Cladotanytarsus conversus

Author: (Johannsen, 1932)

Diagnosis (material leg. X.-F. Garcia.)
Exuviae 2.6-3.6mm long (m=3.3mm, n=11).
Colour: Exuviae usually very transparent, sometimes a little infuscated, cephalothorax brownish, abdominal armament and apodemes gold.
Cephalothorax: Cephalic tubercles shallow conical, 20-30µm high (n=7). Frontal setae taeniate, 130-204µm long (m=168µm, n=10). Precorneal setae taeniate, 56-220µm long (n=4). Dorsocentral setae bristle-like, easily fractured, frequently forked from base, 50-114µm (n=6). Thoracic horn apically narrowed to a point, 300-464µm long (m=386µm, n=10); ThR 9.3-13.8 (m=10.7, n=6). Thoracic horn setae taeniate, restricted to the basal three-quarters, mostly along one edge, leaving the tip free of setae (135k.jpg); longest seta near base, 140-196µm long (m=161.1µm, n=10), 0.3-0.5x length of horn (n=6); setae progressively shorter near horn apex. Posterior thoracic mound strongly swollen. Sutural margin with a band of posteriorly directed sharp points medially. Pearl row absent.
Abdomen: Hook row II about half the width of the segment, 97-135 hooks (n=12). Tergites II-VI each with an anterior pair of point patches; ArR II-VI 0.51-0.78 : 0.67-1.03 : 1.0 : 0.76-1.06 : 0.48-0.93 (m=0.62 : 0.87 : 1.0 : 0.98 : 0.71, n=9). Armament tergite IV 60-84µm long (n=9). Sternites I-III finely shagreened. Pedes spurii B II weak. Postero-lateral comb of segment VIII 54-82µm wide (m=68.4µm, n=11); with 6-9 marginal teeth (m=7.9, n=9) and very few dorsal points. Dorsal setae segments I-VIII: 2,3,5,5,5,5,5,1; lateral setae of segments I-IV: 0,3,3,3; lateral taeniae of segments V-VIII: 3,3,4,4/5; ventral setae of segments I-VIII: 1,3,4,4,4,4,4,1, seta of segment VIII taeniate.
Anal segment: Fringe of anal lobe with 21-30 taeniae (m=26.8, n=10).

Species keys out at Page 423: Tanytarsini 65 Cladotanytarsus of the Text Key.

Southern Palaearctic: France, Greece, India to Indonesia.
(For more information see module IdentifyIt – file: Chironominae).

Ecological notes
Rivers and streams. Larvae mainly found in mineral substrata, the guts of mounted specimens are detritus-filled, without diatom frustules.