephalothorax: Thoracic horn 300-370µm long (m=334µm, n=9), weakly expanded apically, 3.5-5x as long as broad (m=4.2, n=9) (013l.jpg).
Abdomen: Armament of tergite I spinulate, at least antero-laterally, resembling that of succeeding segments (012g.jpg). Lateral taeniae of segments I-VIII 2,6,6,6,6,6,5,5 (013m.jpg). Fourth lateral taenia of abdominal segments II-VI not smaller and narrower than the rest (013n.jpg). Anterior lateral taenia of segment VII at 0.18-0.29 of length segment VII (m=0.25, n=5). Anterior lateral taenia of segment VIII at 0.47-0.59 of length segment VIII (m=0.54, n=8).
Anal segment: Anal lobe ratio 1.9-2.3 (m=2.1, n=11). Insertion of anterior anal taenia at 0.37-0.51 of lobe length (m=0.41, n=10).
(Linked adult male: Langton and Pinder, 2003a)

Species keys out at Page 45: Tanypodinae 31 Thienemannimyia of the Text Key.

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

Ecological notes
Northern and montane lakes.