Tanytarsus anderseni

Author: Reiss and Fittkau, 1971

Diagnosis (Material leg. K. Silvester)
Exuviae 3.3-4.2mm long (n=4).
Cephalothorax: Frontal apotome and cephalic tubercles granulate. Thoracic horn 230-290µm long (n=3), broad basally, armed with small spinules or points (138a.jpg); ThR 3.5, 4.8. Thorax antero-laterally armed with strong points. Wing sheaths rounded apically; pearl row absent.
Abdomen: Hook row II absent. Tergites II-V(VI) with a pair of antero-median patches, on IV and V extended posteriorly to produce longitudinal bands; ArR II-VI 0.76 : 0.92 : 1.0 : 0.78-0.92 : 0-0.67 (n=4). Longest spine III 6-8µm, IV 6-10µm long (n=3). Lateral taeniae of segments IV-VIII: 0,0,0,0-3,0-4. Segment VIII with small postero-lateral comb of only a few marginal teeth.
Anal segment: Fringe of anal lobe with 29-35 taeniae (n=4), forming a complete series.
(Linked adult male: Reiss and Fittkau, 1971a)

Species keys out at Page 434: Tanytarsini 75a Tanytarsus of the Text Key.

Holarctic; north-western Europe.
(For more information see module IdentifyIt – file: Chironominae).

Ecological notes